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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: coupling caps to eq? posted by markC on January 29, 2004 at 19:26:14:
Well it sounds like you are trying to use the caps as high pass crossover filters. This will work, but you don't mention the input impedance of the two amps you will use. I will assume you have done the calculations correctly for that. What will you use as the low pass filter on the sub? If 4uf truely does pass 10 hz and above you will be asking the subs to play everything up to 20khz right?Why did you pick 10hz? If you are worried about DC - and you should be it is wise to run the sub signal through a cap. I remember the first time I met Carl Marchisotto and asked him what he thought of my shorting across the cap at the input of my DQ-LP1 crossover (FYI it is 2.0uf). He designed it btw. He just smiled and said, "well John, it may sound better, but you'll be asking me to recone your subs before long." It is there to block DC!
Looks like your only hole is the low pass portion of the filter to your subs. Want a quick answer on that? I once several years ago asked Jon Risch about building one for a friend's car sub amp. Do a search on JK and low pass see if you can find his kind response.
John
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Follow Ups
- Re: coupling caps to eq? - jk 12:53:38 01/30/04 (1)
- Re: coupling caps to eq? - markC 16:39:16 01/30/04 (0)
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