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Help with JBL speaker repair - refoam gone wrong?
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<blockquote data-quote="Doxquzme" data-source="post: 8865008" data-attributes="member: 689267"><p>The more critical point is the midbass driver lead (wire). If highs are coming out of it, then it's full range. If that is the case, you don't have to test the other. Since there may be a passive (capacitor) inline with the tweeter that you cannot see, it may only produce highs even though the frequency isn't divided electronically at or before the amplifier. TO date, I've never encountered ANY manufacturer that uses a passive dividing network (crossover) on the midbass driver. This requires the use of inductor (coil) and a capacitor and it's usually right on the back of the woofer basket orin a stand alone crossover (like the ones you've seen in some of the aftermarket component sets covered in earlier post) not somewhere down the line.</p><p></p><p>[ATTACH=full]55118[/ATTACH]</p><p></p><p>[ATTACH=full]55119[/ATTACH]</p><p></p><p>Both of these could be present inline in your system, but not at all likely as they are almost always right next to the speaker driver location for performance reasons. So, once you determine if the output is full range or not, then we can determine the next course as it is solely dependant on this criteria.</p></blockquote><p></p>
[QUOTE="Doxquzme, post: 8865008, member: 689267"] The more critical point is the midbass driver lead (wire). If highs are coming out of it, then it's full range. If that is the case, you don't have to test the other. Since there may be a passive (capacitor) inline with the tweeter that you cannot see, it may only produce highs even though the frequency isn't divided electronically at or before the amplifier. TO date, I've never encountered ANY manufacturer that uses a passive dividing network (crossover) on the midbass driver. This requires the use of inductor (coil) and a capacitor and it's usually right on the back of the woofer basket orin a stand alone crossover (like the ones you've seen in some of the aftermarket component sets covered in earlier post) not somewhere down the line. [ATTACH type="full" width="550px"]55118[/ATTACH] [ATTACH type="full"]55119[/ATTACH] Both of these could be present inline in your system, but not at all likely as they are almost always right next to the speaker driver location for performance reasons. So, once you determine if the output is full range or not, then we can determine the next course as it is solely dependant on this criteria. [/QUOTE]
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Help with JBL speaker repair - refoam gone wrong?
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