2. amps-preamps
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Calling BAT amp/preamp owner

Hello,
First of all, my set up is vk75se, vk50se, krell kav300cd, and sf grand piano. I just notice yesterday (I didn't really pay attention to this before) that my system produces quite loud popping noise(static?) from speakers when I mute or turn the volume to zero. I am wondering if my fella bat owners experience this too. I tried to pin point the problem but got some mixed results. First, I suspected a bad driver tube, because the popping noise appears on the same side as the bad tube is (I swapped tubes left to right vice versa), but when I use my Krell HTS preamp, this popping noise is not there when I mute/turn down vol to zero. Which mean the driver tube is ok. I'm confuse...
heeengky

Showing 2 responses by tenniswino

tenniswino's avatar
tenniswino
46 posts
 
I had the same problem with my 150SE/50SE set up. Not so much a problem with noise when the volume control was used but I would hear a loud "pop" from one speaker whenever the mute button was hit or a source change button was used on the preamp.

My problem was resolved by replacing a 6H30 tube in one of the power amps. Now there is no pop or audiblle noise from my system when either the mute or any of the input buttons are engaged.

It looks like you may have tried this already. But if you have any spare 6H30's available, I'd try replacing them in the 75SE and see what happens.
tenniswino's avatar
tenniswino
46 posts
 
Heeengky - Drop me an e-mail and let me know how you make out. I agree with Unsound in that I would not be very happy with BAT if I were unable to resolve the problem. For me however, the problem was resolved with a simple tube replacement. I hope you fare as well.
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