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DIY For Audio
Passive Filter
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<blockquote data-quote="JimGore" data-source="post: 58677" data-attributes="member: 3"><p>Hi,</p><p></p><p>I think you want to make a passive inline filter. This goes between the AVR and the sub amp. I made a passive inline filter once. It worked, but the problem I had was that it dropped the voltage too much, so the signal getting to the sub amp was way, way, way too low.</p><p></p><p>If you put the filter on the power output side of the amp, you are trying to make a passive crossover. </p><p></p><p>By the way, 3900uF is a massively huge cap. To put things into perspective, the biggest cap you can get from ClarityCap in the PX range is 100 uF. A 3900uF polyprop cap will be the size of a car battery.</p><p></p><p>Why don't you just do an active filter? It's actually quite easy to implement, even on vero board.</p><p></p><p>Regards,</p><p>Ian.</p></blockquote><p></p>
[QUOTE="JimGore, post: 58677, member: 3"] Hi, I think you want to make a passive inline filter. This goes between the AVR and the sub amp. I made a passive inline filter once. It worked, but the problem I had was that it dropped the voltage too much, so the signal getting to the sub amp was way, way, way too low. If you put the filter on the power output side of the amp, you are trying to make a passive crossover. By the way, 3900uF is a massively huge cap. To put things into perspective, the biggest cap you can get from ClarityCap in the PX range is 100 uF. A 3900uF polyprop cap will be the size of a car battery. Why don't you just do an active filter? It's actually quite easy to implement, even on vero board. Regards, Ian. [/QUOTE]
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DIY & Tutorials
DIY For Audio
Passive Filter
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