Originally posted by TNJ
Thanks Vaughn...I think I will have a friend of mine do the biasing tonite with the new tubes.
BTW....any idea on what differences are between the 7581 and 6L6?
S.
j
Originally posted by Mark Kane
They are loud, clear and IMO colder sounding. Probably fine for a preamp distortion amp.
Now up the bias to .060 and enjoy it even more!!! I never agreed with the super cold bias recommendatiosn of TR. No right or wrong. I'd try 30-35ma and see if you like it. My guess is you dig 32 (.064) or so.... Just a hunch.
They're measuring both at the same time? If so, definitely try .060 or even .070.
Yep. They often recommend 55ma for the pair. I always preferred more like 65-75 a pair. Especially with 7581 tubes!
I remembered that one of the guys at TR recommended .055v instead of .050v...so, right befoe shutting down, I had Jeff change it to .055. Let it sit for a minute, remeasured, and plugged in. Wow! What a difference...the punch and warmth/definition all came thundering back. Dumble overdrive city, as well. I definitely had the Larry Carlton 'Last Nite' tones!
Amazing what the bias reading can do to your tone!
S.
j