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Old 29th April 2010, 03:57 AM   #1
suresh is offline suresh  India
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Default low pass filter and volume control pot

why polypropylene need to be smaller than electrolytic in input stage of an amplifier? basically it is a low pass filter. also how do we choose an volume control pot for an amplifier?
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Old 29th April 2010, 04:05 AM   #2
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why polypropylene need to be smaller than electrolytic in input stage of an amplifier?
It doesn't, however a 10uF poly cap is big and expencive. So you use a lower value poly cap and a higher value resistor........
Free Schematic and Service Manual downloads www.audio-circuit.dk, Spare time company (just for fun): www.dupont-audio.com
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