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General Asylum General audio topics that don't fit into specific categories. |
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General Asylum General audio topics that don't fit into specific categories. |
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In Reply to: "More 'seamless' in response." Only on graph paper! nt posted by clarkjohnsen on May 8, 2007 at 08:44:28:
Gents:Our man clearly stated that he changed the polarity of ALL connections after the crossover. This means that there was no relative polarity change between drivers.
The only time you change the amplitude response is when you flip one (or some) drivers but keep one (or some) drivers in the original wiring. An example would be a 3rd order Butterworth 3-way, which often calls for reversal of the midrange to sum flat. If you switch the leads on the midrange ONLY, the amplitude response will change. If you switch the leads on ALL drivers, the amplitude response should not change.
Driver polarity is over-rated anyhow. 4th order Linkwitz Riley crossovers have their drivers wired with the same "polarity", but this does NOT mean the system is phase-coherent.
Most people are happy when a + voltage to the + terminal (pre-crossover) would result in forward cone motion of ALL drivers. This is great for recordings that "match up" to this convention. I think Clark's main point is that if recording polarity is typically arbitrary, then such "conventions" are not worth a lick. If that is what he means, then I concur fully.
Cheers,
Presto
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Follow Ups
- Response did not change here - only polarity did. - Presto 11:19:36 05/08/07 (1)
- Re: Presto...send me an email.... - audioexcels@yahoo.com 20:09:24 05/08/07 (0)
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