by gregk » Fri Mar 26, 2010 3:13 pm
I only have one word: AWESOME! It is biased (just slightly low at .98V). I waited about 10 minutes and tried biasing...well there it is, its working great! It sounds awesome, even though these speakers crappy Aiwa speakers that I used for testing. I am going to have to move it to where my better speakers are soon and give it a real test, but I am sure this is the best the Aiwa's have ever sounded.
I also wanted to note two observations I made while working on the amp with the new recto - the physical vibration in the amp is noticeably less than it was with the JJ recto (is that possible?) - I dont think its just my imagination. Secondly, with the JJ tube, both sides would have a near identical bias voltage when the bias pot was in the identical position, but now, the recto side needs to be turned a little bit higher to have the bias voltage as the other side. I am sure these things dont matter a ton, but I just noticed them, for what its worth.
I really do appreciate all the help that you all provided, hopefully I can learn more about tube gear and contribute in some small way. I definitely got to learn a lot more on this amp build, as I'd said before the S5 K-12G kit I built went perfect so I learned nothing.
(ok, that was a lot more than just one word, but still, awesome is the only word that matters right now)
thanks all!!
Greg