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Old 19th November 2006, 01:38 AM   #1
neutron7 is offline neutron7  Canada
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Default Active notch filters

I was thinking of building some small full rangers which need a notch filter. i was going to build amplifiers in "powered monitor" style

Is there any reason not to use an active line level circuit to notch filter the audio before the power amp? It would be cheaper and can be adjusted.
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Old 19th November 2006, 10:31 AM   #2
Vikash is offline Vikash  United Kingdom
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none that I can see. I f you can do it active, do it active.
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Old 19th November 2006, 11:51 AM   #3
consort_ee_um is offline consort_ee_um  United Kingdom
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One way to do it is to use a graphic equaliser type circuit which uses a gyrator as an inductor in a series RLC circuit see this thread:
http://www.diyaudio.com/forums/showt...threadid=88123
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