Quote:
Originally Posted by MartyStrat54
Well, you could send me back the 12BZ7 and I have a bunch of Westinghouse 12BZ7. It's too late for me to try and return the Raytheon, but I'll contact the seller just in case he's a nice guy. The 12BZ7 is ruining the experiment, because it's no good. It's one of those, "It tested good, but it's no good," tubes. It tested strong on my tube tester, but the tester can't test for microphonics. You have to stick them in an amp to see if they are okay. You did and it's a screamer, ringer and a real frickin' nightmare! 
If I can get around to it, I will send you a Westinghouse 12BZ7. If it does the same thing, then we have solved that equation. If it kicks as, then we corrected our test pool of tubes.
Marty    |
I concur. A good comparison would be another 12BZ7. I'd say if that doesn't work either... Then my amp probably just doesn't like those specs. But if it does... We could have a whole new basis for experimentation. Plus, if you were of a mind to, you could try this tube in one of your amps and see if it does the same thing...
At any rate, so far I am just having fun playing around with it. For now I'll continue to play with what I've got, and if you know of another test subject (... and it's not too pricey...), then we'll have a go at it. Fun.