EESchema Schematic File Version 2
LIBS:power
LIBS:device
LIBS:conn
LIBS:linear
LIBS:regul
LIBS:74xx
LIBS:cmos4000
LIBS:adc-dac
LIBS:memory
LIBS:xilinx
LIBS:special
LIBS:microcontrollers
LIBS:dsp
LIBS:microchip
LIBS:analog_switches
LIBS:motorola
LIBS:texas
LIBS:intel
LIBS:audio
LIBS:interface
LIBS:digital-audio
LIBS:philips
LIBS:display
LIBS:cypress
LIBS:siliconi
LIBS:opto
LIBS:atmel
LIBS:contrib
LIBS:valves
LIBS:transistors
LIBS:2n3906
LIBS:2n3904
LIBS:4023-cache
EELAYER 27 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 1 1
Title "4023 Filter"
Date "23 jun 2015"
Rev "1.0"
Comp "ARP"
Comment1 "François Basquin"
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
$Comp
L R R21
U 1 1 53322B80
P 5800 1200
F 0 "R21" V 5880 1200 40  0000 C CNN
F 1 "196K" V 5807 1201 40  0000 C CNN
F 2 "R3" V 5730 1200 30  0000 C CNN
F 3 "" H 5800 1200 30  0000 C CNN
	1    5800 1200
	1    0    0    -1  
$EndComp
$Comp
L R R19
U 1 1 53322B99
P 4200 2600
F 0 "R19" V 4280 2600 40  0000 C CNN
F 1 "1.87K" V 4207 2601 40  0000 C CNN
F 2 "R5" V 4130 2600 30  0000 C CNN
F 3 "" H 4200 2600 30  0000 C CNN
	1    4200 2600
	1    0    0    -1  
$EndComp
$Comp
L R R18
U 1 1 53322BA8
P 5900 2450
F 0 "R18" V 5980 2450 40  0000 C CNN
F 1 "27K" V 5907 2451 40  0000 C CNN
F 2 "R1" V 5830 2450 30  0000 C CNN
F 3 "" H 5900 2450 30  0000 C CNN
	1    5900 2450
	1    0    0    -1  
$EndComp
$Comp
L R R12
U 1 1 53322BB7
P 8800 2650
F 0 "R12" V 8880 2650 40  0000 C CNN
F 1 "2.2K" V 8807 2651 40  0000 C CNN
F 2 "R1" V 8730 2650 30  0000 C CNN
F 3 "" H 8800 2650 30  0000 C CNN
	1    8800 2650
	1    0    0    -1  
$EndComp
$Comp
L R R13
U 1 1 53322BC6
P 8800 3150
F 0 "R13" V 8880 3150 40  0000 C CNN
F 1 "33K" V 8807 3151 40  0000 C CNN
F 2 "R3" V 8730 3150 30  0000 C CNN
F 3 "" H 8800 3150 30  0000 C CNN
	1    8800 3150
	1    0    0    -1  
$EndComp
$Comp
L DIODE CR3
U 1 1 53322C60
P 5500 2400
F 0 "CR3" H 5500 2500 40  0000 C CNN
F 1 "1N4148" H 5500 2300 40  0000 C CNN
F 2 "DO-35" H 5500 2400 60  0001 C CNN
F 3 "" H 5500 2400 60  0000 C CNN
	1    5500 2400
	0    1    1    0   
$EndComp
$Comp
L DIODE CR4
U 1 1 53322CD0
P 5500 2800
F 0 "CR4" H 5500 2900 40  0000 C CNN
F 1 "1N4148" H 5500 2700 40  0000 C CNN
F 2 "DO-35" H 5500 2800 60  0001 C CNN
F 3 "" H 5500 2800 60  0000 C CNN
	1    5500 2800
	0    1    1    0   
$EndComp
$Comp
L DIODE CR5
U 1 1 53322CDE
P 5500 3200
F 0 "CR5" H 5500 3300 40  0000 C CNN
F 1 "1N4148" H 5500 3100 40  0000 C CNN
F 2 "DO-35" H 5500 3200 60  0001 C CNN
F 3 "" H 5500 3200 60  0000 C CNN
	1    5500 3200
	0    1    1    0   
$EndComp
$Comp
L R R14
U 1 1 53322E73
P 2550 2650
F 0 "R14" V 2630 2650 40  0000 C CNN
F 1 "2.2K" V 2557 2651 40  0000 C CNN
F 2 "R1" V 2480 2650 30  0000 C CNN
F 3 "" H 2550 2650 30  0000 C CNN
	1    2550 2650
	1    0    0    -1  
$EndComp
$Comp
L R R15
U 1 1 53322E95
P 2550 3150
F 0 "R15" V 2630 3150 40  0000 C CNN
F 1 "33K" V 2557 3151 40  0000 C CNN
F 2 "R3" V 2480 3150 30  0000 C CNN
F 3 "" H 2550 3150 30  0000 C CNN
	1    2550 3150
	1    0    0    -1  
$EndComp
$Comp
L R R16
U 1 1 53322EAE
P 3500 2900
F 0 "R16" V 3580 2900 40  0000 C CNN
F 1 "56K" V 3507 2901 40  0000 C CNN
F 2 "R3" V 3430 2900 30  0000 C CNN
F 3 "" H 3500 2900 30  0000 C CNN
	1    3500 2900
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR01
U 1 1 53323083
P 5900 3100
F 0 "#PWR01" H 5900 3100 30  0001 C CNN
F 1 "GND" H 5900 3030 30  0001 C CNN
F 2 "" H 5900 3100 60  0000 C CNN
F 3 "" H 5900 3100 60  0000 C CNN
	1    5900 3100
	1    0    0    -1  
$EndComp
$Comp
L LM101H Z2
U 1 1 53323448
P 4650 4900
F 0 "Z2" H 4650 4900 60  0000 C CNN
F 1 "LM301A" H 4800 4700 50  0000 C CNN
F 2 "DIP-8__300" V 4650 4900 60  0000 C CNN
F 3 "" H 4650 4900 60  0000 C CNN
	1    4650 4900
	1    0    0    -1  
$EndComp
$Comp
L C C1
U 1 1 53324BBA
P 4250 4300
F 0 "C1" H 4250 4400 40  0000 L CNN
F 1 "100pF" H 4256 4215 40  0000 L CNN
F 2 "C2" H 4288 4150 30  0001 C CNN
F 3 "" H 4250 4300 60  0000 C CNN
	1    4250 4300
	0    -1   -1   0   
$EndComp
$Comp
L 2N5172 Q7
U 1 1 552C405F
P 2650 2200
F 0 "Q7" H 2650 2052 40  0000 R CNN
F 1 "2N5172" H 2650 2350 40  0000 R CNN
F 2 "TO92-123" H 2550 2302 29  0000 C CNN
F 3 "" H 2650 2200 60  0000 C CNN
	1    2650 2200
	-1   0    0    -1  
$EndComp
$Comp
L 2N5172 Q4
U 1 1 552C408E
P 8700 2200
F 0 "Q4" H 8700 2052 40  0000 R CNN
F 1 "2N5172" H 8700 2350 40  0000 R CNN
F 2 "TO92-123" H 8600 2302 29  0000 C CNN
F 3 "" H 8700 2200 60  0000 C CNN
	1    8700 2200
	1    0    0    -1  
$EndComp
$Comp
L R R17
U 1 1 552C40DC
P 7700 2900
F 0 "R17" V 7780 2900 40  0000 C CNN
F 1 "56K" V 7707 2901 40  0000 C CNN
F 2 "R3" V 7630 2900 30  0000 C CNN
F 3 "~" H 7700 2900 30  0000 C CNN
	1    7700 2900
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR02
U 1 1 552C4146
P 8050 1400
F 0 "#PWR02" H 8050 1400 30  0001 C CNN
F 1 "GND" H 8050 1330 30  0001 C CNN
F 2 "" H 8050 1400 60  0000 C CNN
F 3 "" H 8050 1400 60  0000 C CNN
	1    8050 1400
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR03
U 1 1 552C4176
P 3200 1400
F 0 "#PWR03" H 3200 1400 30  0001 C CNN
F 1 "GND" H 3200 1330 30  0001 C CNN
F 2 "" H 3200 1400 60  0000 C CNN
F 3 "" H 3200 1400 60  0000 C CNN
	1    3200 1400
	1    0    0    -1  
$EndComp
$Comp
L CA3080E Z1
U 1 1 552C4262
P 2600 4750
F 0 "Z1" H 2600 4650 50  0000 C CNN
F 1 "CA3080E" H 2600 4850 50  0000 C CNN
F 2 "DIP-8__300" V 2600 4750 50  0000 C CNN
F 3 "DOCUMENTATION" H 2600 4750 50  0001 C CNN
	1    2600 4750
	1    0    0    -1  
$EndComp
$Comp
L 2N5459 Q1
U 1 1 552C4F27
P 3900 4750
F 0 "Q1" H 3900 4601 40  0000 R CNN
F 1 "2N5459" H 3900 4550 40  0000 R CNN
F 2 "TO92GSD" V 4000 4750 29  0000 C CNN
F 3 "" H 3900 4750 60  0000 C CNN
	1    3900 4750
	1    0    0    1   
$EndComp
$Comp
L C C2
U 1 1 552C4FCC
P 3600 5300
F 0 "C2" H 3600 5400 40  0000 L CNN
F 1 "1nF" H 3606 5215 40  0000 L CNN
F 2 "C2" H 3638 5150 30  0001 C CNN
F 3 "~" H 3600 5300 60  0000 C CNN
	1    3600 5300
	1    0    0    -1  
$EndComp
$Comp
L R R1
U 1 1 552C5091
P 1700 5400
F 0 "R1" V 1780 5400 40  0000 C CNN
F 1 "100 1%" V 1707 5401 40  0000 C CNN
F 2 "R3" V 1630 5400 30  0000 C CNN
F 3 "~" H 1700 5400 30  0000 C CNN
	1    1700 5400
	1    0    0    -1  
$EndComp
$Comp
L R R2
U 1 1 552C50A0
P 1550 5400
F 0 "R2" V 1630 5400 40  0000 C CNN
F 1 "100 1%" V 1557 5401 40  0000 C CNN
F 2 "R3" V 1480 5400 30  0000 C CNN
F 3 "~" H 1550 5400 30  0000 C CNN
	1    1550 5400
	1    0    0    -1  
$EndComp
$Comp
L R R3
U 1 1 552C50AF
P 1700 4300
F 0 "R3" V 1780 4300 40  0000 C CNN
F 1 "61K9 1%" V 1707 4301 40  0000 C CNN
F 2 "R3" V 1630 4300 30  0000 C CNN
F 3 "~" H 1700 4300 30  0000 C CNN
	1    1700 4300
	1    0    0    -1  
$EndComp
$Comp
L R R4
U 1 1 552C5280
P 4000 5350
F 0 "R4" V 4080 5350 40  0000 C CNN
F 1 "100K" V 4007 5351 40  0000 C CNN
F 2 "R3" V 3930 5350 30  0000 C CNN
F 3 "~" H 4000 5350 30  0000 C CNN
	1    4000 5350
	1    0    0    -1  
$EndComp
$Comp
L CA3080E Z3
U 1 1 552C669E
P 6850 4800
F 0 "Z3" H 6850 4700 50  0000 C CNN
F 1 "CA3080E" H 6850 4900 50  0000 C CNN
F 2 "DIP-8__300" V 6850 4800 50  0000 C CNN
F 3 "DOCUMENTATION" H 6850 4800 50  0001 C CNN
	1    6850 4800
	1    0    0    -1  
$EndComp
$Comp
L R R6
U 1 1 552C66DF
P 5850 5400
F 0 "R6" V 5930 5400 40  0000 C CNN
F 1 "100 1%" V 5857 5401 40  0000 C CNN
F 2 "R3" V 5780 5400 30  0000 C CNN
F 3 "~" H 5850 5400 30  0000 C CNN
	1    5850 5400
	1    0    0    -1  
$EndComp
$Comp
L R R5
U 1 1 552C66F1
P 6000 5400
F 0 "R5" V 6080 5400 40  0000 C CNN
F 1 "100 1%" V 6007 5401 40  0000 C CNN
F 2 "R1" V 5930 5400 30  0000 C CNN
F 3 "~" H 6000 5400 30  0000 C CNN
	1    6000 5400
	1    0    0    -1  
$EndComp
$Comp
L R R7
U 1 1 552C6DD4
P 5850 4300
F 0 "R7" V 5930 4300 40  0000 C CNN
F 1 "61K9 1%" V 5857 4301 40  0000 C CNN
F 2 "R3" V 5780 4300 30  0000 C CNN
F 3 "~" H 5850 4300 30  0000 C CNN
	1    5850 4300
	1    0    0    -1  
$EndComp
$Comp
L C C8
U 1 1 552C7927
P 4950 4500
F 0 "C8" H 4950 4600 40  0000 L CNN
F 1 "3.3pF" H 4956 4415 40  0000 L CNN
F 2 "C2" H 4988 4350 30  0001 C CNN
F 3 "~" H 4950 4500 60  0000 C CNN
	1    4950 4500
	0    1    1    0   
$EndComp
$Comp
L R R9
U 1 1 552C7AC8
P 5500 4900
F 0 "R9" V 5580 4900 40  0000 C CNN
F 1 "15K" V 5507 4901 40  0000 C CNN
F 2 "R3" V 5430 4900 30  0000 C CNN
F 3 "~" H 5500 4900 30  0000 C CNN
	1    5500 4900
	0    1    1    0   
$EndComp
$Comp
L CP C7
U 1 1 552CFA4B
P 10200 6300
F 0 "C7" H 10250 6400 40  0000 L CNN
F 1 "1µF 35V" H 10250 6200 40  0000 L CNN
F 2 "C1" V 10300 6150 30  0000 C CNN
F 3 "~" H 10200 6300 300 0000 C CNN
	1    10200 6300
	1    0    0    -1  
$EndComp
$Comp
L CP C6
U 1 1 552CFB33
P 10200 1000
F 0 "C6" H 10250 1100 40  0000 L CNN
F 1 "1µF 35V" H 10250 900 40  0000 L CNN
F 2 "C1" V 10300 850 30  0000 C CNN
F 3 "~" H 10200 1000 300 0000 C CNN
	1    10200 1000
	1    0    0    -1  
$EndComp
$Comp
L 2N5459 Q2
U 1 1 552D04BA
P 8150 4800
F 0 "Q2" H 8150 4950 40  0000 R CNN
F 1 "2N5459" H 8150 5000 40  0000 R CNN
F 2 "TO92GSD" V 8250 4800 29  0000 C CNN
F 3 "~" H 8150 4800 60  0000 C CNN
	1    8150 4800
	1    0    0    1   
$EndComp
$Comp
L C C4
U 1 1 552D054B
P 7800 5300
F 0 "C4" H 7800 5400 40  0000 L CNN
F 1 "1nF" H 7806 5215 40  0000 L CNN
F 2 "C2" H 7838 5150 30  0001 C CNN
F 3 "~" H 7800 5300 60  0000 C CNN
	1    7800 5300
	1    0    0    -1  
$EndComp
Text Notes 1100 2850 2    60   ~ 0
Balance trim
Text Notes 9850 2850 2    60   ~ 0
Balance trim
Text Notes 1050 4600 2    60   ~ 0
Audio input
Text Notes 11200 650  2    60   ~ 0
+15V
Text Notes 11100 3400 2    60   ~ 0
Gnd
Text Notes 11150 6550 2    60   ~ 0
-15V
Text Notes 5150 5550 2    60   ~ 0
Test point
Text Notes 1250 1000 2    60   ~ 0
Fc control input
Text Notes 1250 1650 2    60   ~ 0
Fc control input
Text Notes 4000 1200 2    60   Italic 12
Exponential converter\nstage 1
Text Notes 8300 1200 2    60   Italic 12
Exponential convert\nstage 2
Text Notes 2950 5350 2    60   Italic 12
Filter stage 1
Text Notes 7150 5350 2    60   Italic 12
Filter stage 2
$Comp
L LM101H Z4
U 1 1 552D85C7
P 8950 4900
F 0 "Z4" H 8950 4900 60  0000 C CNN
F 1 "LM301A" H 9100 4700 50  0000 C CNN
F 2 "DIP-8__300" V 8950 4900 60  0000 C CNN
F 3 "" H 8950 4900 60  0000 C CNN
	1    8950 4900
	1    0    0    -1  
$EndComp
$Comp
L R R8
U 1 1 552D8691
P 8250 5350
F 0 "R8" V 8330 5350 40  0000 C CNN
F 1 "100K" V 8257 5351 40  0000 C CNN
F 2 "R3" V 8180 5350 30  0000 C CNN
F 3 "~" H 8250 5350 30  0000 C CNN
	1    8250 5350
	1    0    0    -1  
$EndComp
$Comp
L R R11
U 1 1 552D86DE
P 9950 3750
F 0 "R11" V 10030 3750 40  0000 C CNN
F 1 "470" V 9957 3751 40  0000 C CNN
F 2 "R3" V 9880 3750 30  0000 C CNN
F 3 "~" H 9950 3750 30  0000 C CNN
	1    9950 3750
	0    1    1    0   
$EndComp
$Comp
L R R10
U 1 1 552D8705
P 9200 3850
F 0 "R10" V 9280 3850 40  0000 C CNN
F 1 "8K2" V 9207 3851 40  0000 C CNN
F 2 "R3" V 9130 3850 30  0000 C CNN
F 3 "~" H 9200 3850 30  0000 C CNN
	1    9200 3850
	0    1    1    0   
$EndComp
$Comp
L DIODE CR1
U 1 1 552D87C4
P 6600 3850
F 0 "CR1" H 6450 3900 40  0000 C CNN
F 1 "1N4148" H 6800 3900 40  0000 C CNN
F 2 "DO-35" H 6600 3850 60  0001 C CNN
F 3 "~" H 6600 3850 60  0000 C CNN
	1    6600 3850
	1    0    0    -1  
$EndComp
$Comp
L DIODE CR2
U 1 1 552D87D3
P 6900 3950
F 0 "CR2" H 7050 3900 40  0000 C CNN
F 1 "1N4148" H 6700 3900 40  0000 C CNN
F 2 "DO-35" H 6900 3950 60  0001 C CNN
F 3 "~" H 6900 3950 60  0000 C CNN
	1    6900 3950
	-1   0    0    -1  
$EndComp
$Comp
L C C3
U 1 1 552D8C2A
P 8550 4300
F 0 "C3" H 8350 4250 40  0000 L CNN
F 1 "100pF" H 8350 4200 40  0000 L CNN
F 2 "C2" V 8588 4150 30  0000 C CNN
F 3 "" H 8550 4300 60  0000 C CNN
	1    8550 4300
	0    -1   -1   0   
$EndComp
$Comp
L C C5
U 1 1 552D94A5
P 9250 4500
F 0 "C5" H 9250 4600 40  0000 L CNN
F 1 "3.3pF" H 9256 4415 40  0000 L CNN
F 2 "C2" V 9288 4350 30  0000 C CNN
F 3 "~" H 9250 4500 60  0000 C CNN
	1    9250 4500
	0    1    1    0   
$EndComp
Text Notes 4800 4000 0    60   ~ 0
Resonance input
$Comp
L GND #PWR04
U 1 1 552D9E3D
P 4300 4600
F 0 "#PWR04" H 4300 4600 30  0001 C CNN
F 1 "GND" H 4300 4530 30  0001 C CNN
F 2 "" H 4300 4600 60  0000 C CNN
F 3 "" H 4300 4600 60  0000 C CNN
	1    4300 4600
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR05
U 1 1 552DA10F
P 8550 4600
F 0 "#PWR05" H 8550 4600 30  0001 C CNN
F 1 "GND" H 8550 4500 30  0000 C CNN
F 2 "" H 8550 4600 60  0000 C CNN
F 3 "" H 8550 4600 60  0000 C CNN
	1    8550 4600
	1    0    0    -1  
$EndComp
$Comp
L GND #PWR06
U 1 1 552DA11E
P 10450 3600
F 0 "#PWR06" H 10450 3600 30  0001 C CNN
F 1 "GND" H 10450 3450 30  0000 C CNN
F 2 "" H 10450 3600 60  0000 C CNN
F 3 "" H 10450 3600 60  0000 C CNN
	1    10450 3600
	1    0    0    -1  
$EndComp
$Comp
L +15V #PWR07
U 1 1 552DA633
P 10450 600
F 0 "#PWR07" H 10450 550 20  0001 C CNN
F 1 "+15V" H 10450 700 30  0000 C CNN
F 2 "" H 10450 600 60  0000 C CNN
F 3 "" H 10450 600 60  0000 C CNN
	1    10450 600 
	1    0    0    -1  
$EndComp
NoConn ~ 9450 5000
NoConn ~ 5150 5000
$Comp
L R R20
U 1 1 552DB039
P 2350 1700
F 0 "R20" V 2430 1700 40  0000 C CNN
F 1 "100K" V 2357 1701 40  0000 C CNN
F 2 "R3" V 2280 1700 30  0000 C CNN
F 3 "~" H 2350 1700 30  0000 C CNN
	1    2350 1700
	0    1    1    0   
$EndComp
$Comp
L PWR_FLAG #FLG08
U 1 1 552DBF6C
P 10450 3300
F 0 "#FLG08" H 10450 3395 30  0001 C CNN
F 1 "PWR_FLAG" H 10450 3480 30  0000 C CNN
F 2 "" H 10450 3300 60  0000 C CNN
F 3 "" H 10450 3300 60  0000 C CNN
	1    10450 3300
	1    0    0    -1  
$EndComp
Text Label 7600 6600 0    60   ~ 0
-15V
Text Label 6650 3400 0    60   ~ 0
-15V
Text Label 2850 6300 0    60   ~ 0
GND
$Comp
L PWR_FLAG #FLG09
U 1 1 552E5A26
P 10750 6450
F 0 "#FLG09" H 10750 6545 30  0001 C CNN
F 1 "PWR_FLAG" H 10750 6630 30  0000 C CNN
F 2 "" H 10750 6450 60  0000 C CNN
F 3 "" H 10750 6450 60  0000 C CNN
	1    10750 6450
	1    0    0    -1  
$EndComp
$Comp
L CONN_1 P6
U 1 1 552ED6E4
P 11050 700
F 0 "P6" H 11130 700 40  0000 L CNN
F 1 "CONN_1" H 11050 755 30  0001 C CNN
F 2 "PINTST" H 10850 650 60  0000 C CNN
F 3 "" H 11050 700 60  0000 C CNN
	1    11050 700 
	1    0    0    -1  
$EndComp
$Comp
L CONN_1 P7
U 1 1 552ED6F3
P 11050 3450
F 0 "P7" H 11130 3450 40  0000 L CNN
F 1 "CONN_1" H 11050 3505 30  0001 C CNN
F 2 "PINTST" H 10850 3400 60  0000 C CNN
F 3 "" H 11050 3450 60  0000 C CNN
	1    11050 3450
	1    0    0    -1  
$EndComp
$Comp
L CONN_1 P10
U 1 1 552ED702
P 11000 4900
F 0 "P10" H 11080 4900 40  0000 L CNN
F 1 "CONN_1" H 11000 4955 30  0001 C CNN
F 2 "PINTST" H 10800 4850 60  0000 C CNN
F 3 "" H 11000 4900 60  0000 C CNN
	1    11000 4900
	1    0    0    -1  
$EndComp
$Comp
L CONN_1 P8
U 1 1 552ED711
P 11050 6600
F 0 "P8" H 11130 6600 40  0000 L CNN
F 1 "CONN_1" H 11050 6655 30  0001 C CNN
F 2 "PINTST" H 10850 6550 60  0000 C CNN
F 3 "" H 11050 6600 60  0000 C CNN
	1    11050 6600
	1    0    0    -1  
$EndComp
Text Notes 10750 4850 0    60   ~ 0
Audio out
$Comp
L CONN_1 P18
U 1 1 552EDD92
P 9650 2900
F 0 "P18" H 9730 2900 40  0000 L CNN
F 1 "CONN_1" H 9650 2955 30  0001 C CNN
F 2 "PINTST" H 9450 2850 60  0000 C CNN
F 3 "" H 9650 2900 60  0000 C CNN
	1    9650 2900
	1    0    0    -1  
$EndComp
$Comp
L CONN_1 P2
U 1 1 552EDDA1
P 4850 3850
F 0 "P2" H 4930 3850 40  0000 L CNN
F 1 "CONN_1" H 4850 3905 30  0001 C CNN
F 2 "PINTST" H 4600 3800 60  0000 C CNN
F 3 "" H 4850 3850 60  0000 C CNN
	1    4850 3850
	-1   0    0    1   
$EndComp
$Comp
L CONN_1 P9
U 1 1 552EDDBA
P 4900 5600
F 0 "P9" H 4980 5600 40  0000 L CNN
F 1 "CONN_1" H 4900 5655 30  0001 C CNN
F 2 "PINTST" H 4650 5650 60  0000 C CNN
F 3 "" H 4900 5600 60  0000 C CNN
	1    4900 5600
	-1   0    0    1   
$EndComp
$Comp
L CONN_1 P1
U 1 1 552EDDD3
P 650 4650
F 0 "P1" H 730 4650 40  0000 L CNN
F 1 "CONN_1" H 650 4705 30  0001 C CNN
F 2 "PINTST" H 400 4700 60  0000 C CNN
F 3 "" H 650 4650 60  0000 C CNN
	1    650  4650
	-1   0    0    1   
$EndComp
$Comp
L CONN_1 P14
U 1 1 552EDDE2
P 700 2900
F 0 "P14" H 780 2900 40  0000 L CNN
F 1 "CONN_1" H 700 2955 30  0001 C CNN
F 2 "PINTST" H 450 2950 60  0000 C CNN
F 3 "" H 700 2900 60  0000 C CNN
	1    700  2900
	-1   0    0    1   
$EndComp
$Comp
L CONN_1 P3
U 1 1 552EDDF1
P 700 1700
F 0 "P3" H 780 1700 40  0000 L CNN
F 1 "CONN_1" H 700 1755 30  0001 C CNN
F 2 "PINTST" H 450 1750 60  0000 C CNN
F 3 "" H 700 1700 60  0000 C CNN
	1    700  1700
	-1   0    0    1   
$EndComp
$Comp
L CONN_1 P4
U 1 1 552EDE00
P 700 1050
F 0 "P4" H 780 1050 40  0000 L CNN
F 1 "CONN_1" H 700 1105 30  0001 C CNN
F 2 "PINTST" H 450 1100 60  0000 C CNN
F 3 "" H 700 1050 60  0000 C CNN
	1    700  1050
	-1   0    0    1   
$EndComp
Text Label 7000 700  0    60   ~ 0
+15V
Text Label 4650 2200 0    60   ~ 0
Exp Converter Balance
Text Label 1200 4650 0    60   ~ 0
AudioInput
Text Label 1400 2900 0    60   ~ 0
Exp Converter 1 Trim
Text Label 8900 2900 0    60   ~ 0
Exp Converter 2 trim
Text Label 5350 3850 0    60   ~ 0
Resonance Input
Text Label 3500 3750 0    60   ~ 0
Stage 1 bias
Text Label 7700 3650 0    60   ~ 0
Stage 2 bias
Text Label 7750 4800 0    60   ~ 0
CA3080 2 out
Text Label 4600 4300 0    60   ~ 0
Stage 1 out
Text Label 9700 4900 0    60   ~ 0
Stage 2 out
Text Label 3400 4750 0    60   ~ 0
CA3080 1 out
Text Label 3650 4450 0    60   ~ 0
+15V
Text Label 3600 1050 0    60   ~ 0
Fc control input
Text Label 7850 4450 0    60   ~ 0
+15V
$Comp
L TZ581 Q6
U 1 1 53324EB2
P 3400 1550
F 0 "Q6" H 3400 1401 40  0000 R CNN
F 1 "2N3906" H 3400 1700 40  0000 R CNN
F 2 "TO92" H 3300 1652 29  0000 C CNN
F 3 "" H 3400 1550 60  0000 C CNN
	1    3400 1550
	1    0    0    1   
$EndComp
$Comp
L 2N3906 Q3
U 1 1 5578E6E4
P 7800 1550
F 0 "Q3" H 7800 1401 40  0000 R CNN
F 1 "2N3906" H 7800 1700 40  0000 R CNN
F 2 "TO92" H 7700 1652 29  0000 C CNN
F 3 "~" H 7800 1550 60  0000 C CNN
	1    7800 1550
	-1   0    0    1   
$EndComp
$Comp
L 2N3904 Q8
U 1 1 5589CC80
P 3750 1550
F 0 "Q8" H 3750 1402 40  0000 R CNN
F 1 "2N3904" H 3750 1700 40  0000 R CNN
F 2 "TO92" H 3650 1652 29  0000 C CNN
F 3 "~" H 3750 1550 60  0000 C CNN
	1    3750 1550
	-1   0    0    -1  
$EndComp
$Comp
L 2N3904 Q5
U 1 1 5589CF15
P 7450 1550
F 0 "Q5" H 7450 1402 40  0000 R CNN
F 1 "2N3904" H 7450 1700 40  0000 R CNN
F 2 "TO92" H 7350 1652 29  0000 C CNN
F 3 "~" H 7450 1550 60  0000 C CNN
	1    7450 1550
	1    0    0    -1  
$EndComp
Wire Wire Line
	2850 2200 8500 2200
Wire Wire Line
	3950 1550 7250 1550
Wire Wire Line
	4200 2350 4200 1550
Wire Wire Line
	9500 2900 8800 2900
Wire Wire Line
	8800 1850 8800 2000
Wire Wire Line
	850  2900 2550 2900
Wire Wire Line
	850  1050 4750 1050
Wire Wire Line
	4750 1050 4750 1550
Connection ~ 4750 1550
Wire Wire Line
	2550 3400 8800 3400
Connection ~ 5500 3400
Wire Wire Line
	5900 2700 5900 3100
Wire Wire Line
	2550 1900 3650 1900
Wire Wire Line
	3500 2650 3500 1750
Wire Wire Line
	7550 1850 8800 1850
Wire Wire Line
	7700 1750 7700 2650
Wire Wire Line
	8050 1300 8050 1400
Wire Wire Line
	3500 4850 3350 4850
Wire Wire Line
	3500 3150 3500 4850
Wire Wire Line
	3350 4750 3700 4750
Wire Wire Line
	1700 4550 1700 5150
Wire Wire Line
	1700 4750 1850 4750
Wire Wire Line
	800  4650 1850 4650
Connection ~ 1700 4750
Wire Wire Line
	1850 4850 1850 6600
Wire Wire Line
	4550 6600 4550 5300
Wire Wire Line
	4000 4950 4000 5100
Wire Wire Line
	4000 5000 4150 5000
Wire Wire Line
	1850 6600 10900 6600
Wire Wire Line
	5150 4500 5150 4700
Wire Wire Line
	4750 4400 5200 4400
Wire Wire Line
	5150 4800 5200 4800
Wire Wire Line
	5200 4800 5200 4400
Wire Wire Line
	5150 4900 5250 4900
Wire Wire Line
	5250 5600 5050 5600
Wire Wire Line
	5850 4550 5850 5150
Wire Wire Line
	5850 4900 5750 4900
Connection ~ 5850 4900
Wire Wire Line
	6100 4700 5850 4700
Connection ~ 5850 4700
Wire Wire Line
	6100 4800 6000 4800
Wire Wire Line
	6000 3850 6000 5150
Wire Wire Line
	6100 6600 6100 4900
Wire Wire Line
	1700 4050 9600 4050
Wire Wire Line
	5250 4300 5250 5600
Wire Wire Line
	10200 1200 10200 6100
Wire Wire Line
	4750 4400 4750 4500
Wire Wire Line
	5250 4300 4450 4300
Connection ~ 5250 4900
Wire Wire Line
	10200 6600 10200 6500
Connection ~ 10200 6600
Wire Wire Line
	4050 4300 3600 4300
Wire Wire Line
	3600 4300 3600 5100
Connection ~ 3600 4750
Wire Wire Line
	7600 4800 7950 4800
Wire Wire Line
	7800 4300 7800 5100
Connection ~ 7800 4800
Wire Wire Line
	7800 6300 7800 5500
Wire Wire Line
	2550 1900 2550 2000
Connection ~ 5900 2200
Wire Wire Line
	7600 4900 7700 4900
Wire Wire Line
	7700 4900 7700 3150
Connection ~ 5500 2200
Wire Wire Line
	5000 3850 6400 3850
Connection ~ 6000 4800
Wire Wire Line
	6400 3850 6400 3950
Wire Wire Line
	6400 3950 6700 3950
Wire Wire Line
	8250 5000 8450 5000
Wire Wire Line
	7800 4300 8350 4300
Wire Wire Line
	9450 4900 10850 4900
Wire Wire Line
	9600 3850 9600 4900
Wire Wire Line
	9600 4300 8750 4300
Wire Wire Line
	6800 3850 8950 3850
Wire Wire Line
	7100 3950 7100 3850
Connection ~ 7100 3850
Connection ~ 5850 4050
Connection ~ 9600 4300
Wire Wire Line
	9450 4700 9450 4500
Wire Wire Line
	9050 4500 9050 4400
Wire Wire Line
	9050 4400 9500 4400
Wire Wire Line
	9500 4400 9500 4800
Wire Wire Line
	9500 4800 9450 4800
Wire Wire Line
	9700 3750 8950 3750
Wire Wire Line
	8950 3750 8950 3850
Wire Wire Line
	9450 3850 9600 3850
Connection ~ 9600 4050
Connection ~ 6000 3850
Wire Wire Line
	5850 6300 5850 5650
Wire Wire Line
	6000 6300 6000 5650
Wire Wire Line
	1550 6300 7800 6300
Wire Wire Line
	5800 700  10900 700 
Wire Wire Line
	5800 1550 5800 1450
Wire Wire Line
	3600 6300 3600 5500
Connection ~ 10200 3750
Wire Wire Line
	10200 3450 10900 3450
Wire Wire Line
	10450 3300 10450 3600
Connection ~ 10200 3450
Connection ~ 10450 3450
Connection ~ 2550 2900
Wire Wire Line
	2600 1700 2850 1700
Wire Wire Line
	2850 1700 2850 1050
Connection ~ 2850 1050
Connection ~ 4550 6600
Connection ~ 6100 6600
Wire Wire Line
	1550 5150 1550 4650
Wire Wire Line
	1700 6300 1700 5650
Connection ~ 3600 6300
Connection ~ 1550 4650
Wire Wire Line
	1550 5650 1550 6300
Connection ~ 1700 6300
Connection ~ 5850 6300
Connection ~ 4000 5000
Wire Wire Line
	4000 5600 4000 6600
Connection ~ 4000 6600
Wire Wire Line
	8250 5000 8250 5100
Wire Wire Line
	8250 5600 8250 6600
Connection ~ 8250 6600
Connection ~ 6000 6300
Wire Wire Line
	850  1700 2100 1700
Wire Wire Line
	8850 5300 8850 6600
Connection ~ 8850 6600
Wire Wire Line
	10750 6600 10750 6450
Wire Wire Line
	10200 800  10200 700 
Connection ~ 9600 4900
Connection ~ 10750 6600
Wire Wire Line
	5800 700  5800 950 
Connection ~ 10200 700 
Wire Wire Line
	3200 1300 3200 1400
Wire Wire Line
	3400 3600 3400 4650
Wire Wire Line
	3400 4650 3350 4650
Wire Wire Line
	8850 4450 8850 4500
Wire Wire Line
	7350 4450 8850 4450
Wire Wire Line
	8250 4450 8250 4600
Wire Wire Line
	4550 4450 4550 4500
Wire Wire Line
	3400 4450 4550 4450
Wire Wire Line
	4000 4450 4000 4550
Connection ~ 4000 4450
Wire Wire Line
	4200 2850 4200 2950
Wire Wire Line
	4200 2950 5900 2950
Connection ~ 5900 2950
Wire Wire Line
	4150 4800 4100 4800
Wire Wire Line
	4100 4800 4100 4550
Wire Wire Line
	4100 4550 4300 4550
Wire Wire Line
	4300 4550 4300 4600
Wire Wire Line
	8450 4800 8400 4800
Wire Wire Line
	8400 4800 8400 4550
Wire Wire Line
	8400 4550 8550 4550
Wire Wire Line
	8550 4550 8550 4600
Wire Wire Line
	7750 4700 7600 4700
Wire Wire Line
	7750 4450 7750 4700
Connection ~ 8250 4450
Wire Wire Line
	10450 600  10450 700 
Connection ~ 10450 700 
Wire Wire Line
	7350 3600 7350 4450
Wire Wire Line
	3400 3600 7350 3600
Wire Wire Line
	6850 3600 6850 700 
Connection ~ 6850 700 
Connection ~ 7750 4450
Connection ~ 3400 4450
Connection ~ 6850 3600
Wire Wire Line
	3100 1900 3100 1550
Wire Wire Line
	3100 1550 3200 1550
Connection ~ 3100 1900
Wire Wire Line
	3200 1300 3650 1300
Wire Wire Line
	3500 1300 3500 1350
Wire Wire Line
	7550 1300 8050 1300
Wire Wire Line
	7700 1300 7700 1350
Wire Wire Line
	8000 1550 8150 1550
Wire Wire Line
	8150 1550 8150 1850
Wire Wire Line
	3650 1900 3650 1750
Connection ~ 4200 1550
Wire Wire Line
	3650 1300 3650 1350
Connection ~ 3500 1300
Connection ~ 5800 1550
Wire Wire Line
	7550 1300 7550 1350
Connection ~ 7700 1300
Wire Wire Line
	7550 1750 7550 1850
Connection ~ 8150 1850
$EndSCHEMATC