Version 4
SHEET 1 964 680
WIRE -304 16 -384 16
WIRE -272 16 -304 16
WIRE -128 16 -192 16
WIRE -96 16 -128 16
WIRE -64 16 -96 16
WIRE 64 16 16 16
WIRE 112 16 64 16
WIRE 144 16 112 16
WIRE 272 16 224 16
WIRE 320 16 272 16
WIRE 352 16 320 16
WIRE 480 16 432 16
WIRE 576 16 480 16
WIRE 720 80 624 80
WIRE -544 112 -576 112
WIRE -432 112 -464 112
WIRE -304 112 -304 16
WIRE -272 112 -304 112
WIRE -160 112 -208 112
WIRE -96 112 -96 16
WIRE -64 112 -96 112
WIRE 32 112 0 112
WIRE 112 112 112 16
WIRE 144 112 112 112
WIRE 240 112 208 112
WIRE 320 112 320 16
WIRE 352 112 320 112
WIRE 448 112 416 112
WIRE 720 144 720 80
WIRE -576 160 -576 112
WIRE -432 160 -432 112
WIRE -384 160 -384 16
WIRE 576 160 576 16
WIRE 624 160 624 80
WIRE -272 240 -304 240
WIRE -128 240 -128 16
WIRE -128 240 -208 240
WIRE -64 240 -96 240
WIRE 64 240 64 16
WIRE 64 240 0 240
WIRE 144 240 112 240
WIRE 272 240 272 16
WIRE 272 240 208 240
WIRE 352 240 320 240
WIRE 480 240 480 16
WIRE 480 240 416 240
WIRE -576 288 -576 240
WIRE -432 288 -432 240
WIRE -432 288 -576 288
WIRE 624 288 624 240
WIRE 720 288 720 224
WIRE 720 288 624 288
WIRE -576 336 -576 288
WIRE 624 336 624 288
WIRE -384 352 -384 240
WIRE -304 352 -304 240
WIRE -304 352 -384 352
WIRE -272 352 -304 352
WIRE -160 352 -160 112
WIRE -160 352 -192 352
WIRE -96 352 -96 240
WIRE -96 352 -160 352
WIRE -64 352 -96 352
WIRE 32 352 32 112
WIRE 32 352 16 352
WIRE 112 352 112 240
WIRE 112 352 32 352
WIRE 144 352 112 352
WIRE 240 352 240 112
WIRE 240 352 224 352
WIRE 320 352 320 240
WIRE 320 352 240 352
WIRE 352 352 320 352
WIRE 448 352 448 112
WIRE 448 352 432 352
WIRE 576 352 576 240
WIRE 576 352 448 352
WIRE -384 400 -384 352
FLAG -576 336 0
FLAG -384 400 0
FLAG 624 336 0
SYMBOL voltage -576 144 R0
WINDOW 3 -109 64 Left 0
WINDOW 123 -108 98 Left 0
WINDOW 39 -143 128 Left 0
WINDOW 0 -37 26 Right 0
SYMATTR Value SINE()
SYMATTR Value2 AC 2 0
SYMATTR SpiceLine Rser=.001
SYMATTR InstName V1
SYMBOL res -560 128 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R1
SYMATTR Value 600
SYMBOL ind2 -368 256 R180
WINDOW 0 1 68 Right 0
WINDOW 3 -2 42 Right 0
SYMATTR InstName L2
SYMATTR Value 80H
SYMATTR Type ind
SYMBOL ind2 -448 144 R0
WINDOW 0 2 44 Right 0
WINDOW 3 2 69 Right 0
SYMATTR InstName L1
SYMATTR Value 3.2H
SYMATTR Type ind
SYMBOL ind -288 32 R270
WINDOW 0 33 56 VTop 0
WINDOW 3 0 57 VBottom 0
SYMATTR InstName L3
SYMATTR Value 7H
SYMBOL ind -176 336 R90
WINDOW 0 5 56 VBottom 0
WINDOW 3 35 55 VTop 0
SYMATTR InstName L4
SYMATTR Value 7
SYMBOL cap -272 128 R270
WINDOW 0 32 32 VTop 0
WINDOW 3 0 32 VBottom 0
SYMATTR InstName C1
SYMATTR Value .03µF
SYMBOL cap -208 224 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C2
SYMATTR Value .03µ
SYMBOL res 704 128 R0
SYMATTR InstName R2
SYMATTR Value 600
SYMBOL ind2 560 144 R0
WINDOW 0 1 44 Right 0
WINDOW 3 -4 68 Right 0
SYMATTR InstName L11
SYMATTR Value 80H
SYMATTR Type ind
SYMBOL ind2 640 144 M0
WINDOW 0 1 44 Right 0
WINDOW 3 0 70 Right 0
SYMATTR InstName L12
SYMATTR Value 3.2H
SYMATTR Type ind
SYMBOL ind -80 32 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 4 58 VBottom 0
SYMATTR InstName L5
SYMATTR Value 7
SYMBOL ind 32 336 R90
WINDOW 0 4 56 VBottom 0
WINDOW 3 36 55 VTop 0
SYMATTR InstName L6
SYMATTR Value 7
SYMBOL cap -64 128 R270
WINDOW 0 32 32 VTop 0
WINDOW 3 0 32 VBottom 0
SYMATTR InstName C3
SYMATTR Value .03µ
SYMBOL cap 0 224 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C4
SYMATTR Value .03µ
SYMBOL ind 128 32 R270
WINDOW 0 33 57 VTop 0
WINDOW 3 3 57 VBottom 0
SYMATTR InstName L7
SYMATTR Value 7
SYMBOL ind 240 336 R90
WINDOW 0 5 56 VBottom 0
WINDOW 3 35 56 VTop 0
SYMATTR InstName L8
SYMATTR Value 7
SYMBOL cap 144 128 R270
WINDOW 0 32 32 VTop 0
WINDOW 3 0 32 VBottom 0
SYMATTR InstName C5
SYMATTR Value .03µ
SYMBOL cap 208 224 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C6
SYMATTR Value .03µ
SYMBOL ind 336 32 R270
WINDOW 0 36 56 VTop 0
WINDOW 3 5 57 VBottom 0
SYMATTR InstName L9
SYMATTR Value 7
SYMBOL ind 448 336 R90
WINDOW 0 5 57 VBottom 0
WINDOW 3 36 55 VTop 0
SYMATTR InstName L10
SYMATTR Value 7
SYMBOL cap 352 128 R270
WINDOW 0 32 32 VTop 0
WINDOW 3 0 32 VBottom 0
SYMATTR InstName C7
SYMATTR Value .03µ
SYMBOL cap 416 224 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C8
SYMATTR Value .03µ
TEXT -496 -32 Left 0 !K1 L1 L2 .9999
TEXT -680 472 Left 0 !.ac dec 100 1 100000
TEXT 504 -32 Left 0 !K2 L11 L12 .9999
TEXT -512 24 Left 0 ;600 : 15K
TEXT 616 24 Left 0 ;15K : 600
TEXT -144 448 Left 0 ;See U. S. patent 3,060,389 by Leonard Kahn\n"Audio Signal Peak Energy Equalization"\nplaced into production as the "SymmetraPeak"