In Reply to: Very interesting. May i ask you something ? posted by beppe61 on October 29, 2013 at 11:02:58:
Any second order (12 db/octave) filter, Butterworth, Linkwitz-Riley, Bessel will create an 'infinite' hole at the crossover frequency if the two drivers are hooked up with the same polarity.
If you reverse the polarity of one of the drivers, you get a 'bump' of 3 db with a Butterworth filter, a flat response with a Linkwitz-Riley. When your ears are at the same distance from each driver.
I really like the results with a second-order L-R, when the woofer and the tweeter, as well as the choice of the crossover frequency, are adequate.
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Follow Ups
- Response at the crossover frequency - Belgarchi 16:37:38 10/29/13 (5)
- RE: Response at the crossover frequency - beppe61 07:38:49 10/31/13 (2)
- RE: Response at the crossover frequency - Belgarchi 20:47:42 10/31/13 (1)
- RE: Response at the crossover frequency - beppe61 01:54:49 11/01/13 (0)
- Good point, and why I prefer LR4 - Brian H P 09:58:37 10/30/13 (1)
- RE: Good point, and why I prefer LR4 - JNS 14:41:57 11/03/13 (0)