4 Pi crossover questions [message #52463] |
Fri, 15 August 2008 12:10 ![Go to next message Go to next message](/forum/theme/AudioRoundTable/images/down.png) |
jimbop
Messages: 60 Registered: May 2009 Location: Colorado Springs, CO
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Viscount |
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In the 4 Pi crossovers, which caps have the greatest effect on the quality of the high frequencies? What brands of caps are people using in these positions? Wayne, can you explain the function of the various caps, and which caps will benefit most from upgrading from the stock components? Thanks, JD
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Re: 4 Pi crossover questions [message #52464 is a reply to message #52463] |
Fri, 15 August 2008 16:14 ![Go to previous message Go to previous message](/forum/theme/AudioRoundTable/images/up.png) ![Go to next message Go to next message](/forum/theme/AudioRoundTable/images/down.png) |
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Wayne Parham
Messages: 18756 Registered: January 2001
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Illuminati (33rd Degree) |
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Importance from most to least:C2, C3, C4, C1, C5 C2 and C3 are actually equal importance, being series capacitors. These pass the signal to the tweeter. C4 is a shunt filter cap, and it's important because it ultimately affects midwoofer response. C1 is a bypass capacitor, and only provides a tiny bit of signal at the extreme HF. C5 is part of the Zobel, which sets the load for the midwoofer crossover. This part has a very large tolerance, but if it's way off, upper midrange response is adversely affected.
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Re: 4 Pi crossover questions [message #52501 is a reply to message #52469] |
Tue, 19 August 2008 12:54 ![Go to previous message Go to previous message](/forum/theme/AudioRoundTable/images/up.png) ![Go to next message Go to previous message](/forum/theme/AudioRoundTable/images/down.png) |
Norbert
Messages: 42 Registered: May 2009
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Baron |
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I'm trying to source 20uF film caps but don't see much selection out there that don't cost an arm and leg. Aside from Dayton (PartExpress), Clarity (E-Speakers), Solen, or motor run is there any other ones I should be looking? Thanks, Norbert
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