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Old 9th November 2009, 08:23 PM   #1
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Default Way to adjust Acoustat Bias Voltage?

I have had a pair of Acoustat Spectra 3's for about 2 years now. They are in original condition. I have noticed that one speaker is slightly louder than the other, like 2 dB. I checked the grid voltage, and the quiet one reads 4500volts, and the loud one reads 6500volts. Is there a way to 'adjust the bias' to make them the same? Reading was taken off Red wire 5kv, (see schematic)

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Old 10th November 2009, 12:12 AM   #2
Atom666 is offline Atom666  Canada
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Acoustat, Andy Szabo's Technical bulletins Ultrasonic Bias Supply
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