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3 way [message #50797] Sun, 11 March 2007 04:41 Go to next message
dB is currently offline  dB
Messages: 234
Registered: May 2009
Master
Hi Wayne,
I friend of mine (DIY Forum) is using a 3-way design with a
10"Wo-Vifa P25, a 5"Mid-Seas MCA15 (Fs=51Hz/Fsc=160Hz) and a standard Tw-Seas 27TFF.
He has the idea of bringing the xover to the 300Hz region, and I don't know if that is better, or up to the the 600/900/1K region (if voices are in the 90-1000Hz band). Upper filter in the 2K500/3KHz region. Thanks.

Crossover frequencies [message #50801 is a reply to message #50797] Sun, 11 March 2007 14:16 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18783
Registered: January 2001
Illuminati (33rd Degree)

I try to keep crossover out of the 200Hz to 2kHz range as much as possible. Since many of my two-way designs use DI matching of a direct radiator to a horn, and since this requires crossover between 1kHz and 2kHz, I compromise and crossover at 1.6kHz. I've gone as low as 1.2kHz but don't like going down further, which is why I avoid 1kHz crossovers. Similarly, with three-ways, it's very tempting to compromise the woofer-to-midrange crossover point from 200Hz up to 500Hz or 600Hz on the woofer-to-midrange point, since that makes choices for midrange drivers so much more plentiful. You can go with a smaller driver if the crossover point is moved up. Horns get way smaller if you move up in frequency. But I just don't like the sound of speakers crossed over between 500Hz and 1kHz. Seems there's no getting around it, so I prefer to keep as much of the 200Hz to 2kHz range as possible covered by a single driver.


Re: Crossover frequencies - Thanks! [message #50808 is a reply to message #50801] Sun, 11 March 2007 19:40 Go to previous message
dB is currently offline  dB
Messages: 234
Registered: May 2009
Master
Yes Wayne, that is great that we can get the felling for the behaviour of the beast.
Regards.

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