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Old 6th February 2013, 08:57 AM   #1
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Default Forte 1a

Im just about to acquire two 1A amps, both working. however Im told that one of them has a transformer buzz. I won't pretend to be an expert on circuit design but i can solder and I read an earlier thread re a 4a that had the same problem which was solved by replaced some caps and bridge rectifiers. Any comments would be very welcome..
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Old 6th February 2013, 12:01 PM   #2
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get them , post pics and then we'll see what's happening
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Old 11th February 2013, 10:37 PM   #3
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I have tried both amps. The buzz on the transformer turns out to be very mild. I did check the bias - one side much higher than the other 80mv / 130mv, after adjusting both around the 130mv now ( awful biasing pots ) and heat not too bad, you can hold your hand on the heat sinks..

Sound great with Yamaha NS1000 s , no grain or glare, powerful solid bass. Id like to link the inputs and Bi amp - any issues here ?
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Old 11th February 2013, 11:01 PM   #4
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no issues

regarding crappy pots - replace them

use multiturns , with adequate setting screw position
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