Version 4
SHEET 1 880 680
WIRE -304 -80 -368 -80
WIRE -208 -80 -240 -80
WIRE -496 -32 -576 -32
WIRE -144 -32 -144 -80
WIRE -144 -32 -160 -32
WIRE -400 48 -400 16
WIRE -304 48 -400 48
WIRE -576 80 -576 48
WIRE -400 80 -400 48
WIRE -304 96 -304 48
WIRE -400 208 -400 160
WIRE -304 208 -304 160
WIRE -304 208 -400 208
WIRE -400 224 -400 208
FLAG -576 80 0
FLAG -400 224 0
FLAG -208 0 0
SYMBOL voltage -576 -48 R0
WINDOW 0 -165 -3 Left 2
WINDOW 3 -181 106 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName .1V.AC.RMS.1000Hz
SYMATTR Value SINE(0 .28 1000)
SYMBOL triode -368 -32 R0
WINDOW 0 -70 -59 Left 2
WINDOW 3 61 -16 Invisible 2
WINDOW 38 41 42 Left 2
SYMATTR InstName V1A
SYMATTR Value ""
SYMATTR SpiceModel 12AY7
SYMBOL res -416 64 R0
SYMATTR InstName R3
SYMATTR Value 1.5K
SYMBOL cap -320 96 R0
SYMATTR InstName C1
SYMATTR Value 25µ
SYMBOL res -400 -48 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 33K
SYMBOL res -480 64 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R1
SYMATTR Value 1m
SYMBOL res -384 -176 R0
SYMATTR InstName R4
SYMBOL res -48 -48 R90
WINDOW 0 -1 65 VBottom 2
WINDOW 3 -28 18 VTop 2
SYMATTR InstName R5
SYMATTR Value 270K
SYMBOL cap -240 -96 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value .022µ
SYMBOL potentiometer_standard -224 -96 R0
WINDOW 39 53 158 Left 2
WINDOW 0 160 96 Left 2
WINDOW 3 53 124 Left 2
WINDOW 38 50 94 Left 2
SYMATTR SpiceLine Rtap=100k tap=0.5
SYMATTR InstName P1
SYMATTR Value Rtot=1M wiper={VOL}
SYMATTR SpiceModel pot_pow
SYMBOL cap -144 -96 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C3
SYMATTR Value 100p
TEXT -792 312 Left 2 !.MODEL 1N4007 D(Rs=0.010 Tt=2u Cjo=15p Vj=0.6 BV=1000 Ibv=5u)
TEXT -792 336 Left 2 !.tran 0 7s 0s .1s startup
TEXT -840 -208 Left 4 ;Bassman Micro Tube Guitar Amp
TEXT -840 120 Left 2 ;.1V AC RMS = .28V Peak
TEXT -32 352 Right 1 ;By Rob Robinette