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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: Estimate from published data... posted by Al Sekela on February 24, 2007 at 09:28:50:
The spec impedance is a nominal value over the system's frequency bandwidth & the crossover frequency is an acoustic point for the complete system. You cannot reverse-engineer without also knowing the impedance with frequency & acoustic response of all drivers as measured in the enclosure. Your calculation via Textbook learning-tool reactance formulae merely deduces -3dB electrical reactance @ fixed resistance, not with impedance that varys with frequency & certainly does not involve acoustic response. More than slightly different, you will be off by several octaves.
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- Not really - Ron Oehlert 10:55:28 02/24/07 (0)
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