D amplifier

01:46:48

I have a problem with the filter... still don't know how to filter the 0-20kHz band

published 8 years ago

thebugger

8 years ago

Try this http://everycircuit.com/circuit/6202819780804608

thebugger

8 years ago

Also, it's not a problem for the output to not be completely filtered, because a speaker is not purely resistive, and will not reproduce frequencies of above 20kHz efficiently. At frequencies higher than 20kHz a typical speaker has much higher impedance than the nominal.

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