Just finished up my sIII V6 head this weekend. Here are voltages in the same format as those posted above by jcny, just for comparison. Mine were a bit lower overall than his. Any clue why, Stephen? Amp fired up on the first go-round. Sounds great through my tweed deluxe clone cab with a ceramic Tone Tubby. Planning on new cabs in the not too distant future. An amazing variety of tones in this amp, which is exactly what I was wanting. With the 6V6s the amp can sound quite a bit like my Deluxe, and with the EL84s and the boost - WHOA! - I've always been a Fender player, but I think I may be a convert. Thanks, Stephen, for a great kit! VERY IMPRESSED!
No tubes installed, power and standby switches ON
AC Mains: 121 VAC
Rectifier tube socket: from ground to either pin 1 or pin 7: 310 VAC, across pin 1 and pin 7: 623 VAC
V1, V2, V3: across pin 4 and 9 of each tube socket: 6.92 VAC
V1, V2, V3: across pin 5 and 9 of each tube socket: 6.92 VAC
V4, V5: across pin 4 and pin 5 of each tube socket: 6.93 VAC
V6, V7: across pin 2 and pin7 of each tube socket: 6.93 VAC
Rectifier tube only:
Power on standby switches ON
B+ 401 VDC
All tubes installed:
Power and standby switches ON
“Boost “ switch should be OFF
V1: 12AX7 Pin 1: 150 VDC Pin 6: 142 VDC
V2: 12AX7 Pin 1: 166 VDC Pin 6: 249 VDC
V3: 12AX7 Pin 1: 200 VDC Pin 2: 48 VDC Pin 3: 69 VDC Pin 6: 194 VDC Pin 7: 47 VDC Pin 8: 69 VDC
V4: EL84 Pin 3: 10.5 VDC Pin 7: 328 VDC Pin 9: 313 VDC
V5: EL84 Pin 3: 10.5 VDC Pin 7: 325 VDC Pin 9: 313 VDC
V6: 6v6 Pin 5: 20 mVDC Pin 8: 20 VDC
V7: 6v6 Pin 5: 18 mVDC Pin 8: 20 VDC
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