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High Efficiency Speaker Asylum Need speakers that can rock with just one watt? You found da place. |
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High Efficiency Speaker Asylum Need speakers that can rock with just one watt? You found da place. |
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In Reply to: RE: JBL 16 ohm dirver that measerus 6.7 posted by Paully on July 20, 2016 at 18:59:49:
Paully
The DC resistance of the voice coil you measure with a VOM will not be the same as the operational resistance of the voice coil with an AC test signal, or music for that matter. If the driver is to be horn loaded, the acoustical resistance of the horn will add to the resistance of the voice coil in actual operation. So for a horn loaded driver, round up the DC resistance to the next higher standard: i.e. 8 or 16 Ohms. Sometimes a blown voice coil will measure a very low DC resistance, with 2 or 3 Ohms for instance on a 16 Ohm driver, because the voice coil is shorted. Playing a test signal or music through this driver would likely cause it to go open and reveal that it's non operational, though the driver may revert to the shorted condition with a further DC measurement.
Hope this helps
Paul
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Follow Ups
- RE: JBL 16 ohm dirver that measerus 6.7 - Paul Eizik 06:53:46 07/21/16 (8)
- RE: "So for a horn loaded driver, round up the DC resistance to the next higher standard: i.e. 8 or 16 Ohms." - b.l.zeebub 07:50:56 07/21/16 (6)
- RE: "So for a horn loaded driver, round up the DC resistance to the next higher standard: i.e. 8 or 16 Ohms." - Paul Eizik 10:54:19 07/21/16 (0)
- RE: "So for a horn loaded driver, round up the DC resistance to the next higher standard: i.e. 8 or 16 Ohms." - Bill Fitzmaurice 10:01:58 07/21/16 (4)
- RE: "So for a horn loaded driver, round up the DC resistance to the next higher standard: i.e. 8 or 16 Ohms." - b.l.zeebub 12:17:33 07/21/16 (3)
- RE: "So for a horn loaded driver, round up the DC resistance to the next higher standard: i.e. 8 or 16 Ohms." - Bill Fitzmaurice 19:02:30 07/21/16 (2)
- RE: "So for a horn loaded driver, round up the DC resistance to the next higher standard: i.e. 8 or 16 Ohms." - b.l.zeebub 16:15:01 07/22/16 (1)
- RE: Missing Ohms…. - Paul Eizik 17:59:18 07/22/16 (0)
- RE: JBL 16 ohm dirver that measerus 6.7 - Paully 07:28:23 07/21/16 (0)
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