In Reply to: RE: JBL spec sheet 6.5Ω ±10% posted by b.l.zeebub on July 21, 2016 at 06:43:38:
If the horn provides an optimal-efficiency load, then the "air load" on the diaphragm will cause the impedance to be about twice the DCR, in the pass band of the driver/horn. Voice coil inductance adds a bit more, so the values are not unreasonable for the kind of horns used in pro audio. Horns that optimize audio fidelity, or pattern control, or other goals than efficiency, may not provide that much impedance.
Bottom line, the impedance you care about (for crossover matching) can only be measured with a horn attached, and are only valid for that horn.
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- RE: JBL spec sheet 6.5à ñ10% - Paul Joppa 20:36:53 07/21/16 (0)