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Vintage threads from the first ten years
D.I.Y. Amp Help Needed
 6/12/1999 2:05 AM |
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Aaron Flynt | D.I.Y. Amp Help Needed I just got finished putting together a homebrew single channel non-tremolo Super Reverb clone, and am running into some problems with it blowing fuses. I used a Hammond 373BX PT, with a 50 volt bias tap, and a modified star grounding scheme. I'm getting around 360 volts AC at the GZ34 , and about 500VDC coming out of it at pin 8. I'm getting .6 Amps of currrent draw at the fuse holder at idle out of the amp. The problem is that when I try to check the bias w/the OT shunt method the fuse blows. I also noticed that when all the tubes are removed except the rectifier I'm getting 500VDC after all the filter caps and on the preamp plates, too. I checked and rechecked my wiring, and everything seems right. This is my first attempt at building an amp from scratch, and any help would be appreciated. Thanks, Aaron |
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| Replies: |
| Michael The reason your plate voltage climb... -- 6/12/1999 12:16 PM tracy I've had a problem with chinese mad... -- 6/13/1999 0:44 AM anonymous Arron, |