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RE: Refining the Hafler pre-amps

thanks very helpful!

I did notice a problem a few days ago with the 101, a very concerning one.

When adjusting the bass tone control I see extreme woofer movement, and even a "thump" on one channel.

I hate to abuse the DeCapos, if I blow them I won't be able to replace them now that I am retired.

And I understand that the bass tone control carries current for other purposes in the circuit and I cannot simply bypass it.

The problem seemed to be initially corrected after DeOxit treatment, but now it is back.





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