Search results

Right. The only ones I recognize as germanium are Q8 and Q9.

Thanks. Can these two be used across the board for the other TO-39 devices?

I am interested in the white oak board. I cant seem to find a schematic or a forum thread discussing the circuit. I’ve seen the photos and they are very impressive. I’ve built a few vacuum tube amps that turned out really well from designs produced by diyaudio members that were”supported“ by...

I’m rebuilding a PL14b driver board. I replaced both sets of the Q1 and Q2 with KSC1845 with excellent results [differing pinouts]. My 40327 Q5s are bad and I’m planning on using 2N3440 or 2N5414/15. Has anyone used these successfully or have another recommendation? In the Q3 and Q4...

Thanks for the explanations guys. Very interesting stuff. My background as a hobbyist is mostly with vacuum tube circuits and it just in the last year or so that I’ve become interested in “sand”. It was by necessity as my vintage pioneer SX-880 developed a bad hum. That learning curve was so...

What is meant by ”full complimentary operation”? I’ve seen that term used in regard to the WO upgrades but I’m not familiar with its meaning.

I am new to this forum. I have a new-to-me PL400, first series, 8 fin, 14B driver board, SN 8396. It has PL909 OTs in one channel and NEC 2SD555 in another. Drivers on both channels are RCA 410. I have it all cleaned up and inspected. I found the OTs all test good as do the RCA 410s. I...