Well, I definitely was, but not now.
At least I had the other units, and had the new OP amps laatch recommended for my 3300II. So, not only did I still have stylin' gear to listen to, but also had a cool upgrade to make me feel better about the suck that was the 4000/ 700B.
Zach
At least I had the other units, and had the new OP amps laatch recommended for my 3300II. So, not only did I still have stylin' gear to listen to, but also had a cool upgrade to make me feel better about the suck that was the 4000/ 700B.
Zach
Anyway, I finally got a chance to spend some time on this again, and I've got it up and running now. Yay!
It looks like my distortion was coming from a bad connection on the back plane. I say looks like, because I changed the pre-drivers at the same time that I re-mounted all of the T03 devices- they all had silpads, and I switched to mica. One of the pre-drivers seemed a bit funny when I was doing basic resistance checks, so I bought some MJ15024to use there, knowing that d3imlay had used these with success with the 2sd555 as drivers, which I already have. Now that I've changed them out, I can't find what I thought was weird- they test fine. Odd
I still have some stuff to do, but it's working. Need to do some more rewiring, since I still have some (substantial) hum when the face plate is ungrounded. Need to install the WOPL control board. Gotta get something done with the lamps, since a few are burnt out. There's some cosmetics. etc. etc. etc.
I think I'll listen to it as is for a while. I need to switch back and forth with my PL300 II to convince myself that I really am hearing the differences that I think I'm hearing. I had expected better bass quality at higher SPL's when the 300's power supply is taxed, but was quite surprised to find how much better (tighter, more detailed) it seems even at normal levels. Maybe I'm fooling myself (all that work must be rewarded!), but at this point it sure seems real.
I had not expected that kind of difference. Tubes vs solid state? Sure, it's gonna sound much tighter. From one PL amp to another...holy wow!
~Great~ I was happily convinced that within their limits, most A/B SS amps sound more or less mostly the same. Well, maybe not.
At any rate, thanks a bunch to all who helped!
Zach
