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There is likely to be an optimum bias level for each capacitor.

I've done this with cables but not crossover capacitors.

Too much bias makes the cables microphonic. I expect the same thing would be true of capacitors. You just have to experiment to find the optimum voltage.

Another trick is to isolate the batteries from the circuit with high-value resistors (say, 50K) and bypass with small caps. The battery cases are steel and will interact with the audio signal if connected directly to the circuit. Be sure the batteries are well isolated against acoustic vibration.

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  • There is likely to be an optimum bias level for each capacitor. - Al Sekela 14:02:55 01/20/10 (0)
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