David McGown wrote:
Well, after receiving the new-to-me Nestrovic 5AS MkV RE speakers from Charlie a few weeks ago, my main DIY goal it to make sure all my amps are capable of driving them. I just received a pair of Heyboer Peerless S-265-Q output transformers this week, so working on converting the stereo EL34 Williamson amp I built a year ago (using UTC LS-55 OTs) to a Musicians Amplifier (807/KT66 UL), increasing output from 15W to just under 30W. Next project after that is my GM70 SET amp, which needs a driver upgrade for sufficient voltage swing (and current output) ensure A2 operation, thinking about a 6P5 into paralleled sections of a 5687, IT coupled to the GM70 grid. I should be able to get at least 30W with this setup). Other than that, the project pool is kind of shallow for now...more time for listening.
Can't wait to get to your house and hear the Nesties in their new home. Went by Charlie's and heard the Contrivas. Very refined.
I think you are on the right track, getting more Class A power from your power amps. One observation I had every time at Charlie's was that the Nesties craved more power. He was/is aware. Same situation with the Contrivas. Only obvious at room filling levels with lots of low frequency energy. For some reason, Class A watts always "sound" more powerful than AB. So, hopefully your amps will do your speakers justice!
Your project pool is only shallow in your mind!!! It's amazing to many of us!
Slick