Spectra 11, Dull output from ESL output

Read more on the Acoustat Spectra 11 in our home audio section

Michael Kelley2017-04-29 15:15

I'm seeking assistance for my specta 11 loud speakers. I have one panel that sounds very dull and one panel that sounds normal. I suspect the bias circuit is malfunctioning. These units do not have the bias circuit update. Any information in getting these speakers updated to the new bias circuit would be greatly appreciated.

Note: swapped power supplies and boards back and fourth from one speaker to another and determined that the board was causing the issue.


Acoustatanswerman2017-11-04 22:35

I can supply you with instructions on modifying the bias circuit and measuring/adjusting the bias voltage. Since there's no way to post documents here, please contact me at andyszabo@cox.net.

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