J99's make whole rack buzz
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J99's make whole rack buzz
by tazman » Thu Dec 27, 2007 11:56 am
So I went to install the 2 J99's and all of a sudden all the pres that come after them (farther from the PS) buzz and the buzzing changes as I turn the gain knob on the J99's. I tried disconnecting one J99 and then the other and either one is causing the issue. This is fast becoming a nightmare...
- tazman
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- Joined: Wed Oct 31, 2007 4:14 am
by tazman » Thu Dec 27, 2007 2:21 pm
And as I move the wire harness wires the noise changes (gets louder and quiter and the tone of the noise changes). I bought the wire harness pre built from Tim.
Only the J99's so far seem to be causing all this. A friend of mine (who has built 2 J99's) is giving me a hand. He's puzzled with the BIASing as well. BTW. With the AD797 the values move in parallell up and down so you can never get them close to each other.
Anyway, with 2 N72's all is quite, we are about to add all 4 A12's and see if they are all quite as well. If they are, then something must be uo with the J99's. Any suggestions or toughts?
Roberto
Only the J99's so far seem to be causing all this. A friend of mine (who has built 2 J99's) is giving me a hand. He's puzzled with the BIASing as well. BTW. With the AD797 the values move in parallell up and down so you can never get them close to each other.
Anyway, with 2 N72's all is quite, we are about to add all 4 A12's and see if they are all quite as well. If they are, then something must be uo with the J99's. Any suggestions or toughts?
Roberto
- tazman
- Posts: 52
- Joined: Wed Oct 31, 2007 4:14 am
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