EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr A3 16535 11693
encoding utf-8
Sheet 1 1
Title "c3lingo interpeter unit"
Date "2020-12-06"
Rev "v0.2"
Comp "Jannik Beyerstedt"
Comment1 "Prototyping Modules Rev2"
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L Connector:XLR3_Ground J2
U 1 1 5F81A769
P 900 1900
F 0 "J2" H 900 2265 50  0000 C CNN
F 1 "Mic 1" H 900 2174 50  0000 C CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical" H 900 1900 50  0001 C CNN
F 3 "https://www.neutrik.com/de/produkt/nc3fd-lx.pdf" H 900 1900 50  0001 C CNN
F 4 "XLR (female)" H 900 1900 50  0001 C CNN "Model"
	1    900  1900
	1    0    0    -1  
$EndComp
$Comp
L Connector:XLR3_AudioJack3_Combo_Ground J4
U 2 1 5F81B01C
P 850 8850
F 0 "J4" H 850 9215 50  0000 C CNN
F 1 "Stage Line-In" H 850 9124 50  0000 C CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical" H 850 8850 50  0001 C CNN
F 3 "https://www.neutrik.com/de/produkt/ncj6fa-h.pdf" H 850 8850 50  0001 C CNN
F 4 "Combo XLR + 6.3 mm Jack" H 850 8850 50  0001 C CNN "Model"
	2    850  8850
	1    0    0    -1  
$EndComp
$Comp
L Connector:AudioJack3_Ground J1
U 1 1 5F821533
P 15750 1950
F 0 "J1" H 15750 2300 50  0000 R CNN
F 1 "Headphone 1" H 15950 2200 50  0000 R CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical" H 15750 1950 50  0001 C CNN
F 3 "https://www.neutrik.com/de/produkt/nj3fp6c.pdf" H 15750 1950 50  0001 C CNN
F 4 "6.3 mm Jack (female)" H 15750 1950 50  0001 C CNN "Model"
	1    15750 1950
	-1   0    0    -1  
$EndComp
$Comp
L power:GND #PWR08
U 1 1 5F830544
P 700 2300
F 0 "#PWR08" H 700 2050 50  0001 C CNN
F 1 "GND" H 705 2127 50  0000 C CNN
F 2 "" H 700 2300 50  0001 C CNN
F 3 "" H 700 2300 50  0001 C CNN
	1    700  2300
	1    0    0    -1  
$EndComp
$Comp
L Device:R R1
U 1 1 5F83A5E0
P 3050 1500
F 0 "R1" V 2843 1500 50  0000 C CNN
F 1 "1K 1%" V 2934 1500 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 2980 1500 50  0001 C CNN
F 3 "~" H 3050 1500 50  0001 C CNN
	1    3050 1500
	0    1    1    0   
$EndComp
$Comp
L Device:R R6
U 1 1 5F83C638
P 5650 2000
F 0 "R6" V 5443 2000 50  0000 C CNN
F 1 "1.5K" V 5534 2000 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 5580 2000 50  0001 C CNN
F 3 "~" H 5650 2000 50  0001 C CNN
	1    5650 2000
	0    1    1    0   
$EndComp
$Comp
L Device:R R11
U 1 1 5F83D91E
P 4100 2500
F 0 "R11" V 3893 2500 50  0000 C CNN
F 1 "330K 1%" V 3984 2500 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 4030 2500 50  0001 C CNN
F 3 "~" H 4100 2500 50  0001 C CNN
	1    4100 2500
	0    1    1    0   
$EndComp
$Comp
L Device:R R5
U 1 1 5F83F337
P 2900 2000
F 0 "R5" H 2970 2046 50  0000 L CNN
F 1 "27K 1%" H 2970 1955 50  0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 2830 2000 50  0001 C CNN
F 3 "~" H 2900 2000 50  0001 C CNN
	1    2900 2000
	1    0    0    -1  
$EndComp
$Comp
L power:+15V #PWR01
U 1 1 5F84163B
P 3300 3000
F 0 "#PWR01" H 3300 2850 50  0001 C CNN
F 1 "+15V" H 3315 3173 50  0000 C CNN
F 2 "" H 3300 3000 50  0001 C CNN
F 3 "" H 3300 3000 50  0001 C CNN
	1    3300 3000
	1    0    0    -1  
$EndComp
$Comp
L Device:R R2
U 1 1 5F84960A
P 4100 1500
F 0 "R2" V 3893 1500 50  0000 C CNN
F 1 "330K 1%" V 3984 1500 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 4030 1500 50  0001 C CNN
F 3 "~" H 4100 1500 50  0001 C CNN
	1    4100 1500
	0    1    1    0   
$EndComp
Wire Wire Line
	3950 2000 4500 2000
Wire Wire Line
	4500 2000 4500 1500
Wire Wire Line
	4500 1500 4250 1500
Wire Wire Line
	3950 1500 3300 1500
Wire Wire Line
	3950 2500 3300 2500
Wire Wire Line
	2900 1850 2900 1800
Wire Wire Line
	2900 1800 3300 1800
Wire Wire Line
	3300 1800 3300 1900
Wire Wire Line
	3300 1900 3350 1900
Wire Wire Line
	3350 2100 3300 2100
Wire Wire Line
	3300 2100 3300 2200
Wire Wire Line
	3300 2200 2900 2200
Wire Wire Line
	2900 2200 2900 2150
Wire Wire Line
	3300 1800 3300 1500
Connection ~ 3300 1800
Connection ~ 3300 1500
Wire Wire Line
	3300 1500 3200 1500
Wire Wire Line
	3300 2200 3300 2500
Connection ~ 3300 2200
Connection ~ 3300 2500
Wire Wire Line
	3300 2500 3200 2500
Wire Wire Line
	4250 2500 4500 2500
Wire Wire Line
	4500 2500 4500 2600
Wire Wire Line
	3550 3000 3700 3000
$Comp
L Device:CP C9
U 1 1 5F8514CB
P 4150 3300
F 0 "C9" V 3895 3300 50  0000 C CNN
F 1 "100uF" V 3986 3300 50  0000 C CNN
F 2 "Capacitor_THT:CP_Radial_D10.0mm_P5.00mm" H 4188 3150 50  0001 C CNN
F 3 "~" H 4150 3300 50  0001 C CNN
F 4 "25V" H 4150 3300 50  0001 C CNN "Model"
	1    4150 3300
	0    -1   1    0   
$EndComp
$Comp
L Device:C C8
U 1 1 5F8504A1
P 3850 3000
F 0 "C8" V 3598 3000 50  0000 C CNN
F 1 "100nF" V 3689 3000 50  0000 C CNN
F 2 "Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm" H 3888 2850 50  0001 C CNN
F 3 "~" H 3850 3000 50  0001 C CNN
	1    3850 3000
	0    -1   1    0   
$EndComp
$Comp
L power:GND #PWR012
U 1 1 5F84F240
P 4600 3200
F 0 "#PWR012" H 4600 2950 50  0001 C CNN
F 1 "GND" H 4605 3027 50  0000 C CNN
F 2 "" H 4600 3200 50  0001 C CNN
F 3 "" H 4600 3200 50  0001 C CNN
	1    4600 3200
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR09
U 1 1 5F84E5EB
P 4500 2600
F 0 "#PWR09" H 4500 2350 50  0001 C CNN
F 1 "GND" H 4505 2427 50  0000 C CNN
F 2 "" H 4500 2600 50  0001 C CNN
F 3 "" H 4500 2600 50  0001 C CNN
	1    4500 2600
	1    0    0    -1  
$EndComp
$Comp
L power:-15V #PWR011
U 1 1 5F842347
P 3300 800
F 0 "#PWR011" H 3300 900 50  0001 C CNN
F 1 "-15V" H 3315 973 50  0000 C CNN
F 2 "" H 3300 800 50  0001 C CNN
F 3 "" H 3300 800 50  0001 C CNN
	1    3300 800 
	1    0    0    -1  
$EndComp
$Comp
L Device:C C2
U 1 1 5F862FE2
P 3850 1100
F 0 "C2" V 3598 1100 50  0000 C CNN
F 1 "100nF" V 3689 1100 50  0000 C CNN
F 2 "Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm" H 3888 950 50  0001 C CNN
F 3 "~" H 3850 1100 50  0001 C CNN
	1    3850 1100
	0    1    1    0   
$EndComp
$Comp
L power:GND #PWR04
U 1 1 5F8640B0
P 4600 1000
F 0 "#PWR04" H 4600 750 50  0001 C CNN
F 1 "GND" H 4605 827 50  0000 C CNN
F 2 "" H 4600 1000 50  0001 C CNN
F 3 "" H 4600 1000 50  0001 C CNN
	1    4600 1000
	1    0    0    -1  
$EndComp
$Comp
L Device:CP C6
U 1 1 5F864500
P 4750 2000
F 0 "C6" V 5005 2000 50  0000 C CNN
F 1 "1uF" V 4914 2000 50  0000 C CNN
F 2 "Capacitor_THT:CP_Radial_D5.0mm_P2.00mm" H 4788 1850 50  0001 C CNN
F 3 "~" H 4750 2000 50  0001 C CNN
F 4 "16V low ESR electrolytic // plastic film" H 4750 2000 50  0001 C CNN "Model"
	1    4750 2000
	0    -1   -1   0   
$EndComp
$Comp
L Device:R R7
U 1 1 5F86655E
P 5000 2250
F 0 "R7" H 4930 2204 50  0000 R CNN
F 1 "470R" H 4930 2295 50  0000 R CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 4930 2250 50  0001 C CNN
F 3 "~" H 5000 2250 50  0001 C CNN
	1    5000 2250
	-1   0    0    1   
$EndComp
Wire Wire Line
	4500 2000 4600 2000
Connection ~ 4500 2000
Wire Wire Line
	5000 2000 5000 2100
Wire Wire Line
	5000 2400 5000 2500
Wire Wire Line
	5000 2500 4500 2500
Connection ~ 4500 2500
Wire Wire Line
	3550 2300 3550 3000
Wire Wire Line
	3550 1100 3700 1100
Wire Wire Line
	3550 800  4000 800 
Wire Wire Line
	4300 800  4400 800 
Wire Wire Line
	4400 1100 4000 1100
Wire Wire Line
	3550 3000 3550 3150
Wire Wire Line
	3550 3300 4000 3300
Connection ~ 3550 3000
Wire Wire Line
	4300 3300 4400 3300
Wire Wire Line
	4400 3300 4400 3150
Wire Wire Line
	4000 3000 4400 3000
Wire Wire Line
	3550 3150 3300 3150
Wire Wire Line
	3300 3150 3300 3000
Connection ~ 3550 3150
Wire Wire Line
	3550 3150 3550 3300
Wire Wire Line
	4400 3150 4600 3150
Wire Wire Line
	4600 3150 4600 3200
Connection ~ 4400 3150
Wire Wire Line
	4400 3150 4400 3000
Wire Wire Line
	4400 800  4400 950 
Wire Wire Line
	4400 950  4600 950 
Wire Wire Line
	4600 950  4600 1000
Connection ~ 4400 950 
Wire Wire Line
	4400 950  4400 1100
$Comp
L Device:CP C1
U 1 1 5F863B13
P 4150 800
F 0 "C1" V 4405 800 50  0000 C CNN
F 1 "100uF" V 4314 800 50  0000 C CNN
F 2 "Capacitor_THT:CP_Radial_D10.0mm_P5.00mm" H 4188 650 50  0001 C CNN
F 3 "~" H 4150 800 50  0001 C CNN
F 4 "25V" H 4150 800 50  0001 C CNN "Model"
	1    4150 800 
	0    1    -1   0   
$EndComp
Text Notes 2700 3000 0    50   ~ 10
Mic Preamp\nGain: 50 dB
$Comp
L power:GND #PWR019
U 1 1 5F8EECF1
P 1400 9350
F 0 "#PWR019" H 1400 9100 50  0001 C CNN
F 1 "GND" H 1405 9177 50  0000 C CNN
F 2 "" H 1400 9350 50  0001 C CNN
F 3 "" H 1400 9350 50  0001 C CNN
	1    1400 9350
	1    0    0    -1  
$EndComp
Wire Wire Line
	1300 9150 1400 9150
Wire Wire Line
	1200 8950 1200 8350
Wire Wire Line
	1200 8350 1900 8350
Wire Wire Line
	1600 9150 1600 9250
Wire Wire Line
	1100 9250 1100 8850
Connection ~ 1400 9150
Wire Wire Line
	1400 9150 1500 9150
Wire Wire Line
	15550 1850 15500 1850
$Comp
L power:GND #PWR07
U 1 1 5F923283
P 15750 2400
F 0 "#PWR07" H 15750 2150 50  0001 C CNN
F 1 "GND" H 15755 2227 50  0000 C CNN
F 2 "" H 15750 2400 50  0001 C CNN
F 3 "" H 15750 2400 50  0001 C CNN
	1    15750 2400
	1    0    0    -1  
$EndComp
Text Notes 5400 3000 0    50   ~ 10
Adjustable Input Gain\nGain: -15 to 30 dB
$Comp
L Amplifier_Operational:NE5534 U2
U 1 1 5F80D909
P 3650 2000
F 0 "U2" H 3994 2046 50  0000 L CNN
F 1 "NE5534" H 3994 1955 50  0000 L CNN
F 2 "Package_DIP:DIP-8_W7.62mm_Socket_LongPads" H 3700 2050 50  0001 C CNN
F 3 "https://www.ti.com/lit/ds/symlink/ne5534.pdf" H 3700 2150 50  0001 C CNN
	1    3650 2000
	1    0    0    1   
$EndComp
$Comp
L Amplifier_Operational:LM358 U4
U 1 1 5F810C7D
P 3900 9000
F 0 "U4" H 3900 8633 50  0000 C CNN
F 1 "LM833N" H 3900 8724 50  0000 C CNN
F 2 "Package_DIP:DIP-8_W7.62mm_Socket_LongPads" H 3900 9000 50  0001 C CNN
F 3 "https://www.ti.com/lit/ds/symlink/lm833.pdf" H 3900 9000 50  0001 C CNN
	1    3900 9000
	1    0    0    1   
$EndComp
$Comp
L Amplifier_Operational:LM358 U4
U 2 1 5F926E3F
P 6500 9200
F 0 "U4" H 6500 8833 50  0000 C CNN
F 1 "LM833N" H 6500 8924 50  0000 C CNN
F 2 "Package_DIP:DIP-8_W7.62mm_Socket_LongPads" H 6500 9200 50  0001 C CNN
F 3 "https://www.ti.com/lit/ds/symlink/lm833.pdf" H 6500 9200 50  0001 C CNN
	2    6500 9200
	1    0    0    1   
$EndComp
Text Notes 4500 10150 0    50   ~ 10
Input Module\nGain: -6 to +8 dB\nGain = (R_pot + R_22k) / R_47k\nLP_filter(R_pot): 130 - 22 kHz
$Comp
L Device:C C14
U 1 1 5FA035F7
P 5350 8500
F 0 "C14" V 5098 8500 50  0000 C CNN
F 1 "47pF" V 5189 8500 50  0000 C CNN
F 2 "Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm" H 5388 8350 50  0001 C CNN
F 3 "~" H 5350 8500 50  0001 C CNN
	1    5350 8500
	0    1    1    0   
$EndComp
$Comp
L Device:R R18
U 1 1 5FA03CB6
P 3250 8750
F 0 "R18" V 3043 8750 50  0000 C CNN
F 1 "10K" V 3134 8750 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 3180 8750 50  0001 C CNN
F 3 "~" H 3250 8750 50  0001 C CNN
	1    3250 8750
	0    1    1    0   
$EndComp
$Comp
L Device:R R21
U 1 1 5FA17C1B
P 3250 9250
F 0 "R21" V 3365 9250 50  0000 C CNN
F 1 "10K" V 3456 9250 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 3180 9250 50  0001 C CNN
F 3 "~" H 3250 9250 50  0001 C CNN
	1    3250 9250
	0    1    1    0   
$EndComp
$Comp
L Device:R R17
U 1 1 5FA193EC
P 3950 8450
F 0 "R17" V 3743 8450 50  0000 C CNN
F 1 "10K" V 3834 8450 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 3880 8450 50  0001 C CNN
F 3 "~" H 3950 8450 50  0001 C CNN
	1    3950 8450
	0    1    1    0   
$EndComp
$Comp
L Device:R R23
U 1 1 5FA1F9D1
P 3500 9450
F 0 "R23" H 3570 9496 50  0000 L CNN
F 1 "10K" H 3570 9405 50  0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 3430 9450 50  0001 C CNN
F 3 "~" H 3500 9450 50  0001 C CNN
	1    3500 9450
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR022
U 1 1 5FA228C1
P 3500 9600
F 0 "#PWR022" H 3500 9350 50  0001 C CNN
F 1 "GND" H 3505 9427 50  0000 C CNN
F 2 "" H 3500 9600 50  0001 C CNN
F 3 "" H 3500 9600 50  0001 C CNN
	1    3500 9600
	1    0    0    -1  
$EndComp
Wire Wire Line
	3400 9250 3500 9250
Wire Wire Line
	3500 9100 3600 9100
Wire Wire Line
	3400 8750 3500 8750
Wire Wire Line
	3500 8900 3600 8900
Wire Wire Line
	3500 8450 3800 8450
Wire Wire Line
	4100 8450 4300 8450
Wire Wire Line
	4300 8450 4300 9000
Wire Wire Line
	4300 9000 4200 9000
Wire Wire Line
	1400 9150 1400 9350
$Comp
L Device:R R10
U 1 1 5F84095A
P 3050 2500
F 0 "R10" V 2843 2500 50  0000 C CNN
F 1 "1K 1%" V 2934 2500 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 2980 2500 50  0001 C CNN
F 3 "~" H 3050 2500 50  0001 C CNN
	1    3050 2500
	0    1    1    0   
$EndComp
Wire Wire Line
	900  2200 900  2300
$Comp
L Device:R R20
U 1 1 5FAA4C23
P 4750 9000
F 0 "R20" V 4543 9000 50  0000 C CNN
F 1 "47K" V 4634 9000 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 4680 9000 50  0001 C CNN
F 3 "~" H 4750 9000 50  0001 C CNN
	1    4750 9000
	0    1    1    0   
$EndComp
Wire Wire Line
	1200 1900 1300 1900
Wire Wire Line
	900  2300 1300 2300
$Comp
L Device:R R19
U 1 1 5FAC6B3E
P 5350 8900
F 0 "R19" V 5143 8900 50  0000 C CNN
F 1 "22K" V 5234 8900 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 5280 8900 50  0001 C CNN
F 3 "~" H 5350 8900 50  0001 C CNN
	1    5350 8900
	0    1    1    0   
$EndComp
$Comp
L Device:R_POT RV1
U 1 1 5FAC97E9
P 5750 8900
F 0 "RV1" V 5635 8900 50  0000 C CNN
F 1 "100K" V 5544 8900 50  0000 C CNN
F 2 "Potentiometer_THT:Potentiometer_Vishay_T73XX_Horizontal" H 5750 8900 50  0001 C CNN
F 3 "https://www.vishay.com/docs/57028/64.pdf" H 5750 8900 50  0001 C CNN
F 4 "Vishay M64{Y,Z}104" H 5750 8900 50  0001 C CNN "Model"
	1    5750 8900
	0    -1   -1   0   
$EndComp
Wire Wire Line
	5100 8900 5200 8900
Wire Wire Line
	5100 8900 5100 8500
Wire Wire Line
	5100 8500 5200 8500
Connection ~ 5100 8900
Wire Wire Line
	5750 8750 5750 8650
Wire Wire Line
	5750 8650 5850 8650
Wire Wire Line
	5850 8650 5850 8500
Wire Wire Line
	5850 8500 5500 8500
Wire Wire Line
	5500 8900 5600 8900
$Comp
L power:GND #PWR020
U 1 1 5FAF156D
P 6100 9500
F 0 "#PWR020" H 6100 9250 50  0001 C CNN
F 1 "GND" H 6105 9327 50  0000 C CNN
F 2 "" H 6100 9500 50  0001 C CNN
F 3 "" H 6100 9500 50  0001 C CNN
	1    6100 9500
	1    0    0    -1  
$EndComp
Wire Wire Line
	6900 8650 6900 9000
Wire Wire Line
	6900 9200 6800 9200
Wire Wire Line
	6200 9300 6100 9300
Wire Wire Line
	6100 9300 6100 9500
Wire Wire Line
	6000 9100 6000 9200
Connection ~ 5850 8650
Wire Wire Line
	5100 8900 5100 9000
Connection ~ 4300 9000
Connection ~ 6900 9000
Wire Wire Line
	6900 9000 6900 9200
Text GLabel 7250 9000 2    50   Output ~ 0
Stage
Text GLabel 8400 2000 2    50   Output ~ 0
Mic1
Wire Wire Line
	6000 9100 6200 9100
Wire Wire Line
	5850 8650 6900 8650
$Comp
L power:GND #PWR06
U 1 1 5FFAA880
P 8200 3300
F 0 "#PWR06" H 8200 3050 50  0001 C CNN
F 1 "GND" H 8205 3127 50  0000 C CNN
F 2 "" H 8200 3300 50  0001 C CNN
F 3 "" H 8200 3300 50  0001 C CNN
	1    8200 3300
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR05
U 1 1 5FFAA886
P 7400 3300
F 0 "#PWR05" H 7400 3050 50  0001 C CNN
F 1 "GND" H 7405 3127 50  0000 C CNN
F 2 "" H 7400 3300 50  0001 C CNN
F 3 "" H 7400 3300 50  0001 C CNN
	1    7400 3300
	1    0    0    -1  
$EndComp
$Comp
L Device:C C4
U 1 1 5FFAA88C
P 7400 3150
F 0 "C4" H 7285 3104 50  0000 R CNN
F 1 "100nF" H 7285 3195 50  0000 R CNN
F 2 "Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm" H 7438 3000 50  0001 C CNN
F 3 "~" H 7400 3150 50  0001 C CNN
	1    7400 3150
	-1   0    0    1   
$EndComp
$Comp
L Device:C C5
U 1 1 5FFAA892
P 8200 3150
F 0 "C5" H 8085 3104 50  0000 R CNN
F 1 "100nF" H 8085 3195 50  0000 R CNN
F 2 "Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm" H 8238 3000 50  0001 C CNN
F 3 "~" H 8200 3150 50  0001 C CNN
	1    8200 3150
	-1   0    0    1   
$EndComp
Connection ~ 8200 2900
Wire Wire Line
	8200 2900 8200 3000
Wire Wire Line
	8200 2900 8200 2800
Wire Wire Line
	8100 2900 8200 2900
$Comp
L power:+15V #PWR03
U 1 1 5FFAA8A0
P 8200 2800
F 0 "#PWR03" H 8200 2650 50  0001 C CNN
F 1 "+15V" H 8215 2973 50  0000 C CNN
F 2 "" H 8200 2800 50  0001 C CNN
F 3 "" H 8200 2800 50  0001 C CNN
	1    8200 2800
	1    0    0    -1  
$EndComp
$Comp
L power:-15V #PWR02
U 1 1 5FFAA8A6
P 7400 2800
F 0 "#PWR02" H 7400 2900 50  0001 C CNN
F 1 "-15V" H 7415 2973 50  0000 C CNN
F 2 "" H 7400 2800 50  0001 C CNN
F 3 "" H 7400 2800 50  0001 C CNN
	1    7400 2800
	1    0    0    -1  
$EndComp
$Comp
L Amplifier_Operational:LM358 U1
U 3 1 5FFAA8AC
P 7800 3000
F 0 "U1" V 7475 3000 50  0000 C CNN
F 1 "LM833N" V 7566 3000 50  0000 C CNN
F 2 "Package_DIP:DIP-8_W7.62mm_Socket_LongPads" H 7800 3000 50  0001 C CNN
F 3 "https://www.ti.com/lit/ds/symlink/lm833.pdf" H 7800 3000 50  0001 C CNN
	3    7800 3000
	0    1    1    0   
$EndComp
Text Notes 13500 3000 0    50   ~ 10
Headphone driver\nGain: 26 dB (20)
$Comp
L Device:CP C7
U 1 1 5FFF6761
P 13250 2650
F 0 "C7" V 13505 2650 50  0000 C CNN
F 1 "1uF" V 13414 2650 50  0000 C CNN
F 2 "Capacitor_THT:CP_Radial_D5.0mm_P2.00mm" H 13288 2500 50  0001 C CNN
F 3 "~" H 13250 2650 50  0001 C CNN
F 4 "16V low ESR electrolytic // plastic film" H 13250 2650 50  0001 C CNN "Model"
	1    13250 2650
	0    -1   -1   0   
$EndComp
Wire Wire Line
	1050 8950 1200 8950
Wire Wire Line
	1050 8750 1300 8750
Wire Wire Line
	1100 8850 1050 8850
$Comp
L Connector:XLR3_AudioJack3_Combo_Ground J4
U 1 1 5F81E1F3
P 1600 8850
F 0 "J4" H 1600 9215 50  0000 C CNN
F 1 "Stage Line-In" H 1600 9124 50  0000 C CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical" H 1600 8850 50  0001 C CNN
F 3 "https://www.neutrik.com/de/produkt/ncj6fa-h.pdf" H 1600 8850 50  0001 C CNN
F 4 "Combo XLR + 6.3 mm Jack" H 1600 8850 50  0001 C CNN "Model"
	1    1600 8850
	1    0    0    -1  
$EndComp
Wire Wire Line
	1300 8750 1300 8850
Connection ~ 1300 8850
Wire Wire Line
	1300 8850 1300 9150
$Comp
L Connector:Conn_01x03_Male J5
U 1 1 602993B3
P 1450 10750
F 0 "J5" H 1558 11031 50  0000 C CNN
F 1 "PowerSupply" H 1558 10940 50  0000 C CNN
F 2 "TerminalBlock_MetzConnect:TerminalBlock_MetzConnect_Type073_RT02603HBLU_1x03_P5.08mm_Horizontal" H 1450 10750 50  0001 C CNN
F 3 "" H 1450 10750 50  0001 C CNN
	1    1450 10750
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR028
U 1 1 602A0CDE
P 2150 10850
F 0 "#PWR028" H 2150 10600 50  0001 C CNN
F 1 "GND" H 2155 10677 50  0000 C CNN
F 2 "" H 2150 10850 50  0001 C CNN
F 3 "" H 2150 10850 50  0001 C CNN
	1    2150 10850
	1    0    0    -1  
$EndComp
$Comp
L power:+15V #PWR027
U 1 1 602B7044
P 1850 10550
F 0 "#PWR027" H 1850 10400 50  0001 C CNN
F 1 "+15V" H 1865 10723 50  0000 C CNN
F 2 "" H 1850 10550 50  0001 C CNN
F 3 "" H 1850 10550 50  0001 C CNN
	1    1850 10550
	1    0    0    -1  
$EndComp
$Comp
L power:-15V #PWR029
U 1 1 602B7D59
P 1850 10950
F 0 "#PWR029" H 1850 11050 50  0001 C CNN
F 1 "-15V" H 1865 11123 50  0000 C CNN
F 2 "" H 1850 10950 50  0001 C CNN
F 3 "" H 1850 10950 50  0001 C CNN
	1    1850 10950
	-1   0    0    1   
$EndComp
Wire Wire Line
	1650 10850 1850 10850
Wire Wire Line
	1850 10850 1850 10950
Wire Wire Line
	1650 10650 1850 10650
Wire Wire Line
	1850 10650 1850 10550
Wire Wire Line
	2150 10750 2150 10850
NoConn ~ 5900 8900
NoConn ~ 3650 2300
NoConn ~ 3650 1700
Wire Wire Line
	1650 10750 2150 10750
$Comp
L power:GND #PWR035
U 1 1 609E4DD0
P 14800 2700
F 0 "#PWR035" H 14800 2450 50  0001 C CNN
F 1 "GND" H 14805 2527 50  0000 C CNN
F 2 "" H 14800 2700 50  0001 C CNN
F 3 "" H 14800 2700 50  0001 C CNN
	1    14800 2700
	1    0    0    -1  
$EndComp
$Comp
L Amplifier_Operational:LM358 U1
U 1 1 60A8F329
P 6300 2250
F 0 "U1" H 6300 1883 50  0000 C CNN
F 1 "LM833N" H 6300 1974 50  0000 C CNN
F 2 "Package_DIP:DIP-8_W7.62mm_Socket_LongPads" H 6300 2250 50  0001 C CNN
F 3 "https://www.ti.com/lit/ds/symlink/lm833.pdf" H 6300 2250 50  0001 C CNN
	1    6300 2250
	1    0    0    1   
$EndComp
$Comp
L power:GND #PWR0111
U 1 1 60BBC462
P 5900 2550
F 0 "#PWR0111" H 5900 2300 50  0001 C CNN
F 1 "GND" H 5905 2377 50  0000 C CNN
F 2 "" H 5900 2550 50  0001 C CNN
F 3 "" H 5900 2550 50  0001 C CNN
	1    5900 2550
	1    0    0    -1  
$EndComp
Wire Wire Line
	5900 2150 6000 2150
Wire Wire Line
	6000 2350 5900 2350
Wire Wire Line
	5900 2350 5900 2550
Wire Wire Line
	5900 2000 5900 2150
$Comp
L Switch:SW_SPST_LED SW2
U 1 1 60D16A9A
P 7400 1050
F 0 "SW2" H 7400 1385 50  0000 C CNN
F 1 "OnAir_1" H 7400 1294 50  0000 C CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical" H 7400 1350 50  0001 C CNN
F 3 "https://sten-eswitch-13110800-production.s3.amazonaws.com/system/asset/product_line/data_sheet/38/LP11.pdf" H 7400 1350 50  0001 C CNN
F 4 "E-Switch LP11EE1NCSYG" H 7400 1050 50  0001 C CNN "Model"
	1    7400 1050
	1    0    0    -1  
$EndComp
Connection ~ 5900 2000
Wire Wire Line
	6800 2250 6600 2250
NoConn ~ 6700 1550
$Comp
L Switch:SW_Push SW1
U 1 1 60D151FD
P 6350 750
F 0 "SW1" H 6350 965 50  0000 C CNN
F 1 "Mute_1" H 6350 874 50  0000 C CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical" H 6350 950 50  0001 C CNN
F 3 "https://www.nkkswitches.com/pdf/UBIlluminated.pdf" H 6350 950 50  0001 C CNN
F 4 "NKK Switches UB15{NBK,NK}{W,G}{01,03}N-C" H 6350 750 50  0001 C CNN "Model"
	1    6350 750 
	1    0    0    -1  
$EndComp
Wire Wire Line
	5900 1550 5900 2000
Wire Wire Line
	6550 1150 6550 1300
Wire Wire Line
	6300 1150 6550 1150
Wire Wire Line
	6300 1550 6400 1550
Connection ~ 5900 1550
Wire Wire Line
	5900 1150 5900 1550
Wire Wire Line
	5900 1150 6000 1150
Wire Wire Line
	6000 1550 5900 1550
$Comp
L Device:R_POT RV11
U 1 1 60B0D55A
P 6550 1550
F 0 "RV11" V 6435 1550 50  0000 C CNN
F 1 "50K log." V 6344 1550 50  0000 C CNN
F 2 "JBeyerstedt-Library:Potentiometer_Alps_RK11K_Single_Horizontal" V 6480 1550 50  0001 C CNN
F 3 "https://tech.alpsalpine.com/prod/e/pdf/potentiometer/rotarypotentiometers/rk11k11/rk11k11.pdf" H 6550 1550 50  0001 C CNN
F 4 "Alps RK11K1120-A503" H 6550 1550 50  0001 C CNN "Model"
	1    6550 1550
	0    -1   -1   0   
$EndComp
$Comp
L Device:R R26
U 1 1 60AAAB08
P 6150 1550
F 0 "R26" V 5943 1550 50  0000 C CNN
F 1 "270R" V 6034 1550 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 6080 1550 50  0001 C CNN
F 3 "~" H 6150 1550 50  0001 C CNN
	1    6150 1550
	0    1    1    0   
$EndComp
$Comp
L Device:C C25
U 1 1 60AA92C3
P 6150 1150
F 0 "C25" V 5898 1150 50  0000 C CNN
F 1 "100nF" V 5989 1150 50  0000 C CNN
F 2 "Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm" H 6188 1000 50  0001 C CNN
F 3 "~" H 6150 1150 50  0001 C CNN
	1    6150 1150
	0    1    1    0   
$EndComp
Text Notes 7000 1450 0    50   ~ 0
TODO: On-Air button LEDs\n(actually one rd, one gn,\nwith common anode)
Wire Wire Line
	6800 750  6550 750 
Wire Wire Line
	6150 750  5900 750 
Wire Wire Line
	5900 750  5900 1150
Connection ~ 5900 1150
Wire Wire Line
	6800 750  6800 1300
Wire Wire Line
	6550 1300 6800 1300
Connection ~ 6550 1300
Wire Wire Line
	6550 1300 6550 1400
Connection ~ 6800 1300
Wire Wire Line
	6800 1300 6800 2250
Connection ~ 1900 8850
Wire Wire Line
	2000 8850 1900 8850
Connection ~ 1600 9250
NoConn ~ 3750 1700
Wire Wire Line
	7400 2800 7400 2900
Wire Wire Line
	7500 2900 7400 2900
Connection ~ 7400 2900
Wire Wire Line
	7400 2900 7400 3000
Wire Wire Line
	3550 1700 3550 1100
Connection ~ 3550 1100
Wire Wire Line
	3550 800  3550 950 
Wire Wire Line
	3300 800  3300 950 
Wire Wire Line
	3300 950  3550 950 
Connection ~ 3550 950 
Wire Wire Line
	3550 950  3550 1100
Wire Wire Line
	600  2250 700  2250
Wire Wire Line
	700  2250 700  2300
Wire Wire Line
	800  2200 800  2250
Wire Wire Line
	800  2250 700  2250
Connection ~ 700  2250
Wire Wire Line
	600  2250 600  1900
Text Notes 4650 1650 0    50   ~ 0
HP Filter 350 Hz\nf_c = 1/(2*PI*R*C)
Wire Wire Line
	5800 2000 5900 2000
$Comp
L Device:C C26
U 1 1 5FB69AC8
P 14800 2250
F 0 "C26" H 14915 2296 50  0000 L CNN
F 1 "47nF" H 14915 2205 50  0000 L CNN
F 2 "Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm" H 14838 2100 50  0001 C CNN
F 3 "~" H 14800 2250 50  0001 C CNN
	1    14800 2250
	1    0    0    -1  
$EndComp
$Comp
L Device:CP C24
U 1 1 5FB6C2ED
P 15050 2000
F 0 "C24" V 15305 2000 50  0000 C CNN
F 1 "220uF" V 15214 2000 50  0000 C CNN
F 2 "Capacitor_THT:CP_Radial_D6.3mm_P2.50mm" H 15088 1850 50  0001 C CNN
F 3 "~" H 15050 2000 50  0001 C CNN
F 4 "16V low ESR" H 15050 2000 50  0001 C CNN "Model"
	1    15050 2000
	0    -1   -1   0   
$EndComp
$Comp
L Device:R R25
U 1 1 5FB6DC67
P 14800 2550
F 0 "R25" H 14870 2596 50  0000 L CNN
F 1 "12R" H 14870 2505 50  0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 14730 2550 50  0001 C CNN
F 3 "~" H 14800 2550 50  0001 C CNN
	1    14800 2550
	1    0    0    -1  
$EndComp
$Comp
L power:+15V #PWR0112
U 1 1 5FB9C332
P 13900 700
F 0 "#PWR0112" H 13900 550 50  0001 C CNN
F 1 "+15V" H 13915 873 50  0000 C CNN
F 2 "" H 13900 700 50  0001 C CNN
F 3 "" H 13900 700 50  0001 C CNN
	1    13900 700 
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0113
U 1 1 5FB9DA2E
P 13900 2500
F 0 "#PWR0113" H 13900 2250 50  0001 C CNN
F 1 "GND" H 13905 2327 50  0000 C CNN
F 2 "" H 13900 2500 50  0001 C CNN
F 3 "" H 13900 2500 50  0001 C CNN
	1    13900 2500
	1    0    0    -1  
$EndComp
$Comp
L Device:R_POT RV19
U 1 1 5FBA2B4E
P 12850 2650
F 0 "RV19" H 12781 2604 50  0000 R CNN
F 1 "50K log." H 12781 2695 50  0000 R CNN
F 2 "JBeyerstedt-Library:Potentiometer_Alps_RK11K_Single_Horizontal" H 12850 2650 50  0001 C CNN
F 3 "https://tech.alpsalpine.com/prod/e/pdf/potentiometer/rotarypotentiometers/rk11k11/rk11k11.pdf" H 12850 2650 50  0001 C CNN
F 4 "Alps RK11K1120-A503" H 12850 2650 50  0001 C CNN "Model"
	1    12850 2650
	1    0    0    1   
$EndComp
Wire Wire Line
	12850 2400 12850 2500
$Comp
L power:GND #PWR0114
U 1 1 5FBBA57F
P 12850 3300
F 0 "#PWR0114" H 12850 3050 50  0001 C CNN
F 1 "GND" H 12855 3127 50  0000 C CNN
F 2 "" H 12850 3300 50  0001 C CNN
F 3 "" H 12850 3300 50  0001 C CNN
	1    12850 3300
	1    0    0    -1  
$EndComp
Wire Wire Line
	12850 2800 12850 2900
Wire Wire Line
	13900 2300 13900 2400
Wire Wire Line
	13700 1900 13500 1900
Wire Wire Line
	13700 2100 13700 2400
Wire Wire Line
	13700 2400 13900 2400
Connection ~ 13900 2400
Wire Wire Line
	13900 2400 13900 2500
Wire Wire Line
	14900 2000 14800 2000
Wire Wire Line
	14800 2000 14800 2100
Wire Wire Line
	14800 2000 14300 2000
Connection ~ 14800 2000
$Comp
L Device:CP C23
U 1 1 5FD130B1
P 14150 1550
F 0 "C23" V 14405 1550 50  0000 C CNN
F 1 "100uF" V 14314 1550 50  0000 C CNN
F 2 "Capacitor_THT:CP_Radial_D10.0mm_P5.00mm" H 14188 1400 50  0001 C CNN
F 3 "~" H 14150 1550 50  0001 C CNN
F 4 "25V" H 14150 1550 50  0001 C CNN "Model"
	1    14150 1550
	0    -1   -1   0   
$EndComp
Wire Wire Line
	8400 2000 8350 2000
Wire Wire Line
	8100 2000 8100 2250
Connection ~ 6800 2250
$Comp
L Device:R R24
U 1 1 5FE4A41D
P 12850 2250
F 0 "R24" H 12780 2296 50  0000 R CNN
F 1 "330K" H 12780 2205 50  0000 R CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 12780 2250 50  0001 C CNN
F 3 "~" H 12850 2250 50  0001 C CNN
	1    12850 2250
	-1   0    0    -1  
$EndComp
Wire Wire Line
	12850 2000 12850 2100
$Comp
L Device:C C22
U 1 1 5FF934F9
P 14150 1100
F 0 "C22" V 13898 1100 50  0000 C CNN
F 1 "100nF" V 13989 1100 50  0000 C CNN
F 2 "Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm" H 14188 950 50  0001 C CNN
F 3 "~" H 14150 1100 50  0001 C CNN
	1    14150 1100
	0    1    1    0   
$EndComp
$Comp
L Device:CP C21
U 1 1 60184128
P 14450 800
F 0 "C21" V 14195 800 50  0000 C CNN
F 1 "100uF" V 14286 800 50  0000 C CNN
F 2 "Capacitor_THT:CP_Radial_D10.0mm_P5.00mm" H 14488 650 50  0001 C CNN
F 3 "~" H 14450 800 50  0001 C CNN
F 4 "25V" H 14450 800 50  0001 C CNN "Model"
	1    14450 800 
	0    -1   1    0   
$EndComp
Wire Wire Line
	13900 700  13900 800 
Wire Wire Line
	13900 800  14300 800 
Wire Wire Line
	13900 800  13900 1100
Wire Wire Line
	13900 1100 14000 1100
Connection ~ 13900 800 
Connection ~ 13900 1100
Wire Wire Line
	14300 1100 14700 1100
Wire Wire Line
	14700 1100 14700 950 
Wire Wire Line
	14700 800  14600 800 
$Comp
L power:GND #PWR0115
U 1 1 60200022
P 14900 1000
F 0 "#PWR0115" H 14900 750 50  0001 C CNN
F 1 "GND" H 14905 827 50  0000 C CNN
F 2 "" H 14900 1000 50  0001 C CNN
F 3 "" H 14900 1000 50  0001 C CNN
	1    14900 1000
	1    0    0    -1  
$EndComp
Wire Wire Line
	14900 950  14900 1000
Wire Wire Line
	14700 950  14900 950 
Connection ~ 14700 950 
Wire Wire Line
	14700 950  14700 800 
Wire Wire Line
	13900 1100 13900 1700
$Comp
L power:GND #PWR0116
U 1 1 5FCF788F
P 14300 1600
F 0 "#PWR0116" H 14300 1350 50  0001 C CNN
F 1 "GND" H 14305 1427 50  0000 C CNN
F 2 "" H 14300 1600 50  0001 C CNN
F 3 "" H 14300 1600 50  0001 C CNN
	1    14300 1600
	1    0    0    -1  
$EndComp
$Comp
L Amplifier_Audio:LM386 U7
U 1 1 5FB67AE3
P 14000 2000
F 0 "U7" H 14344 2046 50  0000 L CNN
F 1 "LM386N-4" H 14344 1955 50  0000 L CNN
F 2 "Package_DIP:DIP-8_W7.62mm_Socket_LongPads" H 14100 2100 50  0001 C CNN
F 3 "https://www.ti.com/lit/ds/symlink/lm386.pdf" H 14200 2200 50  0001 C CNN
	1    14000 2000
	1    0    0    -1  
$EndComp
Wire Wire Line
	14300 1550 14300 1600
Wire Wire Line
	14000 1550 14000 1700
$Comp
L power:PWR_FLAG #FLG0101
U 1 1 602E81BB
P 1050 10650
F 0 "#FLG0101" H 1050 10725 50  0001 C CNN
F 1 "PWR_FLAG" H 1050 10823 50  0000 C CNN
F 2 "" H 1050 10650 50  0001 C CNN
F 3 "~" H 1050 10650 50  0001 C CNN
	1    1050 10650
	1    0    0    -1  
$EndComp
$Comp
L power:PWR_FLAG #FLG0102
U 1 1 602E98DE
P 1050 10750
F 0 "#FLG0102" H 1050 10825 50  0001 C CNN
F 1 "PWR_FLAG" V 1050 10877 50  0000 L CNN
F 2 "" H 1050 10750 50  0001 C CNN
F 3 "~" H 1050 10750 50  0001 C CNN
	1    1050 10750
	0    -1   -1   0   
$EndComp
$Comp
L power:PWR_FLAG #FLG0103
U 1 1 602EA47B
P 1050 10850
F 0 "#FLG0103" H 1050 10925 50  0001 C CNN
F 1 "PWR_FLAG" H 1050 11023 50  0000 C CNN
F 2 "" H 1050 10850 50  0001 C CNN
F 3 "~" H 1050 10850 50  0001 C CNN
	1    1050 10850
	-1   0    0    1   
$EndComp
Wire Wire Line
	1050 10650 1650 10650
Connection ~ 1650 10650
Wire Wire Line
	1050 10750 1650 10750
Connection ~ 1650 10750
Wire Wire Line
	1050 10850 1650 10850
Connection ~ 1650 10850
NoConn ~ 14000 2300
NoConn ~ 14100 2300
$Comp
L Connector:TestPoint TP1
U 1 1 5FAE2168
P 8350 2000
F 0 "TP1" H 8350 2325 50  0000 C CNN
F 1 "Mic1" H 8350 2234 50  0000 C CNN
F 2 "TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm" H 8550 2000 50  0001 C CNN
F 3 "~" H 8550 2000 50  0001 C CNN
	1    8350 2000
	1    0    0    -1  
$EndComp
Wire Wire Line
	6800 2250 8100 2250
Connection ~ 8350 2000
$Comp
L Connector:TestPoint TP8
U 1 1 5FC8BE08
P 7200 9000
F 0 "TP8" H 7200 9325 50  0000 C CNN
F 1 "Stage" H 7200 9234 50  0000 C CNN
F 2 "TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm" H 7400 9000 50  0001 C CNN
F 3 "~" H 7400 9000 50  0001 C CNN
	1    7200 9000
	1    0    0    -1  
$EndComp
Connection ~ 7200 9000
Wire Wire Line
	7200 9000 7250 9000
Wire Wire Line
	13000 2650 13100 2650
Wire Wire Line
	13400 2650 13500 2650
Text Notes 2250 10100 0    50   ~ 10
Balanced Line Input Converter\nGain: 1\n220pF for HF rolloff (20 kHz)
Wire Wire Line
	4900 2000 5000 2000
$Comp
L Device:R R3
U 1 1 601CC821
P 2750 8750
F 0 "R3" V 2957 8750 50  0000 C CNN
F 1 "10K" V 2866 8750 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 2680 8750 50  0001 C CNN
F 3 "~" H 2750 8750 50  0001 C CNN
	1    2750 8750
	0    -1   -1   0   
$EndComp
$Comp
L Device:C C27
U 1 1 601CD9A5
P 3000 9000
F 0 "C27" H 3115 9046 50  0000 L CNN
F 1 "220pF" H 3115 8955 50  0000 L CNN
F 2 "Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm" H 3038 8850 50  0001 C CNN
F 3 "~" H 3000 9000 50  0001 C CNN
	1    3000 9000
	1    0    0    -1  
$EndComp
$Comp
L Device:R R8
U 1 1 601CF7CB
P 2750 9250
F 0 "R8" V 2957 9250 50  0000 C CNN
F 1 "10K" V 2866 9250 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 2680 9250 50  0001 C CNN
F 3 "~" H 2750 9250 50  0001 C CNN
	1    2750 9250
	0    -1   -1   0   
$EndComp
$Comp
L Device:R R4
U 1 1 601D068B
P 2400 9000
F 0 "R4" H 2330 8954 50  0000 R CNN
F 1 "3.3K" H 2330 9045 50  0000 R CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 2330 9000 50  0001 C CNN
F 3 "~" H 2400 9000 50  0001 C CNN
	1    2400 9000
	-1   0    0    1   
$EndComp
Connection ~ 3500 8750
Wire Wire Line
	3500 8750 3500 8450
Wire Wire Line
	3500 8750 3500 8900
Connection ~ 3500 9250
Wire Wire Line
	3500 9250 3500 9300
Wire Wire Line
	3500 9100 3500 9250
Wire Wire Line
	2400 8750 2400 8850
Wire Wire Line
	2400 8750 2600 8750
Wire Wire Line
	2400 9150 2400 9250
Wire Wire Line
	2400 9250 2600 9250
Wire Wire Line
	2900 9250 3000 9250
Wire Wire Line
	3000 9250 3000 9150
Wire Wire Line
	2900 8750 3000 8750
Wire Wire Line
	3000 8750 3000 8850
Wire Wire Line
	3000 8750 3100 8750
Connection ~ 3000 8750
Wire Wire Line
	3000 9250 3100 9250
Connection ~ 3000 9250
Wire Wire Line
	5100 9200 6000 9200
Wire Wire Line
	4900 9000 5100 9000
Connection ~ 5100 9000
Wire Wire Line
	5100 9000 5100 9200
Wire Wire Line
	5000 2000 5500 2000
Connection ~ 5000 2000
Wire Wire Line
	13500 1900 13500 2650
Wire Wire Line
	8100 2000 8350 2000
Text Notes 14400 1500 0    50   ~ 0
TODO: C at pin 7 has\nno audible effect
$Comp
L Device:R R27
U 1 1 5FF18A7E
P 12850 3050
F 0 "R27" H 12780 3096 50  0000 R CNN
F 1 "2.2K" H 12780 3005 50  0000 R CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 12780 3050 50  0001 C CNN
F 3 "~" H 12850 3050 50  0001 C CNN
	1    12850 3050
	-1   0    0    -1  
$EndComp
Wire Wire Line
	12850 3200 12850 3300
Wire Wire Line
	1100 9250 1600 9250
Wire Wire Line
	1900 8350 1900 8850
Wire Wire Line
	2000 8750 2400 8750
Wire Wire Line
	2000 8750 2000 8850
Connection ~ 4250 10550
Wire Wire Line
	4250 10550 4250 10650
Wire Wire Line
	4250 10550 4250 10450
Wire Wire Line
	4150 10550 4250 10550
$Comp
L Amplifier_Operational:LM358 U4
U 3 1 5F92849F
P 3850 10650
F 0 "U4" V 3525 10650 50  0000 C CNN
F 1 "LM833N" V 3616 10650 50  0000 C CNN
F 2 "Package_DIP:DIP-8_W7.62mm_Socket_LongPads" H 3850 10650 50  0001 C CNN
F 3 "https://www.ti.com/lit/ds/symlink/lm833.pdf" H 3850 10650 50  0001 C CNN
	3    3850 10650
	0    1    1    0   
$EndComp
$Comp
L power:-15V #PWR023
U 1 1 5F938A79
P 3450 10450
F 0 "#PWR023" H 3450 10550 50  0001 C CNN
F 1 "-15V" H 3465 10623 50  0000 C CNN
F 2 "" H 3450 10450 50  0001 C CNN
F 3 "" H 3450 10450 50  0001 C CNN
	1    3450 10450
	1    0    0    -1  
$EndComp
$Comp
L power:+15V #PWR024
U 1 1 5F939835
P 4250 10450
F 0 "#PWR024" H 4250 10300 50  0001 C CNN
F 1 "+15V" H 4265 10623 50  0000 C CNN
F 2 "" H 4250 10450 50  0001 C CNN
F 3 "" H 4250 10450 50  0001 C CNN
	1    4250 10450
	1    0    0    -1  
$EndComp
Wire Wire Line
	3450 10550 3450 10650
Wire Wire Line
	3450 10450 3450 10550
Connection ~ 3450 10550
Wire Wire Line
	3450 10550 3550 10550
$Comp
L Device:C C16
U 1 1 5F93AE68
P 4250 10800
F 0 "C16" H 4135 10754 50  0000 R CNN
F 1 "100nF" H 4135 10845 50  0000 R CNN
F 2 "Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm" H 4288 10650 50  0001 C CNN
F 3 "~" H 4250 10800 50  0001 C CNN
	1    4250 10800
	-1   0    0    1   
$EndComp
$Comp
L Device:C C15
U 1 1 5F93A49E
P 3450 10800
F 0 "C15" H 3335 10754 50  0000 R CNN
F 1 "100nF" H 3335 10845 50  0000 R CNN
F 2 "Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm" H 3488 10650 50  0001 C CNN
F 3 "~" H 3450 10800 50  0001 C CNN
	1    3450 10800
	-1   0    0    1   
$EndComp
$Comp
L power:GND #PWR025
U 1 1 5F9381DA
P 3450 10950
F 0 "#PWR025" H 3450 10700 50  0001 C CNN
F 1 "GND" H 3455 10777 50  0000 C CNN
F 2 "" H 3450 10950 50  0001 C CNN
F 3 "" H 3450 10950 50  0001 C CNN
	1    3450 10950
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR026
U 1 1 5F93633D
P 4250 10950
F 0 "#PWR026" H 4250 10700 50  0001 C CNN
F 1 "GND" H 4255 10777 50  0000 C CNN
F 2 "" H 4250 10950 50  0001 C CNN
F 3 "" H 4250 10950 50  0001 C CNN
	1    4250 10950
	1    0    0    -1  
$EndComp
Connection ~ 2400 9250
Wire Wire Line
	1600 9250 2400 9250
Connection ~ 2400 8750
Wire Wire Line
	12350 2000 12850 2000
Wire Wire Line
	11200 1900 11200 2600
Connection ~ 11200 1900
Wire Wire Line
	10200 850  10650 850 
Wire Wire Line
	10200 1600 10650 1600
Wire Wire Line
	10200 2850 10650 2850
Wire Wire Line
	10200 2350 10650 2350
Wire Wire Line
	10650 3250 11300 3250
Wire Wire Line
	11300 3250 11300 3300
Connection ~ 11300 3250
Wire Wire Line
	10650 2750 11300 2750
Wire Wire Line
	11150 3100 11200 3100
Wire Wire Line
	11200 2600 11200 3100
Connection ~ 11200 2600
Wire Wire Line
	11150 2600 11200 2600
Wire Wire Line
	11150 1100 11200 1100
Wire Wire Line
	10800 1850 10850 1850
Wire Wire Line
	10800 1100 10850 1100
Wire Wire Line
	11150 1850 11200 1850
$Comp
L Device:R R31
U 1 1 6021952F
P 11000 3100
F 0 "R31" V 10793 3100 50  0000 C CNN
F 1 "22K" V 10884 3100 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 10930 3100 50  0001 C CNN
F 3 "~" H 11000 3100 50  0001 C CNN
	1    11000 3100
	0    1    1    0   
$EndComp
$Comp
L Device:R R30
U 1 1 60218A82
P 11000 2600
F 0 "R30" V 10793 2600 50  0000 C CNN
F 1 "22K" V 10884 2600 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 10930 2600 50  0001 C CNN
F 3 "~" H 11000 2600 50  0001 C CNN
	1    11000 2600
	0    1    1    0   
$EndComp
Wire Wire Line
	11300 2750 11300 3250
$Comp
L Device:R R29
U 1 1 601F3758
P 11000 1850
F 0 "R29" V 10793 1850 50  0000 C CNN
F 1 "22K" V 10884 1850 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 10930 1850 50  0001 C CNN
F 3 "~" H 11000 1850 50  0001 C CNN
	1    11000 1850
	0    1    1    0   
$EndComp
Connection ~ 11550 1900
$Comp
L Device:R R28
U 1 1 5FFA3C32
P 11000 1100
F 0 "R28" V 10793 1100 50  0000 C CNN
F 1 "22K" V 10884 1100 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 10930 1100 50  0001 C CNN
F 3 "~" H 11000 1100 50  0001 C CNN
	1    11000 1100
	0    1    1    0   
$EndComp
$Comp
L Device:R_POT RV14
U 1 1 6016D9DA
P 10650 1850
F 0 "RV14" H 10581 1804 50  0000 R CNN
F 1 "50K log." H 10581 1895 50  0000 R CNN
F 2 "JBeyerstedt-Library:Potentiometer_Alps_RK11K_Single_Horizontal" V 10580 1850 50  0001 C CNN
F 3 "https://tech.alpsalpine.com/prod/e/pdf/potentiometer/rotarypotentiometers/rk11k11/rk11k11.pdf" H 10650 1850 50  0001 C CNN
F 4 "Alps RK11K1120-A503" H 10650 1850 50  0001 C CNN "Model"
	1    10650 1850
	1    0    0    1   
$EndComp
Wire Wire Line
	11550 1300 11550 1900
Wire Wire Line
	12350 1300 12350 2000
Wire Wire Line
	11200 1900 11550 1900
Connection ~ 10200 850 
$Comp
L Connector:TestPoint TP2
U 1 1 5FC8AC2C
P 10200 850
F 0 "TP2" H 10200 1083 50  0000 C CNN
F 1 "Stage" H 10200 1174 50  0000 C CNN
F 2 "TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm" H 10400 850 50  0001 C CNN
F 3 "~" H 10400 850 50  0001 C CNN
	1    10200 850 
	1    0    0    -1  
$EndComp
$Comp
L Connector:TestPoint TP5
U 1 1 5FC8A1ED
P 10200 2850
F 0 "TP5" H 10200 3175 50  0000 C CNN
F 1 "Mic3" H 10200 3084 50  0000 C CNN
F 2 "TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm" H 10400 2850 50  0001 C CNN
F 3 "~" H 10400 2850 50  0001 C CNN
	1    10200 2850
	1    0    0    -1  
$EndComp
$Comp
L Connector:TestPoint TP4
U 1 1 5FC89B55
P 10200 2350
F 0 "TP4" H 10200 2675 50  0000 C CNN
F 1 "Mic2" H 10200 2584 50  0000 C CNN
F 2 "TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm" H 10400 2350 50  0001 C CNN
F 3 "~" H 10400 2350 50  0001 C CNN
	1    10200 2350
	1    0    0    -1  
$EndComp
Connection ~ 10200 1600
$Comp
L Connector:TestPoint TP3
U 1 1 5FC89275
P 10200 1600
F 0 "TP3" H 10200 1925 50  0000 C CNN
F 1 "Mic1" H 10200 1834 50  0000 C CNN
F 2 "TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm" H 10400 1600 50  0001 C CNN
F 3 "~" H 10400 1600 50  0001 C CNN
	1    10200 1600
	1    0    0    -1  
$EndComp
Text Notes 9950 2850 0    50   ~ 0
Mic3
Text Notes 9950 2350 0    50   ~ 0
Mic2
Wire Wire Line
	11200 1100 11200 1850
Wire Wire Line
	11200 1850 11200 1900
Connection ~ 11200 1850
Wire Wire Line
	10650 2350 10650 2450
Wire Wire Line
	10650 2850 10650 2950
$Comp
L Device:R_POT_Dual RV15
U 1 1 5FD69197
P 10750 2850
F 0 "RV15" V 10550 2650 50  0000 R CNN
F 1 "50K log. st." V 10450 2650 50  0000 R CNN
F 2 "Potentiometer_THT:Potentiometer_Alps_RK09L_Double_Horizontal" H 11000 2775 50  0001 C CNN
F 3 "https://tech.alpsalpine.com/prod/e/pdf/potentiometer/rotarypotentiometers/rk14k12/rk14k12.pdf" H 11000 2775 50  0001 C CNN
F 4 "Alps RK14K12B0A0R / RK09L1220" H 10750 2850 50  0001 C CNN "Model"
	1    10750 2850
	0    1    -1   0   
$EndComp
$Comp
L power:GND #PWR0118
U 1 1 5FD303BF
P 11300 3300
F 0 "#PWR0118" H 11300 3050 50  0001 C CNN
F 1 "GND" H 11305 3127 50  0000 C CNN
F 2 "" H 11300 3300 50  0001 C CNN
F 3 "" H 11300 3300 50  0001 C CNN
	1    11300 3300
	1    0    0    -1  
$EndComp
Wire Wire Line
	10150 850  10200 850 
Wire Wire Line
	10650 850  10650 950 
$Comp
L power:GND #PWR0117
U 1 1 5FCA62EC
P 10650 1250
F 0 "#PWR0117" H 10650 1000 50  0001 C CNN
F 1 "GND" H 10655 1077 50  0000 C CNN
F 2 "" H 10650 1250 50  0001 C CNN
F 3 "" H 10650 1250 50  0001 C CNN
	1    10650 1250
	1    0    0    -1  
$EndComp
Connection ~ 12350 1300
Wire Wire Line
	12250 1300 12350 1300
Connection ~ 12350 2000
Wire Wire Line
	12350 950  12350 1300
Wire Wire Line
	11950 950  12350 950 
Wire Wire Line
	12250 2000 12350 2000
$Comp
L power:GND #PWR036
U 1 1 5FF79FFE
P 10650 2000
F 0 "#PWR036" H 10650 1750 50  0001 C CNN
F 1 "GND" H 10655 1827 50  0000 C CNN
F 2 "" H 10650 2000 50  0001 C CNN
F 3 "" H 10650 2000 50  0001 C CNN
	1    10650 2000
	1    0    0    -1  
$EndComp
Wire Wire Line
	10150 1600 10200 1600
Wire Wire Line
	10650 1600 10650 1700
Wire Wire Line
	11550 1900 11650 1900
Wire Wire Line
	11550 2100 11550 2300
Wire Wire Line
	11650 2100 11550 2100
Connection ~ 11550 1300
Wire Wire Line
	11550 950  11650 950 
Wire Wire Line
	11550 1300 11550 950 
$Comp
L power:GND #PWR010
U 1 1 5FFF6777
P 11550 2300
F 0 "#PWR010" H 11550 2050 50  0001 C CNN
F 1 "GND" H 11555 2127 50  0000 C CNN
F 2 "" H 11550 2300 50  0001 C CNN
F 3 "" H 11550 2300 50  0001 C CNN
	1    11550 2300
	1    0    0    -1  
$EndComp
Wire Wire Line
	11550 1300 11950 1300
Text Notes 11450 3000 0    50   ~ 10
Summing Module\nGain: -inf to 0 dB per Ch.
$Comp
L Device:C C3
U 1 1 5FFF675B
P 11800 950
F 0 "C3" V 11548 950 50  0000 C CNN
F 1 "22pF" V 11639 950 50  0000 C CNN
F 2 "Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm" H 11838 800 50  0001 C CNN
F 3 "~" H 11800 950 50  0001 C CNN
	1    11800 950 
	0    1    1    0   
$EndComp
$Comp
L Device:R_POT RV13
U 1 1 5FFF6755
P 10650 1100
F 0 "RV13" H 10580 1054 50  0000 R CNN
F 1 "50K log." H 10580 1145 50  0000 R CNN
F 2 "JBeyerstedt-Library:Potentiometer_Alps_RK11K_Single_Horizontal" V 10580 1100 50  0001 C CNN
F 3 "https://tech.alpsalpine.com/prod/e/pdf/potentiometer/rotarypotentiometers/rk11k11/rk11k11.pdf" H 10650 1100 50  0001 C CNN
F 4 "Alps RK11K1120-A503" H 10650 1100 50  0001 C CNN "Model"
	1    10650 1100
	1    0    0    1   
$EndComp
$Comp
L Device:R R9
U 1 1 5FFF6743
P 12100 1300
F 0 "R9" V 11893 1300 50  0000 C CNN
F 1 "22K" V 11984 1300 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 12030 1300 50  0001 C CNN
F 3 "~" H 12100 1300 50  0001 C CNN
	1    12100 1300
	0    1    1    0   
$EndComp
$Comp
L Amplifier_Operational:LM358 U1
U 2 1 5FFF673D
P 11950 2000
F 0 "U1" H 11950 1633 50  0000 C CNN
F 1 "LM833N" H 11950 1724 50  0000 C CNN
F 2 "Package_DIP:DIP-8_W7.62mm_Socket_LongPads" H 11950 2000 50  0001 C CNN
F 3 "https://www.ti.com/lit/ds/symlink/lm833.pdf" H 11950 2000 50  0001 C CNN
	2    11950 2000
	1    0    0    1   
$EndComp
Text GLabel 10150 1600 0    50   Input ~ 0
Mic1
Text GLabel 10150 850  0    50   Input ~ 0
Stage
Wire Wire Line
	15550 2050 15300 2050
Wire Wire Line
	15300 1950 15550 1950
Wire Wire Line
	15500 2300 15750 2300
Wire Wire Line
	15750 2300 15750 2250
Wire Wire Line
	15500 1850 15500 2300
Wire Wire Line
	15750 2300 15750 2400
Connection ~ 15750 2300
Wire Wire Line
	15300 1950 15300 2000
Wire Wire Line
	15200 2000 15300 2000
Connection ~ 15300 2000
Wire Wire Line
	15300 2000 15300 2050
Wire Wire Line
	6900 9000 7200 9000
Wire Wire Line
	4300 9000 4600 9000
Wire Wire Line
	12150 9000 12500 9000
Wire Wire Line
	15200 8650 15200 8550
Connection ~ 15200 8650
Wire Wire Line
	15400 8650 15200 8650
Wire Wire Line
	15200 9050 15200 9150
Connection ~ 15200 9050
Wire Wire Line
	15200 9050 15700 9050
Wire Wire Line
	11950 9300 12150 9300
$Comp
L Device:R R12
U 1 1 5FD14A6B
P 10600 8650
F 0 "R12" V 10393 8650 50  0000 C CNN
F 1 "22K" V 10484 8650 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 10530 8650 50  0001 C CNN
F 3 "~" H 10600 8650 50  0001 C CNN
	1    10600 8650
	0    1    1    0   
$EndComp
$Comp
L Device:R R14
U 1 1 5FD2515A
P 10600 9000
F 0 "R14" V 10393 9000 50  0000 C CNN
F 1 "22K" V 10484 9000 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 10530 9000 50  0001 C CNN
F 3 "~" H 10600 9000 50  0001 C CNN
	1    10600 9000
	0    1    1    0   
$EndComp
Wire Wire Line
	12500 9000 13500 9000
Wire Wire Line
	11150 9200 11150 8800
Connection ~ 11150 9200
Wire Wire Line
	10200 9350 10450 9350
Wire Wire Line
	10200 9000 10450 9000
$Comp
L Connector:TestPoint TP11
U 1 1 5FC9BB36
P 10200 9350
F 0 "TP11" H 10143 9468 50  0000 R CNN
F 1 "Mic3" H 10143 9377 50  0000 R CNN
F 2 "TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm" H 10400 9350 50  0001 C CNN
F 3 "~" H 10400 9350 50  0001 C CNN
	1    10200 9350
	1    0    0    -1  
$EndComp
$Comp
L Connector:TestPoint TP10
U 1 1 5FC9B2AB
P 10200 9000
F 0 "TP10" H 10143 9118 50  0000 R CNN
F 1 "Mic2" H 10143 9027 50  0000 R CNN
F 2 "TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm" H 10400 9000 50  0001 C CNN
F 3 "~" H 10400 9000 50  0001 C CNN
	1    10200 9000
	1    0    0    -1  
$EndComp
Wire Wire Line
	10200 8650 10450 8650
Connection ~ 10200 8650
$Comp
L Connector:TestPoint TP9
U 1 1 5FC9AA71
P 10200 8650
F 0 "TP9" H 10200 8975 50  0000 C CNN
F 1 "Mic1" H 10200 8884 50  0000 C CNN
F 2 "TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm" H 10400 8650 50  0001 C CNN
F 3 "~" H 10400 8650 50  0001 C CNN
	1    10200 8650
	1    0    0    -1  
$EndComp
Connection ~ 12500 9000
$Comp
L Connector:TestPoint TP6
U 1 1 5FC8F283
P 12500 9000
F 0 "TP6" H 12500 9325 50  0000 C CNN
F 1 "MicSum" H 12500 9234 50  0000 C CNN
F 2 "TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm" H 12700 9000 50  0001 C CNN
F 3 "~" H 12700 9000 50  0001 C CNN
	1    12500 9000
	1    0    0    -1  
$EndComp
Wire Wire Line
	13400 8450 13400 8550
Wire Wire Line
	13400 8550 13500 8550
Connection ~ 13400 8550
Wire Wire Line
	13300 8550 13400 8550
Wire Wire Line
	12900 8550 13000 8550
Wire Wire Line
	12900 8650 12900 8550
Wire Wire Line
	12900 9450 12900 9550
Wire Wire Line
	13000 9450 12900 9450
Wire Wire Line
	13400 9450 13500 9450
Connection ~ 13400 9450
Wire Wire Line
	13400 9450 13400 9550
Wire Wire Line
	13300 9450 13400 9450
Wire Wire Line
	15200 9150 15100 9150
Wire Wire Line
	15200 9000 15200 9050
Wire Wire Line
	15100 9000 15200 9000
Wire Wire Line
	15200 8550 15100 8550
Wire Wire Line
	15200 8700 15200 8650
Wire Wire Line
	15100 8700 15200 8700
Wire Wire Line
	15700 9050 15700 8950
Wire Wire Line
	15200 9450 15200 9550
Wire Wire Line
	15100 9450 15200 9450
$Comp
L power:GND #PWR0105
U 1 1 6049ECFC
P 15200 9550
F 0 "#PWR0105" H 15200 9300 50  0001 C CNN
F 1 "GND" H 15205 9377 50  0000 C CNN
F 2 "" H 15200 9550 50  0001 C CNN
F 3 "" H 15200 9550 50  0001 C CNN
	1    15200 9550
	1    0    0    -1  
$EndComp
$Comp
L Device:C C17
U 1 1 604659B0
P 13150 8550
F 0 "C17" V 12898 8550 50  0000 C CNN
F 1 "1uF" V 12989 8550 50  0000 C CNN
F 2 "Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm" H 13188 8400 50  0001 C CNN
F 3 "~" H 13150 8550 50  0001 C CNN
	1    13150 8550
	0    1    1    0   
$EndComp
$Comp
L Device:C C18
U 1 1 60444365
P 13150 9450
F 0 "C18" V 12898 9450 50  0000 C CNN
F 1 "1uF" V 12989 9450 50  0000 C CNN
F 2 "Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm" H 13188 9300 50  0001 C CNN
F 3 "~" H 13150 9450 50  0001 C CNN
	1    13150 9450
	0    1    1    0   
$EndComp
$Comp
L power:GND #PWR0104
U 1 1 60442CD0
P 12900 9550
F 0 "#PWR0104" H 12900 9300 50  0001 C CNN
F 1 "GND" H 12905 9377 50  0000 C CNN
F 2 "" H 12900 9550 50  0001 C CNN
F 3 "" H 12900 9550 50  0001 C CNN
	1    12900 9550
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0103
U 1 1 604420CE
P 12900 8650
F 0 "#PWR0103" H 12900 8400 50  0001 C CNN
F 1 "GND" H 12905 8477 50  0000 C CNN
F 2 "" H 12900 8650 50  0001 C CNN
F 3 "" H 12900 8650 50  0001 C CNN
	1    12900 8650
	1    0    0    -1  
$EndComp
$Comp
L power:+15V #PWR0102
U 1 1 60441414
P 13400 8450
F 0 "#PWR0102" H 13400 8300 50  0001 C CNN
F 1 "+15V" H 13415 8623 50  0000 C CNN
F 2 "" H 13400 8450 50  0001 C CNN
F 3 "" H 13400 8450 50  0001 C CNN
	1    13400 8450
	1    0    0    -1  
$EndComp
$Comp
L power:-15V #PWR0101
U 1 1 6044025E
P 13400 9550
F 0 "#PWR0101" H 13400 9650 50  0001 C CNN
F 1 "-15V" H 13415 9723 50  0000 C CNN
F 2 "" H 13400 9550 50  0001 C CNN
F 3 "" H 13400 9550 50  0001 C CNN
	1    13400 9550
	-1   0    0    1   
$EndComp
$Comp
L JBeyerstedt-Library:DRV134PA U5
U 1 1 603FAC5E
P 13500 8700
F 0 "U5" H 14300 9187 60  0000 C CNN
F 1 "DRV134PA" H 14300 9081 60  0000 C CNN
F 2 "Package_DIP:DIP-8_W7.62mm_Socket_LongPads" H 14300 9040 60  0001 C CNN
F 3 "https://www.ti.com/lit/ds/symlink/drv134.pdf" H 14300 9081 60  0001 C CNN
	1    13500 8700
	1    0    0    -1  
$EndComp
Wire Wire Line
	12150 9000 12150 9300
Wire Wire Line
	10850 9200 10850 9350
Connection ~ 10850 9200
Wire Wire Line
	10850 9200 11150 9200
Wire Wire Line
	10150 8650 10200 8650
Wire Wire Line
	11150 9400 11150 9600
Wire Wire Line
	11250 9400 11150 9400
Connection ~ 11950 9300
Connection ~ 11950 8800
Wire Wire Line
	11950 9300 11850 9300
Wire Wire Line
	11950 8800 11950 9300
Wire Wire Line
	11950 8450 11550 8450
Wire Wire Line
	11950 8800 11950 8450
Wire Wire Line
	11850 8800 11950 8800
Connection ~ 11150 8800
Wire Wire Line
	11150 8450 11250 8450
Wire Wire Line
	11150 8800 11150 8450
Text Notes 13800 9800 0    50   ~ 10
Line driver\nGain: 6 dB
$Comp
L power:GND #PWR018
U 1 1 5FD7D2A6
P 11150 9600
F 0 "#PWR018" H 11150 9350 50  0001 C CNN
F 1 "GND" H 11155 9427 50  0000 C CNN
F 2 "" H 11150 9600 50  0001 C CNN
F 3 "" H 11150 9600 50  0001 C CNN
	1    11150 9600
	1    0    0    -1  
$EndComp
Wire Wire Line
	11150 8800 11550 8800
Wire Wire Line
	11250 9200 11150 9200
Connection ~ 10850 9000
Wire Wire Line
	10850 9350 10750 9350
Wire Wire Line
	10850 9000 10850 9200
Wire Wire Line
	10850 9000 10750 9000
Wire Wire Line
	10850 8650 10850 9000
Wire Wire Line
	10750 8650 10850 8650
Text Notes 10350 9800 0    50   ~ 10
Summing Module\nGain: 0 dB
$Comp
L Device:C C10
U 1 1 5FD269DB
P 11400 8450
F 0 "C10" V 11148 8450 50  0000 C CNN
F 1 "22pF" V 11239 8450 50  0000 C CNN
F 2 "Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm" H 11438 8300 50  0001 C CNN
F 3 "~" H 11400 8450 50  0001 C CNN
	1    11400 8450
	0    1    1    0   
$EndComp
$Comp
L Device:R R13
U 1 1 5FD25F73
P 11700 8800
F 0 "R13" V 11493 8800 50  0000 C CNN
F 1 "22K" V 11584 8800 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 11630 8800 50  0001 C CNN
F 3 "~" H 11700 8800 50  0001 C CNN
	1    11700 8800
	0    1    1    0   
$EndComp
$Comp
L Device:R R16
U 1 1 5FD258D7
P 10600 9350
F 0 "R16" V 10393 9350 50  0000 C CNN
F 1 "22K" V 10484 9350 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 10530 9350 50  0001 C CNN
F 3 "~" H 10600 9350 50  0001 C CNN
	1    10600 9350
	0    1    1    0   
$EndComp
Text GLabel 10150 8650 0    50   Input ~ 0
Mic1
$Comp
L Amplifier_Operational:LM358 U3
U 3 1 5FCF1284
P 10550 10500
F 0 "U3" V 10225 10500 50  0000 C CNN
F 1 "LM833N" V 10316 10500 50  0000 C CNN
F 2 "Package_DIP:DIP-8_W7.62mm_Socket_LongPads" H 10550 10500 50  0001 C CNN
F 3 "https://www.ti.com/lit/ds/symlink/lm833.pdf" H 10550 10500 50  0001 C CNN
	3    10550 10500
	0    1    1    0   
$EndComp
$Comp
L power:-15V #PWR013
U 1 1 5FCF127E
P 10150 10300
F 0 "#PWR013" H 10150 10400 50  0001 C CNN
F 1 "-15V" H 10165 10473 50  0000 C CNN
F 2 "" H 10150 10300 50  0001 C CNN
F 3 "" H 10150 10300 50  0001 C CNN
	1    10150 10300
	1    0    0    -1  
$EndComp
$Comp
L power:+15V #PWR014
U 1 1 5FCF1278
P 10950 10300
F 0 "#PWR014" H 10950 10150 50  0001 C CNN
F 1 "+15V" H 10965 10473 50  0000 C CNN
F 2 "" H 10950 10300 50  0001 C CNN
F 3 "" H 10950 10300 50  0001 C CNN
	1    10950 10300
	1    0    0    -1  
$EndComp
Wire Wire Line
	10850 10400 10950 10400
Wire Wire Line
	10950 10400 10950 10300
Wire Wire Line
	10950 10400 10950 10500
Connection ~ 10950 10400
Wire Wire Line
	10150 10400 10150 10500
Wire Wire Line
	10150 10300 10150 10400
Connection ~ 10150 10400
Wire Wire Line
	10150 10400 10250 10400
$Comp
L Device:C C12
U 1 1 5FCF126A
P 10950 10650
F 0 "C12" H 10835 10604 50  0000 R CNN
F 1 "100nF" H 10835 10695 50  0000 R CNN
F 2 "Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm" H 10988 10500 50  0001 C CNN
F 3 "~" H 10950 10650 50  0001 C CNN
	1    10950 10650
	-1   0    0    1   
$EndComp
$Comp
L Device:C C11
U 1 1 5FCF1264
P 10150 10650
F 0 "C11" H 10035 10604 50  0000 R CNN
F 1 "100nF" H 10035 10695 50  0000 R CNN
F 2 "Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm" H 10188 10500 50  0001 C CNN
F 3 "~" H 10150 10650 50  0001 C CNN
	1    10150 10650
	-1   0    0    1   
$EndComp
$Comp
L power:GND #PWR016
U 1 1 5FCF125E
P 10150 10800
F 0 "#PWR016" H 10150 10550 50  0001 C CNN
F 1 "GND" H 10155 10627 50  0000 C CNN
F 2 "" H 10150 10800 50  0001 C CNN
F 3 "" H 10150 10800 50  0001 C CNN
	1    10150 10800
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR017
U 1 1 5FCF1258
P 10950 10800
F 0 "#PWR017" H 10950 10550 50  0001 C CNN
F 1 "GND" H 10955 10627 50  0000 C CNN
F 2 "" H 10950 10800 50  0001 C CNN
F 3 "" H 10950 10800 50  0001 C CNN
	1    10950 10800
	1    0    0    -1  
$EndComp
$Comp
L Amplifier_Operational:LM358 U3
U 1 1 5FCC6AFD
P 11550 9300
F 0 "U3" H 11550 8933 50  0000 C CNN
F 1 "LM833N" H 11550 9024 50  0000 C CNN
F 2 "Package_DIP:DIP-8_W7.62mm_Socket_LongPads" H 11550 9300 50  0001 C CNN
F 3 "https://www.ti.com/lit/ds/symlink/lm833.pdf" H 11550 9300 50  0001 C CNN
	1    11550 9300
	1    0    0    1   
$EndComp
Wire Wire Line
	15900 8950 15800 8950
Connection ~ 15900 8950
$Comp
L power:GND #PWR015
U 1 1 5F91C92F
P 15900 8950
F 0 "#PWR015" H 15900 8700 50  0001 C CNN
F 1 "GND" H 15905 8777 50  0000 C CNN
F 2 "" H 15900 8950 50  0001 C CNN
F 3 "" H 15900 8950 50  0001 C CNN
	1    15900 8950
	-1   0    0    -1  
$EndComp
Wire Wire Line
	16000 8950 15900 8950
Wire Wire Line
	16000 8650 16000 8950
$Comp
L Connector:XLR3_Ground J3
U 1 1 5F82013F
P 15700 8650
F 0 "J3" H 15700 9015 50  0000 C CNN
F 1 "Mix Line-Out" H 15700 8924 50  0000 C CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical" H 15700 8650 50  0001 C CNN
F 3 "https://www.neutrik.com/de/produkt/nc3md-lx.pdf" H 15700 8650 50  0001 C CNN
F 4 "XLR (male)" H 15700 8650 50  0001 C CNN "Model"
	1    15700 8650
	-1   0    0    -1  
$EndComp
Wire Wire Line
	8700 9000 9200 9000
Wire Wire Line
	9200 9000 9200 9100
Wire Wire Line
	8900 8900 8900 8800
Wire Wire Line
	8700 8900 8900 8900
Wire Wire Line
	8900 9100 8900 9200
Wire Wire Line
	8700 9100 8900 9100
$Comp
L power:-15V #PWR0121
U 1 1 5FB363BB
P 8900 9200
F 0 "#PWR0121" H 8900 9300 50  0001 C CNN
F 1 "-15V" H 8915 9373 50  0000 C CNN
F 2 "" H 8900 9200 50  0001 C CNN
F 3 "" H 8900 9200 50  0001 C CNN
	1    8900 9200
	-1   0    0    1   
$EndComp
$Comp
L power:+15V #PWR0120
U 1 1 5FB363B5
P 8900 8800
F 0 "#PWR0120" H 8900 8650 50  0001 C CNN
F 1 "+15V" H 8915 8973 50  0000 C CNN
F 2 "" H 8900 8800 50  0001 C CNN
F 3 "" H 8900 8800 50  0001 C CNN
	1    8900 8800
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR0119
U 1 1 5FB363AF
P 9200 9100
F 0 "#PWR0119" H 9200 8850 50  0001 C CNN
F 1 "GND" H 9205 8927 50  0000 C CNN
F 2 "" H 9200 9100 50  0001 C CNN
F 3 "" H 9200 9100 50  0001 C CNN
	1    9200 9100
	1    0    0    -1  
$EndComp
$Comp
L Connector:Conn_01x03_Male J6
U 1 1 5FB363A9
P 8500 9000
F 0 "J6" H 8608 9281 50  0000 C CNN
F 1 "PowerSupply" H 8608 9190 50  0000 C CNN
F 2 "TerminalBlock_MetzConnect:TerminalBlock_MetzConnect_Type073_RT02603HBLU_1x03_P5.08mm_Horizontal" H 8500 9000 50  0001 C CNN
F 3 "" H 8500 9000 50  0001 C CNN
	1    8500 9000
	1    0    0    -1  
$EndComp
$Comp
L Device:R R15
U 1 1 5FD87CA8
P 1500 1750
F 0 "R15" H 1570 1796 50  0000 L CNN
F 1 "680R 1%" H 1570 1705 50  0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 1430 1750 50  0001 C CNN
F 3 "~" H 1500 1750 50  0001 C CNN
	1    1500 1750
	1    0    0    -1  
$EndComp
$Comp
L Device:R R22
U 1 1 5FDA0F68
P 1500 2250
F 0 "R22" H 1570 2296 50  0000 L CNN
F 1 "680R 1%" H 1570 2205 50  0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 1430 2250 50  0001 C CNN
F 3 "~" H 1500 2250 50  0001 C CNN
	1    1500 2250
	1    0    0    -1  
$EndComp
$Comp
L Device:CP C19
U 1 1 5FDD46AF
P 2100 2100
F 0 "C19" H 1982 2146 50  0000 R CNN
F 1 "100uF" H 1982 2055 50  0000 R CNN
F 2 "Capacitor_THT:CP_Radial_D10.0mm_P5.00mm" H 2138 1950 50  0001 C CNN
F 3 "~" H 2100 2100 50  0001 C CNN
F 4 "25V" H 2100 2100 50  0001 C CNN "Model"
	1    2100 2100
	-1   0    0    -1  
$EndComp
$Comp
L Device:CP C13
U 1 1 5FF457A4
P 1750 1500
F 0 "C13" V 2005 1500 50  0000 C CNN
F 1 "1uF" V 1914 1500 50  0000 C CNN
F 2 "Capacitor_THT:CP_Radial_D5.0mm_P2.00mm" H 1788 1350 50  0001 C CNN
F 3 "~" H 1750 1500 50  0001 C CNN
F 4 "16V low ESR electrolytic // plastic film" H 1750 1500 50  0001 C CNN "Model"
	1    1750 1500
	0    -1   -1   0   
$EndComp
$Comp
L Device:D D1
U 1 1 5FF619A0
P 2500 1250
F 0 "D1" V 2454 1330 50  0000 L CNN
F 1 "1N4148" V 2545 1330 50  0000 L CNN
F 2 "Diode_THT:D_DO-35_SOD27_P10.16mm_Horizontal" H 2500 1250 50  0001 C CNN
F 3 "~" H 2500 1250 50  0001 C CNN
	1    2500 1250
	0    1    1    0   
$EndComp
$Comp
L Device:D D2
U 1 1 5FF62030
P 2050 1250
F 0 "D2" V 2096 1170 50  0000 R CNN
F 1 "1N4148" V 2005 1170 50  0000 R CNN
F 2 "Diode_THT:D_DO-35_SOD27_P10.16mm_Horizontal" H 2050 1250 50  0001 C CNN
F 3 "~" H 2050 1250 50  0001 C CNN
	1    2050 1250
	0    -1   -1   0   
$EndComp
Wire Wire Line
	1300 1900 1300 1500
Wire Wire Line
	1300 1500 1500 1500
Wire Wire Line
	1300 2300 1300 2500
Wire Wire Line
	1300 2500 1500 2500
Text Notes 1300 3000 0    50   ~ 10
Phantom Power\n(15V)
$Comp
L power:+15V #PWR030
U 1 1 6003E068
P 2100 1800
F 0 "#PWR030" H 2100 1650 50  0001 C CNN
F 1 "+15V" H 2115 1973 50  0000 C CNN
F 2 "" H 2100 1800 50  0001 C CNN
F 3 "" H 2100 1800 50  0001 C CNN
	1    2100 1800
	1    0    0    -1  
$EndComp
$Comp
L Device:CP C20
U 1 1 600A9821
P 1750 2500
F 0 "C20" V 1587 2500 50  0000 C CNN
F 1 "1uF" V 1496 2500 50  0000 C CNN
F 2 "Capacitor_THT:CP_Radial_D5.0mm_P2.00mm" H 1788 2350 50  0001 C CNN
F 3 "~" H 1750 2500 50  0001 C CNN
F 4 "16V low ESR electrolytic // plastic film" H 1750 2500 50  0001 C CNN "Model"
	1    1750 2500
	0    -1   -1   0   
$EndComp
Wire Wire Line
	1500 1900 1500 1950
Wire Wire Line
	1500 1950 2100 1950
Wire Wire Line
	2100 1950 2100 1800
Connection ~ 2100 1950
$Comp
L power:GND #PWR031
U 1 1 601168B4
P 2100 2250
F 0 "#PWR031" H 2100 2000 50  0001 C CNN
F 1 "GND" H 2105 2077 50  0000 C CNN
F 2 "" H 2100 2250 50  0001 C CNN
F 3 "" H 2100 2250 50  0001 C CNN
	1    2100 2250
	1    0    0    -1  
$EndComp
$Comp
L power:GND #PWR021
U 1 1 6022F48E
P 1850 900
F 0 "#PWR021" H 1850 650 50  0001 C CNN
F 1 "GND" H 1855 727 50  0000 C CNN
F 2 "" H 1850 900 50  0001 C CNN
F 3 "" H 1850 900 50  0001 C CNN
	1    1850 900 
	1    0    0    -1  
$EndComp
Wire Wire Line
	2050 1500 2050 1400
Wire Wire Line
	2500 1400 2500 1500
Wire Wire Line
	2050 1100 2050 1000
Wire Wire Line
	2050 1000 2300 1000
Wire Wire Line
	2500 1000 2500 1100
Wire Wire Line
	1850 900  1850 850 
Wire Wire Line
	1850 850  2300 850 
Wire Wire Line
	2300 850  2300 1000
Connection ~ 2300 1000
Wire Wire Line
	1500 2400 1500 2500
Connection ~ 1500 2500
Wire Wire Line
	1500 2500 1600 2500
Wire Wire Line
	1500 1600 1500 1500
Connection ~ 1500 1500
Wire Wire Line
	1500 1500 1600 1500
$Comp
L Device:D D4
U 1 1 60346518
P 2500 2750
F 0 "D4" V 2454 2830 50  0000 L CNN
F 1 "1N4148" V 2545 2830 50  0000 L CNN
F 2 "Diode_THT:D_DO-35_SOD27_P10.16mm_Horizontal" H 2500 2750 50  0001 C CNN
F 3 "~" H 2500 2750 50  0001 C CNN
	1    2500 2750
	0    1    1    0   
$EndComp
$Comp
L Device:D D3
U 1 1 6034651E
P 2050 2750
F 0 "D3" V 2096 2670 50  0000 R CNN
F 1 "1N4148" V 2005 2670 50  0000 R CNN
F 2 "Diode_THT:D_DO-35_SOD27_P10.16mm_Horizontal" H 2050 2750 50  0001 C CNN
F 3 "~" H 2050 2750 50  0001 C CNN
	1    2050 2750
	0    -1   -1   0   
$EndComp
$Comp
L power:GND #PWR032
U 1 1 60346524
P 2300 3100
F 0 "#PWR032" H 2300 2850 50  0001 C CNN
F 1 "GND" H 2305 2927 50  0000 C CNN
F 2 "" H 2300 3100 50  0001 C CNN
F 3 "" H 2300 3100 50  0001 C CNN
	1    2300 3100
	1    0    0    -1  
$EndComp
Wire Wire Line
	2300 3100 2300 3000
Wire Wire Line
	2050 2900 2050 3000
Wire Wire Line
	2300 3000 2500 3000
Wire Wire Line
	2500 3000 2500 2900
Connection ~ 2300 3000
Connection ~ 1500 1950
Wire Wire Line
	1500 1950 1500 2100
Wire Wire Line
	2050 2500 2050 2600
Wire Wire Line
	2500 2500 2500 2600
Connection ~ 2500 1500
Wire Wire Line
	2500 1500 2900 1500
Wire Wire Line
	1900 1500 2050 1500
Connection ~ 2500 2500
Wire Wire Line
	2500 2500 2900 2500
Wire Wire Line
	1900 2500 2050 2500
Connection ~ 2050 2500
Wire Wire Line
	2050 2500 2500 2500
Wire Wire Line
	2050 3000 2300 3000
Connection ~ 2050 1500
Wire Wire Line
	2050 1500 2500 1500
Wire Wire Line
	2300 1000 2500 1000
$EndSCHEMATC