studio4tv Posted July 24, 2009 Share Posted July 24, 2009 Hi there, I have a pair of JBL PRX 525 speakers. In two years, I have only used them for 3 gigs and about half a dozen rehearsals.Last time I used them, I discovered that the upper 15 inch speaker in one cabinet didn't seem to be working, while the lower speaker on the other cabinet wasn't working either.Is it possible that I have bought 2 faulty (brand new) cabinets ? Or is there something I could possibly be doing wrong ? Thanks in anticipation. Iain Link to comment Share on other sites More sharing options...
Killyp Posted July 24, 2009 Share Posted July 24, 2009 What do you use the speakers for, do they rattle or make any noises as you move them about, and what are you powering them with? Have they been pushed hard over extended periods at any point? Link to comment Share on other sites More sharing options...
KevinE Posted July 24, 2009 Share Posted July 24, 2009 How competent with electronics are you? what are you powering them withThe PRX525 are a self-powered speaker with 'Crown' switching amp, though they're designed by Crown and made by Harman. I've had samples of the PRX range with faulty IDC crimped ribbon cables which interconnect the power stage to the DSP stage. If you're ok making these cables, this might be a cure. The PRX amps arent for the faint-hearted and the boards look like they've come out of a mobile phone. Link to comment Share on other sites More sharing options...
studio4tv Posted July 26, 2009 Author Share Posted July 26, 2009 What do you use the speakers for, do they rattle or make any noises as you move them about, and what are you powering them with? Have they been pushed hard over extended periods at any point? Thank you, They are self powered cabinets and there is no rattling or anything. They have never been pushed hard. Thanks. A concurrent post has been automatically merged from this point on. How competent with electronics are you? what are you powering them withThe PRX525 are a self-powered speaker with 'Crown' switching amp, though they're designed by Crown and made by Harman. I've had samples of the PRX range with faulty IDC crimped ribbon cables which interconnect the power stage to the DSP stage. If you're ok making these cables, this might be a cure. The PRX amps arent for the faint-hearted and the boards look like they've come out of a mobile phone. Thanks. I have no knowlege of electronics, so I dare not even open the cabinets. I guess I should find an engineer. Thank you. Link to comment Share on other sites More sharing options...
Killyp Posted July 26, 2009 Share Posted July 26, 2009 That'll teach me to use Google :P It may be simpler for you to talk directly to JBL. With some DSP-based electronics, engineers seem to increasingly be sending items for repair directly off to the manufacturer for repair, and adding in a 'middle-man' charge. Not that this always happens, but it seems pretty common... JBL may recommend an 'authorised' repair center... Link to comment Share on other sites More sharing options...
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