I'm going to start this thread with a specific aim: To preserve the knowledge that Kegger freely gave our community. This thread is for posting schematics that Kegger created. He designed some very popular amps (KT-88 SEUL, for one), but he also has some lesser known designs that shouldn't...
Hi all and merry christmas!!!
I currently have an unusual custom vintage hi fi cabinet that i would love to get up and running.
Looking at the unit it seems to be a 'Main Amplifier, an AM Radio Amplifier and FM Amplifier.' Lots of valves and transformers and not built for power but detail as it...
I have a great sounding and looking little rebuilt Magnavox 8802 that really is limited by the output transformers, I also have an old pair of 30w PP transformers laying around, so I think to myself project time. I just don't know which load would be the better option. RCA says 10k for 6V6 pp...
I'm a little confused as to how to think about the phasing of the Hammond 1650HA OTs I'm using in my 6L6GC ultra-linear amp. As I understand, the dots on a transformer schematic indicate the start of the winding. But I seem to recall that how the windings are oriented towards one another can...
I don't really need another project in the queue, but I have a bunch of nifty parts in the garage and can't help myself...
I have a few nice, beefy MusicMan SS guitar amp PTs that will work well with a 4x voltage multiplier to get 395Vdc or so, with plenty of current capacity. I have a bunch...
12ax7 / 6bq5 (7189?) stereo push-pull tube amplifier / console pull.
Seems to have a half-wave solid state rectifier (two diodes).
OPTs are labelled 1221 and 9496237.
RCA and wired speaker outputs (black/red wires).
6 pin molex on chassis, and 4-pin molex on harness.
Auxillary power outlet and...
Hi,
I'm pretty new to diagnosing electronics, although I've built kits for several years.
I've been working on a Fender M-80 bass amplifier (circa 1993) which has a distorted output.
The signal is clean (in scope wave reading and audibly) through the pre-amp section, at least to the "effects...