Biasing a HK A230 Ballad (stereo EL84 pairs)
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Biasing a HK A230 Ballad (stereo EL84 pairs)
 
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Mitchell Rackin
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Posted: Fri Jan 07, 2005 6:53 am    Post subject: Biasing a HK A230 Ballad (stereo EL84 pairs) Reply with quote
Can anybody tell me how to check and adjust bias on a Harmon Kardon Ballad
A230?

It's got 2 pairs of EL84's which I am putting in. There's a trim pot near
each set, which I assume is the bias control. I've only biased 6L6 based
guitar amps before so I don't know what to measure in this case. If someone
could just tell me what to measure on my multimeter, I'd appreciate it.
Thanks.

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