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I'm Mondialfan on AK.

I know you guys are PL fanatics for sure. A few years ago a friend had me rebuild his PL 700b for him and I lurked around here and read through a bunch of the PL rebuild threads, yours and others. A lot of good info there. I spent the better part of a summer working on that amp for him but it...

Yes the repeatable tests are the big thing. Having a manually operated system always sets you up for a variable that you may have introduced because you had a knob or switch set in the wrong position. You have to be very vigilent and methodical if you want to reproduce the same test every time...

> Power draw from the wall, I use a cheap little killawatt meter for this > +/- DCV both before and after the regulators > DC offset across the coupling caps > THD + N @ 2V out, 1kHz, 10kHz, & 20kHz. While performing this test I also take the opportunity to measure output voltage to make sure...

Unfortunately I didn't measure the residual prior to the upgrade work on this RL11. I have a small set of parameters I check/measure before a preamp upgrade to verify it is operating properly and residual is not one of the things that I check. Yeah I know, the final residual numbers without the...

Acurus L10 & LS11 Preamplifier performance upgrade kit R1200S told me the past week that he had posted about the Acurus kits I was offering on Ebay so curiosity got the better of me and I thought I'd check out this thread. Just a little info. The kits are designed to help those that may...