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600V 1A
SWR RED HEAD PREAMP
1n 470k 1M 3M9 470k TL072 82k +200V 390p GAIN 4k7 100p 100k 22n 470k +15V 470n passive 12AX7 + TL072 aural enhancer 50k/A 1M 1k5 -15V 22k 100n 100k 10k 56k 1N4148 X 470k
+15V +200V 12k/1W 170V~ 220V~
1N4004 830/2W 7.5 7.5
+55V
+ 100uF + 1M 100/250V 100/250V + +
from power amp supply
7.5 7.5
active
+
100 to tuner
100uF
-15V
1N4004 830/2W
-55V
+200V 10p X 1N4148 100p 22k 33k 1n 12AX7 TL072 Bass mid 68n treble 50k/B 100p 100k 22n 270k 180k + 33k TL072
*
100k/A 10p
*50k/B *
220n 1k5 470 470n 270n TL072 + 100k 22n 1k 33n TL072 + 33k 680 turbo normal
*
50k/B
*
33k
100
33n
effects send
send
3k3 1N4148 X
3k3
27k effect blend
22k 39p
100p 10k 4k7 470k/B mid freq
*
*
50k/A 22k
47k +
line-direct master double SPDT volume * toggle sw. 33k/A
470k
10k
+
100 to amp
+15V
TL072 27k TL072
1N4002
82k
effects return
100n 10k TL072 10k TL072 + 470k 33k
pwr amp clip /4 LED1 BA10339 8 14 2k2 9
+15V
+15V
+15V 33k 1M 100k LED1
preamp clip 6 1 10 3
2k2 +
10p + 4k7
1M
1k5
unbalanced out
+15V
4
X
2
BA10339 /4 8k2
13
BA10339 /4
5
7
BA10339 /4
11 12
390p
*
50k/B XLR pad
1k5
o
xlr balanced d.i. output
100k
10n
gnd lift
*