EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr A3 16535 11693
encoding utf-8
Sheet 1 1
Title ""
Date ""
Rev "v0.1"
Comp "Jannik Beyerstedt"
Comment1 "Prototype PCB Modules"
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
	1    900  1900
	1    0    0    -1  
$EndComp
$Comp
L Connector:XLR3_AudioJack3_Combo_Ground J4
U 2 1 5F81B01C
P 850 8050
F 0 "J4" H 850 8415 50  0000 C CNN
F 1 "Stage Line-In" H 850 8324 50  0000 C CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical" H 850 8050 50  0001 C CNN
F 3 "https://www.neutrik.com/de/produkt/ncj6fa-h.pdf" H 850 8050 50  0001 C CNN
	2    850  8050
	1    0    0    -1  
$EndComp
$Comp
L Connector:XLR3_Ground J3
U 1 1 5F82013F
P 15300 4400
F 0 "J3" H 15300 4765 50  0000 C CNN
F 1 "Mix Line-Out" H 15300 4674 50  0000 C CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical" H 15300 4400 50  0001 C CNN
F 3 "https://www.neutrik.com/de/produkt/nc3md-lx.pdf" H 15300 4400 50  0001 C CNN
	1    15300 4400
	-1   0    0    -1  
$EndComp
$Comp
L Connector:AudioJack3_Ground J1
U 1 1 5F821533
P 15200 1800
F 0 "J1" H 14920 1768 50  0000 R CNN
F 1 "Headphone 1" H 14920 1677 50  0000 R CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical" H 15200 1800 50  0001 C CNN
F 3 "https://www.neutrik.com/de/produkt/nj3fp6c.pdf" H 15200 1800 50  0001 C CNN
	1    15200 1800
	-1   0    0    -1  
$EndComp
$Comp
L power:GNDREF #PWR08
U 1 1 5F830544
P 700 2300
F 0 "#PWR08" H 700 2050 50  0001 C CNN
F 1 "GNDREF" 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 1750 1500
F 0 "R1" V 1543 1500 50  0000 C CNN
F 1 "1K 1%" V 1634 1500 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 1680 1500 50  0001 C CNN
F 3 "~" H 1750 1500 50  0001 C CNN
	1    1750 1500
	0    1    1    0   
$EndComp
$Comp
L Device:R R6
U 1 1 5F83C638
P 4350 2000
F 0 "R6" V 4143 2000 50  0000 C CNN
F 1 "120R" V 4234 2000 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 4280 2000 50  0001 C CNN
F 3 "~" H 4350 2000 50  0001 C CNN
	1    4350 2000
	0    1    1    0   
$EndComp
$Comp
L Device:R R11
U 1 1 5F83D91E
P 3200 2500
F 0 "R11" V 2993 2500 50  0000 C CNN
F 1 "330K 1%" V 3084 2500 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 3130 2500 50  0001 C CNN
F 3 "~" H 3200 2500 50  0001 C CNN
	1    3200 2500
	0    1    1    0   
$EndComp
$Comp
L Device:R R5
U 1 1 5F83F337
P 1950 2000
F 0 "R5" H 2020 2046 50  0000 L CNN
F 1 "27K 1%" H 2020 1955 50  0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 1880 2000 50  0001 C CNN
F 3 "~" H 1950 2000 50  0001 C CNN
	1    1950 2000
	1    0    0    -1  
$EndComp
$Comp
L power:+15V #PWR01
U 1 1 5F84163B
P 2400 3000
F 0 "#PWR01" H 2400 2850 50  0001 C CNN
F 1 "+15V" H 2415 3173 50  0000 C CNN
F 2 "" H 2400 3000 50  0001 C CNN
F 3 "" H 2400 3000 50  0001 C CNN
	1    2400 3000
	1    0    0    -1  
$EndComp
$Comp
L Device:R R2
U 1 1 5F84960A
P 3200 1500
F 0 "R2" V 2993 1500 50  0000 C CNN
F 1 "330K 1%" V 3084 1500 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 3130 1500 50  0001 C CNN
F 3 "~" H 3200 1500 50  0001 C CNN
	1    3200 1500
	0    1    1    0   
$EndComp
Wire Wire Line
	3050 2000 3600 2000
Wire Wire Line
	3600 2000 3600 1500
Wire Wire Line
	3600 1500 3350 1500
Wire Wire Line
	3050 1500 2400 1500
Wire Wire Line
	3050 2500 2400 2500
Wire Wire Line
	1950 1850 1950 1800
Wire Wire Line
	1950 1800 2400 1800
Wire Wire Line
	2400 1800 2400 1900
Wire Wire Line
	2400 1900 2450 1900
Wire Wire Line
	2450 2100 2400 2100
Wire Wire Line
	2400 2100 2400 2200
Wire Wire Line
	2400 2200 1950 2200
Wire Wire Line
	1950 2200 1950 2150
Wire Wire Line
	2400 1800 2400 1500
Connection ~ 2400 1800
Connection ~ 2400 1500
Wire Wire Line
	2400 1500 1900 1500
Wire Wire Line
	2400 2200 2400 2500
Connection ~ 2400 2200
Connection ~ 2400 2500
Wire Wire Line
	2400 2500 1900 2500
Wire Wire Line
	3350 2500 3600 2500
Wire Wire Line
	3600 2500 3600 2600
Wire Wire Line
	2650 3000 2800 3000
$Comp
L Device:CP C9
U 1 1 5F8514CB
P 3250 3300
F 0 "C9" V 2995 3300 50  0000 C CNN
F 1 "100uF" V 3086 3300 50  0000 C CNN
F 2 "Capacitor_THT:CP_Radial_D10.0mm_P5.00mm" H 3288 3150 50  0001 C CNN
F 3 "~" H 3250 3300 50  0001 C CNN
	1    3250 3300
	0    -1   1    0   
$EndComp
$Comp
L Device:C C8
U 1 1 5F8504A1
P 2950 3000
F 0 "C8" V 2698 3000 50  0000 C CNN
F 1 "100nF" V 2789 3000 50  0000 C CNN
F 2 "Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm" H 2988 2850 50  0001 C CNN
F 3 "~" H 2950 3000 50  0001 C CNN
	1    2950 3000
	0    -1   1    0   
$EndComp
$Comp
L power:GNDREF #PWR012
U 1 1 5F84F240
P 3700 3200
F 0 "#PWR012" H 3700 2950 50  0001 C CNN
F 1 "GNDREF" H 3705 3027 50  0000 C CNN
F 2 "" H 3700 3200 50  0001 C CNN
F 3 "" H 3700 3200 50  0001 C CNN
	1    3700 3200
	1    0    0    -1  
$EndComp
$Comp
L power:GNDREF #PWR09
U 1 1 5F84E5EB
P 3600 2600
F 0 "#PWR09" H 3600 2350 50  0001 C CNN
F 1 "GNDREF" H 3605 2427 50  0000 C CNN
F 2 "" H 3600 2600 50  0001 C CNN
F 3 "" H 3600 2600 50  0001 C CNN
	1    3600 2600
	1    0    0    -1  
$EndComp
$Comp
L power:-15V #PWR011
U 1 1 5F842347
P 2400 800
F 0 "#PWR011" H 2400 900 50  0001 C CNN
F 1 "-15V" H 2415 973 50  0000 C CNN
F 2 "" H 2400 800 50  0001 C CNN
F 3 "" H 2400 800 50  0001 C CNN
	1    2400 800 
	1    0    0    -1  
$EndComp
$Comp
L Device:C C2
U 1 1 5F862FE2
P 2950 1100
F 0 "C2" V 2698 1100 50  0000 C CNN
F 1 "100nF" V 2789 1100 50  0000 C CNN
F 2 "Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm" H 2988 950 50  0001 C CNN
F 3 "~" H 2950 1100 50  0001 C CNN
	1    2950 1100
	0    1    1    0   
$EndComp
$Comp
L power:GNDREF #PWR04
U 1 1 5F8640B0
P 3700 1000
F 0 "#PWR04" H 3700 750 50  0001 C CNN
F 1 "GNDREF" H 3705 827 50  0000 C CNN
F 2 "" H 3700 1000 50  0001 C CNN
F 3 "" H 3700 1000 50  0001 C CNN
	1    3700 1000
	1    0    0    -1  
$EndComp
$Comp
L Device:CP C6
U 1 1 5F864500
P 3850 2000
F 0 "C6" V 4105 2000 50  0000 C CNN
F 1 "10uF" V 4014 2000 50  0000 C CNN
F 2 "Capacitor_THT:CP_Radial_D10.0mm_P5.00mm" H 3888 1850 50  0001 C CNN
F 3 "~" H 3850 2000 50  0001 C CNN
	1    3850 2000
	0    -1   -1   0   
$EndComp
$Comp
L Device:R R7
U 1 1 5F86655E
P 4100 2250
F 0 "R7" H 4030 2204 50  0000 R CNN
F 1 "5.6K" H 4030 2295 50  0000 R CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 4030 2250 50  0001 C CNN
F 3 "~" H 4100 2250 50  0001 C CNN
	1    4100 2250
	-1   0    0    1   
$EndComp
Wire Wire Line
	3600 2000 3700 2000
Connection ~ 3600 2000
Wire Wire Line
	4000 2000 4100 2000
Wire Wire Line
	4100 2000 4100 2100
Connection ~ 4100 2000
Wire Wire Line
	4100 2000 4200 2000
Wire Wire Line
	4100 2400 4100 2500
Wire Wire Line
	4100 2500 3600 2500
Connection ~ 3600 2500
Wire Wire Line
	1500 1900 1500 1500
Wire Wire Line
	1500 1500 1600 1500
Wire Wire Line
	2650 2300 2650 3000
Wire Wire Line
	2650 1100 2800 1100
Wire Wire Line
	2650 800  3100 800 
Wire Wire Line
	3400 800  3500 800 
Wire Wire Line
	3500 1100 3100 1100
Wire Wire Line
	2650 3000 2650 3150
Wire Wire Line
	2650 3300 3100 3300
Connection ~ 2650 3000
Wire Wire Line
	3400 3300 3500 3300
Wire Wire Line
	3500 3300 3500 3150
Wire Wire Line
	3100 3000 3500 3000
Wire Wire Line
	2650 3150 2400 3150
Wire Wire Line
	2400 3150 2400 3000
Connection ~ 2650 3150
Wire Wire Line
	2650 3150 2650 3300
Wire Wire Line
	3500 3150 3700 3150
Wire Wire Line
	3700 3150 3700 3200
Connection ~ 3500 3150
Wire Wire Line
	3500 3150 3500 3000
Wire Wire Line
	3500 800  3500 950 
Wire Wire Line
	3500 950  3700 950 
Wire Wire Line
	3700 950  3700 1000
Connection ~ 3500 950 
Wire Wire Line
	3500 950  3500 1100
$Comp
L Device:CP C1
U 1 1 5F863B13
P 3250 800
F 0 "C1" V 3505 800 50  0000 C CNN
F 1 "100uF" V 3414 800 50  0000 C CNN
F 2 "Capacitor_THT:CP_Radial_D10.0mm_P5.00mm" H 3288 650 50  0001 C CNN
F 3 "~" H 3250 800 50  0001 C CNN
	1    3250 800 
	0    1    -1   0   
$EndComp
Text Notes 1600 3000 0    50   ~ 0
Mic Preamp\nGain: 50 dB
$Comp
L power:GNDREF #PWR019
U 1 1 5F8EECF1
P 1400 8550
F 0 "#PWR019" H 1400 8300 50  0001 C CNN
F 1 "GNDREF" H 1405 8377 50  0000 C CNN
F 2 "" H 1400 8550 50  0001 C CNN
F 3 "" H 1400 8550 50  0001 C CNN
	1    1400 8550
	1    0    0    -1  
$EndComp
Wire Wire Line
	1300 8350 1400 8350
Wire Wire Line
	1200 8150 1200 7550
Wire Wire Line
	1200 7550 1900 7550
Wire Wire Line
	1900 7550 1900 8050
Wire Wire Line
	1600 8350 1600 8450
Wire Wire Line
	1600 8450 1100 8450
Wire Wire Line
	1100 8450 1100 8050
Connection ~ 1400 8350
Wire Wire Line
	1400 8350 1500 8350
Wire Wire Line
	15600 4400 15600 4700
Wire Wire Line
	15600 4700 15500 4700
$Comp
L power:GNDREF #PWR015
U 1 1 5F91C92F
P 15500 4700
F 0 "#PWR015" H 15500 4450 50  0001 C CNN
F 1 "GNDREF" H 15505 4527 50  0000 C CNN
F 2 "" H 15500 4700 50  0001 C CNN
F 3 "" H 15500 4700 50  0001 C CNN
	1    15500 4700
	-1   0    0    -1  
$EndComp
Connection ~ 15500 4700
Wire Wire Line
	15500 4700 15400 4700
Wire Wire Line
	15000 1700 14950 1700
Wire Wire Line
	14950 1700 14950 2100
Wire Wire Line
	14950 2100 15200 2100
$Comp
L power:GNDREF #PWR07
U 1 1 5F923283
P 15200 2100
F 0 "#PWR07" H 15200 1850 50  0001 C CNN
F 1 "GNDREF" H 15205 1927 50  0000 C CNN
F 2 "" H 15200 2100 50  0001 C CNN
F 3 "" H 15200 2100 50  0001 C CNN
	1    15200 2100
	1    0    0    -1  
$EndComp
Connection ~ 15200 2100
Text Notes 5600 2750 0    50   ~ 0
Second Gain Stage\nGain: 0 to 48.6 dB\nGain = (120 + R_pot) / 120
$Comp
L Amplifier_Operational:NE5534 U2
U 1 1 5F80D909
P 2750 2000
F 0 "U2" H 3094 2046 50  0000 L CNN
F 1 "NE5534" H 3094 1955 50  0000 L CNN
F 2 "Package_DIP:DIP-8_W7.62mm_Socket_LongPads" H 2800 2050 50  0001 C CNN
F 3 "" H 2800 2150 50  0001 C CNN
	1    2750 2000
	1    0    0    1   
$EndComp
$Comp
L Amplifier_Operational:LM358 U4
U 1 1 5F810C7D
P 3850 9000
F 0 "U4" H 3850 9367 50  0000 C CNN
F 1 "LM833N" H 3850 9276 50  0000 C CNN
F 2 "Package_DIP:DIP-8_W7.62mm_Socket_LongPads" H 3850 9000 50  0001 C CNN
F 3 "" H 3850 9000 50  0001 C CNN
	1    3850 9000
	1    0    0    -1  
$EndComp
$Comp
L Amplifier_Operational:LM358 U4
U 2 1 5F926E3F
P 8350 8700
F 0 "U4" H 8350 8333 50  0000 C CNN
F 1 "LM833N" H 8350 8424 50  0000 C CNN
F 2 "Package_DIP:DIP-8_W7.62mm_Socket_LongPads" H 8350 8700 50  0001 C CNN
F 3 "" H 8350 8700 50  0001 C CNN
	2    8350 8700
	1    0    0    1   
$EndComp
Text Notes 6450 9200 0    50   ~ 0
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 7200 8000
F 0 "C14" V 6948 8000 50  0000 C CNN
F 1 "47pF" V 7039 8000 50  0000 C CNN
F 2 "Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm" H 7238 7850 50  0001 C CNN
F 3 "~" H 7200 8000 50  0001 C CNN
	1    7200 8000
	0    1    1    0   
$EndComp
$Comp
L Device:R R18
U 1 1 5FA03CB6
P 3200 8800
F 0 "R18" V 2993 8800 50  0000 C CNN
F 1 "R" V 3084 8800 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 3130 8800 50  0001 C CNN
F 3 "~" H 3200 8800 50  0001 C CNN
	1    3200 8800
	0    1    1    0   
$EndComp
$Comp
L Device:R R21
U 1 1 5FA17C1B
P 3200 9200
F 0 "R21" V 2993 9200 50  0000 C CNN
F 1 "R" V 3084 9200 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 3130 9200 50  0001 C CNN
F 3 "~" H 3200 9200 50  0001 C CNN
	1    3200 9200
	0    1    1    0   
$EndComp
$Comp
L Device:R R17
U 1 1 5FA193EC
P 3900 8450
F 0 "R17" V 3693 8450 50  0000 C CNN
F 1 "R" V 3784 8450 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 3830 8450 50  0001 C CNN
F 3 "~" H 3900 8450 50  0001 C CNN
	1    3900 8450
	0    1    1    0   
$EndComp
$Comp
L Device:R R23
U 1 1 5FA1F9D1
P 3450 9450
F 0 "R23" H 3520 9496 50  0000 L CNN
F 1 "R" H 3520 9405 50  0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 3380 9450 50  0001 C CNN
F 3 "~" H 3450 9450 50  0001 C CNN
	1    3450 9450
	1    0    0    -1  
$EndComp
$Comp
L power:GNDREF #PWR022
U 1 1 5FA228C1
P 3450 9600
F 0 "#PWR022" H 3450 9350 50  0001 C CNN
F 1 "GNDREF" H 3455 9427 50  0000 C CNN
F 2 "" H 3450 9600 50  0001 C CNN
F 3 "" H 3450 9600 50  0001 C CNN
	1    3450 9600
	1    0    0    -1  
$EndComp
Wire Wire Line
	3350 9200 3450 9200
Wire Wire Line
	3450 9200 3450 9300
Wire Wire Line
	3450 9200 3450 9100
Wire Wire Line
	3450 9100 3550 9100
Connection ~ 3450 9200
Wire Wire Line
	3350 8800 3450 8800
Wire Wire Line
	3450 8800 3450 8900
Wire Wire Line
	3450 8900 3550 8900
Wire Wire Line
	3450 8800 3450 8450
Wire Wire Line
	3450 8450 3750 8450
Connection ~ 3450 8800
Wire Wire Line
	4050 8450 4250 8450
Wire Wire Line
	4250 8450 4250 9000
Wire Wire Line
	4250 9000 4150 9000
Wire Wire Line
	1400 8350 1400 8550
$Comp
L Device:R R10
U 1 1 5F84095A
P 1750 2500
F 0 "R10" V 1543 2500 50  0000 C CNN
F 1 "1K 1%" V 1634 2500 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 1680 2500 50  0001 C CNN
F 3 "~" H 1750 2500 50  0001 C CNN
	1    1750 2500
	0    1    1    0   
$EndComp
Wire Wire Line
	1500 2500 1600 2500
Wire Wire Line
	900  2200 900  2300
Wire Wire Line
	1500 2300 1500 2500
Text Notes 3750 9700 0    50   ~ 0
Balanced Converter\nGain: 0 dB\nTODO: use INA134?
$Comp
L Device:R R20
U 1 1 5FAA4C23
P 6600 8600
F 0 "R20" V 6393 8600 50  0000 C CNN
F 1 "47K" V 6484 8600 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 6530 8600 50  0001 C CNN
F 3 "~" H 6600 8600 50  0001 C CNN
	1    6600 8600
	0    1    1    0   
$EndComp
Wire Wire Line
	1200 1900 1500 1900
Wire Wire Line
	900  2300 1500 2300
$Comp
L Device:R R19
U 1 1 5FAC6B3E
P 7200 8400
F 0 "R19" V 6993 8400 50  0000 C CNN
F 1 "22K" V 7084 8400 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 7130 8400 50  0001 C CNN
F 3 "~" H 7200 8400 50  0001 C CNN
	1    7200 8400
	0    1    1    0   
$EndComp
$Comp
L Device:R_POT RV1
U 1 1 5FAC97E9
P 7600 8400
F 0 "RV1" V 7485 8400 50  0000 C CNN
F 1 "100K" V 7394 8400 50  0000 C CNN
F 2 "Potentiometer_THT:Potentiometer_Vishay_148-149_Single_Horizontal" H 7600 8400 50  0001 C CNN
F 3 "~" H 7600 8400 50  0001 C CNN
	1    7600 8400
	0    -1   -1   0   
$EndComp
Wire Wire Line
	6950 8400 7050 8400
Wire Wire Line
	6950 8400 6950 8000
Wire Wire Line
	6950 8000 7050 8000
Connection ~ 6950 8400
Wire Wire Line
	7600 8250 7600 8150
Wire Wire Line
	7600 8150 7700 8150
Wire Wire Line
	7700 8150 7700 8000
Wire Wire Line
	7700 8000 7350 8000
Wire Wire Line
	7350 8400 7450 8400
$Comp
L power:GNDREF #PWR020
U 1 1 5FAF156D
P 7950 9000
F 0 "#PWR020" H 7950 8750 50  0001 C CNN
F 1 "GNDREF" H 7955 8827 50  0000 C CNN
F 2 "" H 7950 9000 50  0001 C CNN
F 3 "" H 7950 9000 50  0001 C CNN
	1    7950 9000
	1    0    0    -1  
$EndComp
$Comp
L power:GNDREF #PWR021
U 1 1 5FAF1C49
P 8950 9000
F 0 "#PWR021" H 8950 8750 50  0001 C CNN
F 1 "GNDREF" H 8955 8827 50  0000 C CNN
F 2 "" H 8950 9000 50  0001 C CNN
F 3 "" H 8950 9000 50  0001 C CNN
	1    8950 9000
	1    0    0    -1  
$EndComp
$Comp
L Device:R R22
U 1 1 5FAF225E
P 8950 8750
F 0 "R22" H 9020 8796 50  0000 L CNN
F 1 "22K" H 9020 8705 50  0000 L CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 8880 8750 50  0001 C CNN
F 3 "~" H 8950 8750 50  0001 C CNN
	1    8950 8750
	1    0    0    -1  
$EndComp
Wire Wire Line
	8750 8150 8750 8500
Wire Wire Line
	8750 8700 8650 8700
Wire Wire Line
	8050 8800 7950 8800
Wire Wire Line
	7950 8800 7950 9000
Wire Wire Line
	7850 8600 7850 8700
Connection ~ 7700 8150
Wire Wire Line
	6950 8400 6950 8600
Wire Wire Line
	7350 8700 7850 8700
Connection ~ 4250 9000
Wire Wire Line
	6750 8600 6950 8600
Connection ~ 8750 8500
Wire Wire Line
	8750 8500 8750 8700
Wire Wire Line
	8950 8500 8950 8600
Wire Wire Line
	8950 8900 8950 9000
Wire Wire Line
	7350 8700 7350 8600
Wire Wire Line
	7350 8600 6950 8600
Connection ~ 6950 8600
Wire Wire Line
	4550 9100 4550 9000
Wire Wire Line
	4250 9000 4550 9000
Text GLabel 9400 8500 2    50   Output ~ 0
Stage
Wire Wire Line
	8750 8500 8950 8500
Connection ~ 8950 8500
Wire Wire Line
	8950 8500 9400 8500
$Comp
L Amplifier_Operational:LM358 U3
U 1 1 5FCC6AFD
P 2700 5300
F 0 "U3" H 2700 4933 50  0000 C CNN
F 1 "LM833N" H 2700 5024 50  0000 C CNN
F 2 "Package_DIP:DIP-8_W7.62mm_Socket_LongPads" H 2700 5300 50  0001 C CNN
F 3 "" H 2700 5300 50  0001 C CNN
	1    2700 5300
	1    0    0    1   
$EndComp
$Comp
L power:GNDREF #PWR026
U 1 1 5F93633D
P 4900 10550
F 0 "#PWR026" H 4900 10300 50  0001 C CNN
F 1 "GNDREF" H 4905 10377 50  0000 C CNN
F 2 "" H 4900 10550 50  0001 C CNN
F 3 "" H 4900 10550 50  0001 C CNN
	1    4900 10550
	1    0    0    -1  
$EndComp
$Comp
L power:GNDREF #PWR025
U 1 1 5F9381DA
P 4100 10550
F 0 "#PWR025" H 4100 10300 50  0001 C CNN
F 1 "GNDREF" H 4105 10377 50  0000 C CNN
F 2 "" H 4100 10550 50  0001 C CNN
F 3 "" H 4100 10550 50  0001 C CNN
	1    4100 10550
	1    0    0    -1  
$EndComp
$Comp
L Device:C C15
U 1 1 5F93A49E
P 4100 10400
F 0 "C15" H 3985 10354 50  0000 R CNN
F 1 "100nF" H 3985 10445 50  0000 R CNN
F 2 "Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm" H 4138 10250 50  0001 C CNN
F 3 "~" H 4100 10400 50  0001 C CNN
	1    4100 10400
	-1   0    0    1   
$EndComp
$Comp
L Device:C C16
U 1 1 5F93AE68
P 4900 10400
F 0 "C16" H 4785 10354 50  0000 R CNN
F 1 "100nF" H 4785 10445 50  0000 R CNN
F 2 "Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm" H 4938 10250 50  0001 C CNN
F 3 "~" H 4900 10400 50  0001 C CNN
	1    4900 10400
	-1   0    0    1   
$EndComp
Wire Wire Line
	4100 10150 4200 10150
Connection ~ 4100 10150
Wire Wire Line
	4100 10050 4100 10150
Wire Wire Line
	4100 10150 4100 10250
$Comp
L power:+15V #PWR024
U 1 1 5F939835
P 4900 10050
F 0 "#PWR024" H 4900 9900 50  0001 C CNN
F 1 "+15V" H 4915 10223 50  0000 C CNN
F 2 "" H 4900 10050 50  0001 C CNN
F 3 "" H 4900 10050 50  0001 C CNN
	1    4900 10050
	1    0    0    -1  
$EndComp
$Comp
L power:-15V #PWR023
U 1 1 5F938A79
P 4100 10050
F 0 "#PWR023" H 4100 10150 50  0001 C CNN
F 1 "-15V" H 4115 10223 50  0000 C CNN
F 2 "" H 4100 10050 50  0001 C CNN
F 3 "" H 4100 10050 50  0001 C CNN
	1    4100 10050
	1    0    0    -1  
$EndComp
$Comp
L Amplifier_Operational:LM358 U4
U 3 1 5F92849F
P 4500 10250
F 0 "U4" V 4175 10250 50  0000 C CNN
F 1 "LM833N" V 4266 10250 50  0000 C CNN
F 2 "Package_DIP:DIP-8_W7.62mm_Socket_LongPads" H 4500 10250 50  0001 C CNN
F 3 "" H 4500 10250 50  0001 C CNN
	3    4500 10250
	0    1    1    0   
$EndComp
$Comp
L power:GNDREF #PWR017
U 1 1 5FCF1258
P 5700 5300
F 0 "#PWR017" H 5700 5050 50  0001 C CNN
F 1 "GNDREF" H 5705 5127 50  0000 C CNN
F 2 "" H 5700 5300 50  0001 C CNN
F 3 "" H 5700 5300 50  0001 C CNN
	1    5700 5300
	1    0    0    -1  
$EndComp
$Comp
L power:GNDREF #PWR016
U 1 1 5FCF125E
P 4900 5300
F 0 "#PWR016" H 4900 5050 50  0001 C CNN
F 1 "GNDREF" H 4905 5127 50  0000 C CNN
F 2 "" H 4900 5300 50  0001 C CNN
F 3 "" H 4900 5300 50  0001 C CNN
	1    4900 5300
	1    0    0    -1  
$EndComp
$Comp
L Device:C C11
U 1 1 5FCF1264
P 4900 5150
F 0 "C11" H 4785 5104 50  0000 R CNN
F 1 "100nF" H 4785 5195 50  0000 R CNN
F 2 "Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm" H 4938 5000 50  0001 C CNN
F 3 "~" H 4900 5150 50  0001 C CNN
	1    4900 5150
	-1   0    0    1   
$EndComp
$Comp
L Device:C C12
U 1 1 5FCF126A
P 5700 5150
F 0 "C12" H 5585 5104 50  0000 R CNN
F 1 "100nF" H 5585 5195 50  0000 R CNN
F 2 "Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm" H 5738 5000 50  0001 C CNN
F 3 "~" H 5700 5150 50  0001 C CNN
	1    5700 5150
	-1   0    0    1   
$EndComp
Wire Wire Line
	4900 4900 5000 4900
Connection ~ 4900 4900
Wire Wire Line
	4900 4800 4900 4900
Wire Wire Line
	4900 4900 4900 5000
Connection ~ 5700 4900
Wire Wire Line
	5700 4900 5700 5000
Wire Wire Line
	5700 4900 5700 4800
Wire Wire Line
	5600 4900 5700 4900
$Comp
L power:+15V #PWR014
U 1 1 5FCF1278
P 5700 4800
F 0 "#PWR014" H 5700 4650 50  0001 C CNN
F 1 "+15V" H 5715 4973 50  0000 C CNN
F 2 "" H 5700 4800 50  0001 C CNN
F 3 "" H 5700 4800 50  0001 C CNN
	1    5700 4800
	1    0    0    -1  
$EndComp
$Comp
L power:-15V #PWR013
U 1 1 5FCF127E
P 4900 4800
F 0 "#PWR013" H 4900 4900 50  0001 C CNN
F 1 "-15V" H 4915 4973 50  0000 C CNN
F 2 "" H 4900 4800 50  0001 C CNN
F 3 "" H 4900 4800 50  0001 C CNN
	1    4900 4800
	1    0    0    -1  
$EndComp
$Comp
L Amplifier_Operational:LM358 U3
U 3 1 5FCF1284
P 5300 5000
F 0 "U3" V 4975 5000 50  0000 C CNN
F 1 "LM833N" V 5066 5000 50  0000 C CNN
F 2 "Package_DIP:DIP-8_W7.62mm_Socket_LongPads" H 5300 5000 50  0001 C CNN
F 3 "" H 5300 5000 50  0001 C CNN
	3    5300 5000
	0    1    1    0   
$EndComp
Text GLabel 7200 2250 2    50   Output ~ 0
Mic1
Text GLabel 1150 4800 0    50   Input ~ 0
Mic1
Text GLabel 8350 2350 0    50   Input ~ 0
Stage
$Comp
L Device:R R12
U 1 1 5FD14A6B
P 1750 4800
F 0 "R12" V 1543 4800 50  0000 C CNN
F 1 "22K" V 1634 4800 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 1680 4800 50  0001 C CNN
F 3 "~" H 1750 4800 50  0001 C CNN
	1    1750 4800
	0    1    1    0   
$EndComp
$Comp
L Device:R R14
U 1 1 5FD2515A
P 1750 5150
F 0 "R14" V 1543 5150 50  0000 C CNN
F 1 "22K" V 1634 5150 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 1680 5150 50  0001 C CNN
F 3 "~" H 1750 5150 50  0001 C CNN
	1    1750 5150
	0    1    1    0   
$EndComp
$Comp
L Device:R R16
U 1 1 5FD258D7
P 1750 5500
F 0 "R16" V 1543 5500 50  0000 C CNN
F 1 "22K" V 1634 5500 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 1680 5500 50  0001 C CNN
F 3 "~" H 1750 5500 50  0001 C CNN
	1    1750 5500
	0    1    1    0   
$EndComp
$Comp
L Device:R R13
U 1 1 5FD25F73
P 2850 4800
F 0 "R13" V 2643 4800 50  0000 C CNN
F 1 "22K" V 2734 4800 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 2780 4800 50  0001 C CNN
F 3 "~" H 2850 4800 50  0001 C CNN
	1    2850 4800
	0    1    1    0   
$EndComp
$Comp
L Device:C C10
U 1 1 5FD269DB
P 2550 4450
F 0 "C10" V 2298 4450 50  0000 C CNN
F 1 "22pF" V 2389 4450 50  0000 C CNN
F 2 "Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm" H 2588 4300 50  0001 C CNN
F 3 "~" H 2550 4450 50  0001 C CNN
	1    2550 4450
	0    1    1    0   
$EndComp
$Comp
L Device:C C13
U 1 1 5FD26AFE
P 3350 5300
F 0 "C13" V 3098 5300 50  0000 C CNN
F 1 "4.7pF" V 3189 5300 50  0000 C CNN
F 2 "Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm" H 3388 5150 50  0001 C CNN
F 3 "~" H 3350 5300 50  0001 C CNN
	1    3350 5300
	0    1    1    0   
$EndComp
$Comp
L Device:R R15
U 1 1 5FD26ECA
P 3750 5300
F 0 "R15" V 3543 5300 50  0000 C CNN
F 1 "47R" V 3634 5300 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 3680 5300 50  0001 C CNN
F 3 "~" H 3750 5300 50  0001 C CNN
	1    3750 5300
	0    1    1    0   
$EndComp
Text Notes 2700 5800 0    50   ~ 0
Summing Module\nGain: 0 dB\nIf feedback res. is variable,\ngain can be -inf to 0 dB
Wire Wire Line
	1900 4800 2000 4800
Wire Wire Line
	2000 4800 2000 5150
Wire Wire Line
	2000 5150 1900 5150
Wire Wire Line
	2000 5150 2000 5200
Wire Wire Line
	2000 5500 1900 5500
Connection ~ 2000 5150
Wire Wire Line
	2400 5200 2300 5200
Wire Wire Line
	2300 5200 2300 4800
Wire Wire Line
	2300 4800 2700 4800
Wire Wire Line
	7850 8600 8050 8600
Wire Wire Line
	7700 8150 8750 8150
$Comp
L power:GNDREF #PWR018
U 1 1 5FD7D2A6
P 2300 5600
F 0 "#PWR018" H 2300 5350 50  0001 C CNN
F 1 "GNDREF" H 2305 5427 50  0000 C CNN
F 2 "" H 2300 5600 50  0001 C CNN
F 3 "" H 2300 5600 50  0001 C CNN
	1    2300 5600
	1    0    0    -1  
$EndComp
Text Notes 13050 5300 0    50   ~ 0
Line driver\nGain: 6 dB
Wire Wire Line
	2300 4800 2300 4450
Wire Wire Line
	2300 4450 2400 4450
Connection ~ 2300 4800
Wire Wire Line
	3000 4800 3100 4800
Wire Wire Line
	3100 4800 3100 4450
Wire Wire Line
	3100 4450 2700 4450
Wire Wire Line
	3100 4800 3100 5300
Wire Wire Line
	3100 5300 3000 5300
Connection ~ 3100 4800
Connection ~ 3100 5300
Wire Wire Line
	3500 5300 3600 5300
Wire Wire Line
	3100 5300 3200 5300
Wire Wire Line
	2400 5400 2300 5400
Wire Wire Line
	2300 5400 2300 5600
Wire Wire Line
	1150 4800 1600 4800
Wire Wire Line
	2000 5200 2300 5200
Connection ~ 2000 5200
Wire Wire Line
	2000 5200 2000 5500
Connection ~ 2300 5200
Text GLabel 4350 5000 2    50   Output ~ 0
MicSum
Wire Wire Line
	4350 5000 4000 5000
Wire Wire Line
	4000 5300 3900 5300
$Comp
L power:GNDREF #PWR06
U 1 1 5FFAA880
P 11550 1450
F 0 "#PWR06" H 11550 1200 50  0001 C CNN
F 1 "GNDREF" H 11555 1277 50  0000 C CNN
F 2 "" H 11550 1450 50  0001 C CNN
F 3 "" H 11550 1450 50  0001 C CNN
	1    11550 1450
	1    0    0    -1  
$EndComp
$Comp
L power:GNDREF #PWR05
U 1 1 5FFAA886
P 10750 1450
F 0 "#PWR05" H 10750 1200 50  0001 C CNN
F 1 "GNDREF" H 10755 1277 50  0000 C CNN
F 2 "" H 10750 1450 50  0001 C CNN
F 3 "" H 10750 1450 50  0001 C CNN
	1    10750 1450
	1    0    0    -1  
$EndComp
$Comp
L Device:C C4
U 1 1 5FFAA88C
P 10750 1300
F 0 "C4" H 10635 1254 50  0000 R CNN
F 1 "100nF" H 10635 1345 50  0000 R CNN
F 2 "Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm" H 10788 1150 50  0001 C CNN
F 3 "~" H 10750 1300 50  0001 C CNN
	1    10750 1300
	-1   0    0    1   
$EndComp
$Comp
L Device:C C5
U 1 1 5FFAA892
P 11550 1300
F 0 "C5" H 11435 1254 50  0000 R CNN
F 1 "100nF" H 11435 1345 50  0000 R CNN
F 2 "Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm" H 11588 1150 50  0001 C CNN
F 3 "~" H 11550 1300 50  0001 C CNN
	1    11550 1300
	-1   0    0    1   
$EndComp
Connection ~ 11550 1050
Wire Wire Line
	11550 1050 11550 1150
Wire Wire Line
	11550 1050 11550 950 
Wire Wire Line
	11450 1050 11550 1050
$Comp
L power:+15V #PWR03
U 1 1 5FFAA8A0
P 11550 950
F 0 "#PWR03" H 11550 800 50  0001 C CNN
F 1 "+15V" H 11565 1123 50  0000 C CNN
F 2 "" H 11550 950 50  0001 C CNN
F 3 "" H 11550 950 50  0001 C CNN
	1    11550 950 
	1    0    0    -1  
$EndComp
$Comp
L power:-15V #PWR02
U 1 1 5FFAA8A6
P 10750 950
F 0 "#PWR02" H 10750 1050 50  0001 C CNN
F 1 "-15V" H 10765 1123 50  0000 C CNN
F 2 "" H 10750 950 50  0001 C CNN
F 3 "" H 10750 950 50  0001 C CNN
	1    10750 950 
	1    0    0    -1  
$EndComp
$Comp
L Amplifier_Operational:LM358 U1
U 3 1 5FFAA8AC
P 11150 1150
F 0 "U1" V 10825 1150 50  0000 C CNN
F 1 "LM833N" V 10916 1150 50  0000 C CNN
F 2 "Package_DIP:DIP-8_W7.62mm_Socket_LongPads" H 11150 1150 50  0001 C CNN
F 3 "" H 11150 1150 50  0001 C CNN
	3    11150 1150
	0    1    1    0   
$EndComp
Text GLabel 8350 1350 0    50   Input ~ 0
MicSum
Text Notes 12200 2900 0    50   ~ 0
TODO Headphone driver\nGain: TODO
Text GLabel 11650 4500 0    50   Input ~ 0
MicSum
Text GLabel 12250 2000 0    50   Input ~ 0
Head1
Text GLabel 11550 2000 2    50   Output ~ 0
Head1
$Comp
L Amplifier_Operational:LM358 U1
U 2 1 5FFF673D
P 9900 2300
F 0 "U1" H 9900 1933 50  0000 C CNN
F 1 "LM833N" H 9900 2024 50  0000 C CNN
F 2 "Package_DIP:DIP-8_W7.62mm_Socket_LongPads" H 9900 2300 50  0001 C CNN
F 3 "" H 9900 2300 50  0001 C CNN
	2    9900 2300
	1    0    0    1   
$EndComp
$Comp
L Device:R R9
U 1 1 5FFF6743
P 8950 2350
F 0 "R9" V 8743 2350 50  0000 C CNN
F 1 "22K" V 8834 2350 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 8880 2350 50  0001 C CNN
F 3 "~" H 8950 2350 50  0001 C CNN
	1    8950 2350
	0    1    1    0   
$EndComp
$Comp
L Device:R_POT R3
U 1 1 5FFF6755
P 10050 1600
F 0 "R3" V 9935 1600 50  0000 C CNN
F 1 "22K" V 9844 1600 50  0000 C CNN
F 2 "Potentiometer_THT:Potentiometer_Vishay_148-149_Single_Horizontal" V 9980 1600 50  0001 C CNN
F 3 "~" H 10050 1600 50  0001 C CNN
	1    10050 1600
	0    -1   -1   0   
$EndComp
$Comp
L Device:C C3
U 1 1 5FFF675B
P 9750 1250
F 0 "C3" V 9498 1250 50  0000 C CNN
F 1 "22pF" V 9589 1250 50  0000 C CNN
F 2 "Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm" H 9788 1100 50  0001 C CNN
F 3 "~" H 9750 1250 50  0001 C CNN
	1    9750 1250
	0    1    1    0   
$EndComp
$Comp
L Device:C C7
U 1 1 5FFF6761
P 10550 2300
F 0 "C7" V 10298 2300 50  0000 C CNN
F 1 "10nF" V 10389 2300 50  0000 C CNN
F 2 "Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm" H 10588 2150 50  0001 C CNN
F 3 "~" H 10550 2300 50  0001 C CNN
	1    10550 2300
	0    1    1    0   
$EndComp
$Comp
L Device:R R8
U 1 1 5FFF6767
P 10950 2300
F 0 "R8" V 10743 2300 50  0000 C CNN
F 1 "47R" V 10834 2300 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 10880 2300 50  0001 C CNN
F 3 "~" H 10950 2300 50  0001 C CNN
	1    10950 2300
	0    1    1    0   
$EndComp
Text Notes 9900 2800 0    50   ~ 0
Summing Module\nGain: -inf to 0 dB
Wire Wire Line
	9100 1600 9200 1600
Wire Wire Line
	9200 2350 9100 2350
Wire Wire Line
	9500 1600 9900 1600
$Comp
L power:GNDREF #PWR010
U 1 1 5FFF6777
P 9500 2600
F 0 "#PWR010" H 9500 2350 50  0001 C CNN
F 1 "GNDREF" H 9505 2427 50  0000 C CNN
F 2 "" H 9500 2600 50  0001 C CNN
F 3 "" H 9500 2600 50  0001 C CNN
	1    9500 2600
	1    0    0    -1  
$EndComp
Wire Wire Line
	9500 1600 9500 1250
Wire Wire Line
	9500 1250 9600 1250
Connection ~ 9500 1600
Wire Wire Line
	10700 2300 10800 2300
Wire Wire Line
	9600 2400 9500 2400
Wire Wire Line
	9500 2400 9500 2600
Wire Wire Line
	11550 2000 11200 2000
Wire Wire Line
	11200 2000 11200 2300
Wire Wire Line
	11200 2300 11100 2300
Wire Wire Line
	9200 1600 9200 2200
Wire Wire Line
	4000 5000 4000 5300
Wire Wire Line
	9200 2200 9200 2350
Connection ~ 9200 2200
Wire Wire Line
	9200 2200 9500 2200
Wire Wire Line
	10200 2300 10300 2300
Wire Wire Line
	10050 1450 10050 1400
Wire Wire Line
	10050 1400 10200 1400
Wire Wire Line
	9500 1600 9500 2200
Wire Wire Line
	9500 2200 9600 2200
Wire Wire Line
	10300 1400 10300 2300
Connection ~ 10300 2300
Wire Wire Line
	10300 2300 10400 2300
Wire Wire Line
	9900 1250 10200 1250
Wire Wire Line
	10200 1250 10200 1400
Connection ~ 10200 1400
Wire Wire Line
	10200 1400 10300 1400
$Comp
L Device:R_POT R4
U 1 1 6016D9DA
P 8950 1600
F 0 "R4" H 8881 1554 50  0000 R CNN
F 1 "22K" H 8881 1645 50  0000 R CNN
F 2 "Potentiometer_THT:Potentiometer_Vishay_148-149_Single_Horizontal" V 8880 1600 50  0001 C CNN
F 3 "~" H 8950 1600 50  0001 C CNN
	1    8950 1600
	1    0    0    1   
$EndComp
Wire Wire Line
	8350 2350 8800 2350
Wire Wire Line
	8950 1350 8950 1450
Wire Wire Line
	8350 1350 8950 1350
Connection ~ 9500 2200
Wire Wire Line
	1050 8150 1200 8150
Wire Wire Line
	1050 7950 1300 7950
Wire Wire Line
	1100 8050 1050 8050
$Comp
L Connector:XLR3_AudioJack3_Combo_Ground J4
U 1 1 5F81E1F3
P 1600 8050
F 0 "J4" H 1582 8367 50  0000 C CNN
F 1 "Stage Line-In" H 1582 8276 50  0000 C CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical" H 1600 8050 50  0001 C CNN
F 3 "https://www.neutrik.com/de/produkt/ncj6fa-h.pdf" H 1600 8050 50  0001 C CNN
	1    1600 8050
	1    0    0    -1  
$EndComp
Wire Wire Line
	1300 7950 1300 8050
Connection ~ 1300 8050
Wire Wire Line
	1300 8050 1300 8350
$Comp
L Connector:Conn_01x03_Male J5
U 1 1 602993B3
P 14900 9100
F 0 "J5" H 15008 9381 50  0000 C CNN
F 1 "PowerSupply" H 15008 9290 50  0000 C CNN
F 2 "TerminalBlock_MetzConnect:TerminalBlock_MetzConnect_Type073_RT02603HBLU_1x03_P5.08mm_Horizontal" H 14900 9100 50  0001 C CNN
F 3 "" H 14900 9100 50  0001 C CNN
	1    14900 9100
	1    0    0    -1  
$EndComp
$Comp
L power:GNDREF #PWR028
U 1 1 602A0CDE
P 15600 9200
F 0 "#PWR028" H 15600 8950 50  0001 C CNN
F 1 "GNDREF" H 15605 9027 50  0000 C CNN
F 2 "" H 15600 9200 50  0001 C CNN
F 3 "" H 15600 9200 50  0001 C CNN
	1    15600 9200
	1    0    0    -1  
$EndComp
$Comp
L power:+15V #PWR027
U 1 1 602B7044
P 15300 8900
F 0 "#PWR027" H 15300 8750 50  0001 C CNN
F 1 "+15V" H 15315 9073 50  0000 C CNN
F 2 "" H 15300 8900 50  0001 C CNN
F 3 "" H 15300 8900 50  0001 C CNN
	1    15300 8900
	1    0    0    -1  
$EndComp
$Comp
L power:-15V #PWR029
U 1 1 602B7D59
P 15300 9300
F 0 "#PWR029" H 15300 9400 50  0001 C CNN
F 1 "-15V" H 15315 9473 50  0000 C CNN
F 2 "" H 15300 9300 50  0001 C CNN
F 3 "" H 15300 9300 50  0001 C CNN
	1    15300 9300
	-1   0    0    1   
$EndComp
Wire Wire Line
	15100 9200 15300 9200
Wire Wire Line
	15300 9200 15300 9300
Wire Wire Line
	15100 9000 15300 9000
Wire Wire Line
	15300 9000 15300 8900
Wire Wire Line
	15600 9100 15600 9200
NoConn ~ 7750 8400
NoConn ~ 1600 5150
NoConn ~ 1600 5500
NoConn ~ 10200 1600
NoConn ~ 2750 2300
NoConn ~ 2850 2300
NoConn ~ 2750 1700
Wire Wire Line
	15100 9100 15600 9100
NoConn ~ 14900 9000
NoConn ~ 14900 9100
NoConn ~ 14900 9200
Text Notes 8150 2700 0    50   ~ 0
TODO: Try 10K or 100K poti\nwith matching feedback R
$Comp
L JBeyerstedt-Library:DRV134PA U5
U 1 1 603FAC5E
P 12750 4200
F 0 "U5" H 13550 4687 60  0000 C CNN
F 1 "DRV134PA" H 13550 4581 60  0000 C CNN
F 2 "Package_DIP:DIP-8_W7.62mm_Socket_LongPads" H 13550 4540 60  0001 C CNN
F 3 "https://www.ti.com/lit/ds/symlink/drv134.pdf" H 13550 4581 60  0001 C CNN
	1    12750 4200
	1    0    0    -1  
$EndComp
$Comp
L power:-15V #PWR0101
U 1 1 6044025E
P 12650 5050
F 0 "#PWR0101" H 12650 5150 50  0001 C CNN
F 1 "-15V" H 12665 5223 50  0000 C CNN
F 2 "" H 12650 5050 50  0001 C CNN
F 3 "" H 12650 5050 50  0001 C CNN
	1    12650 5050
	-1   0    0    1   
$EndComp
$Comp
L power:+15V #PWR0102
U 1 1 60441414
P 12650 3950
F 0 "#PWR0102" H 12650 3800 50  0001 C CNN
F 1 "+15V" H 12665 4123 50  0000 C CNN
F 2 "" H 12650 3950 50  0001 C CNN
F 3 "" H 12650 3950 50  0001 C CNN
	1    12650 3950
	1    0    0    -1  
$EndComp
$Comp
L power:GNDREF #PWR0103
U 1 1 604420CE
P 12150 4150
F 0 "#PWR0103" H 12150 3900 50  0001 C CNN
F 1 "GNDREF" H 12155 3977 50  0000 C CNN
F 2 "" H 12150 4150 50  0001 C CNN
F 3 "" H 12150 4150 50  0001 C CNN
	1    12150 4150
	1    0    0    -1  
$EndComp
$Comp
L power:GNDREF #PWR0104
U 1 1 60442CD0
P 12150 5050
F 0 "#PWR0104" H 12150 4800 50  0001 C CNN
F 1 "GNDREF" H 12155 4877 50  0000 C CNN
F 2 "" H 12150 5050 50  0001 C CNN
F 3 "" H 12150 5050 50  0001 C CNN
	1    12150 5050
	1    0    0    -1  
$EndComp
$Comp
L Device:C C18
U 1 1 60444365
P 12400 4950
F 0 "C18" V 12148 4950 50  0000 C CNN
F 1 "1uF" V 12239 4950 50  0000 C CNN
F 2 "Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm" H 12438 4800 50  0001 C CNN
F 3 "~" H 12400 4950 50  0001 C CNN
	1    12400 4950
	0    1    1    0   
$EndComp
$Comp
L Device:C C17
U 1 1 604659B0
P 12400 4050
F 0 "C17" V 12148 4050 50  0000 C CNN
F 1 "1uF" V 12239 4050 50  0000 C CNN
F 2 "Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm" H 12438 3900 50  0001 C CNN
F 3 "~" H 12400 4050 50  0001 C CNN
	1    12400 4050
	0    1    1    0   
$EndComp
$Comp
L power:GNDREF #PWR0105
U 1 1 6049ECFC
P 14450 5050
F 0 "#PWR0105" H 14450 4800 50  0001 C CNN
F 1 "GNDREF" H 14455 4877 50  0000 C CNN
F 2 "" H 14450 5050 50  0001 C CNN
F 3 "" H 14450 5050 50  0001 C CNN
	1    14450 5050
	1    0    0    -1  
$EndComp
Wire Wire Line
	14350 4950 14450 4950
Wire Wire Line
	14450 4950 14450 5050
Wire Wire Line
	15300 4800 15300 4700
Wire Wire Line
	14350 4200 14450 4200
Wire Wire Line
	14450 4200 14450 4050
Wire Wire Line
	14450 4050 14350 4050
Wire Wire Line
	14350 4500 14450 4500
Wire Wire Line
	14450 4500 14450 4650
Wire Wire Line
	14450 4650 14350 4650
Wire Wire Line
	14450 4050 14900 4050
Wire Wire Line
	14900 4050 14900 4400
Wire Wire Line
	14900 4400 15000 4400
Connection ~ 14450 4050
Wire Wire Line
	14450 4650 14900 4650
Wire Wire Line
	14900 4650 14900 4800
Wire Wire Line
	14900 4800 15300 4800
Connection ~ 14450 4650
Wire Wire Line
	11650 4500 12750 4500
Wire Wire Line
	12550 4950 12650 4950
Wire Wire Line
	12650 4950 12650 5050
Connection ~ 12650 4950
Wire Wire Line
	12650 4950 12750 4950
Wire Wire Line
	12250 4950 12150 4950
Wire Wire Line
	12150 4950 12150 5050
Wire Wire Line
	12150 4150 12150 4050
Wire Wire Line
	12150 4050 12250 4050
Wire Wire Line
	12550 4050 12650 4050
Connection ~ 12650 4050
Wire Wire Line
	12650 4050 12750 4050
Wire Wire Line
	12650 3950 12650 4050
$Comp
L JBeyerstedt-Library:INA134PA U6
U 1 1 606D5988
P 3100 6950
F 0 "U6" H 3900 7437 60  0000 C CNN
F 1 "INA134PA" H 3900 7331 60  0000 C CNN
F 2 "Package_DIP:DIP-8_W7.62mm_Socket_LongPads" H 3900 7290 60  0001 C CNN
F 3 "https://www.ti.com/lit/ds/symlink/ina134.pdf" H 3100 6750 60  0001 C CNN
	1    3100 6950
	1    0    0    -1  
$EndComp
Wire Wire Line
	4700 7150 4800 7150
Wire Wire Line
	4800 7150 4800 7400
Wire Wire Line
	4800 7400 4700 7400
$Comp
L power:-15V #PWR0106
U 1 1 606E64F7
P 4800 7800
F 0 "#PWR0106" H 4800 7900 50  0001 C CNN
F 1 "-15V" H 4815 7973 50  0000 C CNN
F 2 "" H 4800 7800 50  0001 C CNN
F 3 "" H 4800 7800 50  0001 C CNN
	1    4800 7800
	1    0    0    1   
$EndComp
$Comp
L power:+15V #PWR0107
U 1 1 606E64FD
P 4800 6700
F 0 "#PWR0107" H 4800 6550 50  0001 C CNN
F 1 "+15V" H 4815 6873 50  0000 C CNN
F 2 "" H 4800 6700 50  0001 C CNN
F 3 "" H 4800 6700 50  0001 C CNN
	1    4800 6700
	-1   0    0    -1  
$EndComp
$Comp
L power:GNDREF #PWR0108
U 1 1 606E6503
P 5300 6900
F 0 "#PWR0108" H 5300 6650 50  0001 C CNN
F 1 "GNDREF" H 5305 6727 50  0000 C CNN
F 2 "" H 5300 6900 50  0001 C CNN
F 3 "" H 5300 6900 50  0001 C CNN
	1    5300 6900
	-1   0    0    -1  
$EndComp
$Comp
L Device:C C20
U 1 1 606E650F
P 5050 7700
F 0 "C20" V 4798 7700 50  0000 C CNN
F 1 "1uF" V 4889 7700 50  0000 C CNN
F 2 "Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm" H 5088 7550 50  0001 C CNN
F 3 "~" H 5050 7700 50  0001 C CNN
	1    5050 7700
	0    -1   1    0   
$EndComp
$Comp
L Device:C C19
U 1 1 606E6515
P 5050 6800
F 0 "C19" V 4798 6800 50  0000 C CNN
F 1 "1uF" V 4889 6800 50  0000 C CNN
F 2 "Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm" H 5088 6650 50  0001 C CNN
F 3 "~" H 5050 6800 50  0001 C CNN
	1    5050 6800
	0    -1   1    0   
$EndComp
Wire Wire Line
	4900 7700 4800 7700
Wire Wire Line
	4800 7700 4800 7800
Connection ~ 4800 7700
Wire Wire Line
	4800 7700 4700 7700
Wire Wire Line
	5200 7700 5300 7700
Wire Wire Line
	5300 7700 5300 7800
Wire Wire Line
	5300 6900 5300 6800
Wire Wire Line
	5300 6800 5200 6800
Wire Wire Line
	4900 6800 4800 6800
Connection ~ 4800 6800
Wire Wire Line
	4800 6800 4700 6800
Wire Wire Line
	4800 6700 4800 6800
Connection ~ 4800 7400
$Comp
L power:GNDREF #PWR0109
U 1 1 606E6509
P 5300 7800
F 0 "#PWR0109" H 5300 7550 50  0001 C CNN
F 1 "GNDREF" H 5305 7627 50  0000 C CNN
F 2 "" H 5300 7800 50  0001 C CNN
F 3 "" H 5300 7800 50  0001 C CNN
	1    5300 7800
	-1   0    0    -1  
$EndComp
$Comp
L power:GNDREF #PWR0110
U 1 1 6073643F
P 3000 7800
F 0 "#PWR0110" H 3000 7550 50  0001 C CNN
F 1 "GNDREF" H 3005 7627 50  0000 C CNN
F 2 "" H 3000 7800 50  0001 C CNN
F 3 "" H 3000 7800 50  0001 C CNN
	1    3000 7800
	-1   0    0    -1  
$EndComp
Wire Wire Line
	3100 7700 3000 7700
Wire Wire Line
	3000 7700 3000 7800
$Comp
L power:GNDREF #PWR035
U 1 1 609E4DD0
P 14100 2700
F 0 "#PWR035" H 14100 2450 50  0001 C CNN
F 1 "GNDREF" H 14105 2527 50  0000 C CNN
F 2 "" H 14100 2700 50  0001 C CNN
F 3 "" H 14100 2700 50  0001 C CNN
	1    14100 2700
	1    0    0    -1  
$EndComp
Wire Wire Line
	14600 2000 14600 1900
Wire Wire Line
	14600 1800 15000 1800
Wire Wire Line
	15000 1900 14600 1900
Connection ~ 14600 1900
Wire Wire Line
	14600 1800 14600 1900
$Comp
L Amplifier_Operational:LM358 U1
U 1 1 60A8F329
P 5750 2250
F 0 "U1" H 5750 1883 50  0000 C CNN
F 1 "LM833N" H 5750 1974 50  0000 C CNN
F 2 "Package_DIP:DIP-8_W7.62mm_Socket_LongPads" H 5750 2250 50  0001 C CNN
F 3 "" H 5750 2250 50  0001 C CNN
	1    5750 2250
	1    0    0    1   
$EndComp
$Comp
L power:GNDREF #PWR0111
U 1 1 60BBC462
P 5350 2550
F 0 "#PWR0111" H 5350 2300 50  0001 C CNN
F 1 "GNDREF" H 5355 2377 50  0000 C CNN
F 2 "" H 5350 2550 50  0001 C CNN
F 3 "" H 5350 2550 50  0001 C CNN
	1    5350 2550
	1    0    0    -1  
$EndComp
Wire Wire Line
	5350 2150 5450 2150
Wire Wire Line
	5450 2350 5350 2350
Wire Wire Line
	5350 2350 5350 2550
Wire Wire Line
	4900 2000 5350 2000
Wire Wire Line
	5350 2000 5350 2150
$Comp
L Switch:SW_SPST_LED SW2
U 1 1 60D16A9A
P 6850 1050
F 0 "SW2" H 6850 1385 50  0000 C CNN
F 1 "OnAir_1" H 6850 1294 50  0000 C CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical" H 6850 1350 50  0001 C CNN
F 3 "~" H 6850 1350 50  0001 C CNN
	1    6850 1050
	1    0    0    -1  
$EndComp
Connection ~ 5350 2000
Connection ~ 6250 2250
Wire Wire Line
	6250 2250 7200 2250
Wire Wire Line
	6250 2250 6050 2250
NoConn ~ 6150 1550
$Comp
L Switch:SW_Push SW1
U 1 1 60D151FD
P 5800 750
F 0 "SW1" H 5800 965 50  0000 C CNN
F 1 "Mute_1" H 5800 874 50  0000 C CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical" H 5800 950 50  0001 C CNN
F 3 "~" H 5800 950 50  0001 C CNN
	1    5800 750 
	1    0    0    -1  
$EndComp
Wire Wire Line
	5350 1550 5350 2000
Wire Wire Line
	6000 1150 6000 1300
Wire Wire Line
	5750 1150 6000 1150
Wire Wire Line
	5750 1550 5850 1550
Connection ~ 5350 1550
Wire Wire Line
	5350 1150 5350 1550
Wire Wire Line
	5350 1150 5450 1150
Wire Wire Line
	5450 1550 5350 1550
$Comp
L Device:R_POT R27
U 1 1 60B0D55A
P 6000 1550
F 0 "R27" V 5885 1550 50  0000 C CNN
F 1 "25K" V 5794 1550 50  0000 C CNN
F 2 "Potentiometer_THT:Potentiometer_Vishay_148-149_Single_Horizontal" V 5930 1550 50  0001 C CNN
F 3 "~" H 6000 1550 50  0001 C CNN
	1    6000 1550
	0    -1   -1   0   
$EndComp
$Comp
L Device:R R26
U 1 1 60AAAB08
P 5600 1550
F 0 "R26" V 5393 1550 50  0000 C CNN
F 1 "120R" V 5484 1550 50  0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 5530 1550 50  0001 C CNN
F 3 "~" H 5600 1550 50  0001 C CNN
	1    5600 1550
	0    1    1    0   
$EndComp
$Comp
L Device:C C25
U 1 1 60AA92C3
P 5600 1150
F 0 "C25" V 5348 1150 50  0000 C CNN
F 1 "0.1uF" V 5439 1150 50  0000 C CNN
F 2 "Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm" H 5638 1000 50  0001 C CNN
F 3 "~" H 5600 1150 50  0001 C CNN
	1    5600 1150
	0    1    1    0   
$EndComp
Text Notes 6450 1250 0    50   ~ 0
TODO: On-Air buttons
Text Notes 8600 650  0    50   ~ 0
TODO: Rotation direction of potentiometers!\n(counter-clockwise less gain, clockwise more gain)
$Comp
L power:GNDREF #PWR036
U 1 1 5FF79FFE
P 8950 1750
F 0 "#PWR036" H 8950 1500 50  0001 C CNN
F 1 "GNDREF" H 8955 1577 50  0000 C CNN
F 2 "" H 8950 1750 50  0001 C CNN
F 3 "" H 8950 1750 50  0001 C CNN
	1    8950 1750
	1    0    0    -1  
$EndComp
$Comp
L Device:CP C21
U 1 1 5FA5AF7B
P 4750 2000
F 0 "C21" V 5005 2000 50  0000 C CNN
F 1 "10uF" V 4914 2000 50  0000 C CNN
F 2 "Capacitor_THT:CP_Radial_D10.0mm_P5.00mm" H 4788 1850 50  0001 C CNN
F 3 "~" H 4750 2000 50  0001 C CNN
	1    4750 2000
	0    -1   -1   0   
$EndComp
Wire Wire Line
	4500 2000 4600 2000
Wire Wire Line
	6250 750  6000 750 
Wire Wire Line
	5600 750  5350 750 
Wire Wire Line
	5350 750  5350 1150
Connection ~ 5350 1150
Wire Wire Line
	6250 750  6250 1300
Wire Wire Line
	6000 1300 6250 1300
Connection ~ 6000 1300
Wire Wire Line
	6000 1300 6000 1400
Connection ~ 6250 1300
Wire Wire Line
	6250 1300 6250 2250
Text Notes 10350 3200 0    50   ~ 0
Headphone gain either at mix (summing)\nor at the driver
$Comp
L Jumper:Jumper_3_Bridged12 JP2
U 1 1 5FBA61BC
P 2250 8450
F 0 "JP2" V 2296 8516 50  0000 L CNN
F 1 "Stage Cold" V 2205 8516 50  0000 L CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical" H 2250 8450 50  0001 C CNN
F 3 "~" H 2250 8450 50  0001 C CNN
	1    2250 8450
	0    1    -1   0   
$EndComp
$Comp
L Jumper:Jumper_3_Bridged12 JP1
U 1 1 5FBCEF0F
P 2250 7750
F 0 "JP1" V 2296 7816 50  0000 L CNN
F 1 "Stage Hot" V 2205 7816 50  0000 L CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical" H 2250 7750 50  0001 C CNN
F 3 "~" H 2250 7750 50  0001 C CNN
	1    2250 7750
	0    1    -1   0   
$EndComp
$Comp
L Jumper:Jumper_3_Bridged12 JP3
U 1 1 5FBCF5A3
P 6000 8600
F 0 "JP3" V 6046 8667 50  0000 L CNN
F 1 "Stage Out" V 5955 8667 50  0000 L CNN
F 2 "Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical" H 6000 8600 50  0001 C CNN
F 3 "~" H 6000 8600 50  0001 C CNN
	1    6000 8600
	0    -1   -1   0   
$EndComp
Connection ~ 1900 8050
Wire Wire Line
	2100 7750 2000 7750
Wire Wire Line
	2000 7750 2000 8050
Wire Wire Line
	2000 8050 1900 8050
Wire Wire Line
	1600 8450 2100 8450
Connection ~ 1600 8450
Wire Wire Line
	2250 7500 2250 7150
Wire Wire Line
	2250 7150 3100 7150
Wire Wire Line
	2250 8000 2800 8000
Wire Wire Line
	2800 8000 2800 8800
Wire Wire Line
	2800 8800 3050 8800
Wire Wire Line
	2250 9200 2250 8700
Wire Wire Line
	2250 9200 3050 9200
Wire Wire Line
	2250 8200 2700 8200
Wire Wire Line
	2700 8200 2700 7400
Wire Wire Line
	2700 7400 3100 7400
Wire Wire Line
	6150 8600 6450 8600
Wire Wire Line
	4800 7400 6000 7400
Wire Wire Line
	6000 7400 6000 8350
Wire Wire Line
	4550 9100 6000 9100
Wire Wire Line
	6000 9100 6000 8850
NoConn ~ 2850 1700
NoConn ~ 12250 2000
Wire Wire Line
	10750 950  10750 1050
Wire Wire Line
	10850 1050 10750 1050
Connection ~ 10750 1050
Wire Wire Line
	10750 1050 10750 1150
Wire Wire Line
	4800 10150 4900 10150
Wire Wire Line
	4900 10150 4900 10050
Wire Wire Line
	4900 10150 4900 10250
Connection ~ 4900 10150
Wire Wire Line
	2650 1700 2650 1100
Connection ~ 2650 1100
Wire Wire Line
	2650 800  2650 950 
Wire Wire Line
	2400 800  2400 950 
Wire Wire Line
	2400 950  2650 950 
Connection ~ 2650 950 
Wire Wire Line
	2650 950  2650 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
$EndSCHEMATC