Sorry if this isnt the right forum but it seems to be it.
My friend is going to be giving me 2 JBL loudspeakers (both tweeters are blown but the rest of the drivers are awesome) The only problem is that one of the cabinets fell off a low table face down with the sub in it. The sub doesnt move any more, but the coil produces some sound and I know its not blown. I'm wondering, can this be repaired?
Sorry if this is common, I searched a bit but didnt find much.
My friend is going to be giving me 2 JBL loudspeakers (both tweeters are blown but the rest of the drivers are awesome) The only problem is that one of the cabinets fell off a low table face down with the sub in it. The sub doesnt move any more, but the coil produces some sound and I know its not blown. I'm wondering, can this be repaired?
Sorry if this is common, I searched a bit but didnt find much.
Maybe the cone got bent, thus making the voice coil cockeyed in the gap. It wouldn't be able to move freely, or may scratch. But the magnetic field would still affect it.
Maybe?? 😕 🙁
Hey a cat dropped my Magnepans on the corner of a fireplace once....went back to the factory...the speaker...not the cat
Maybe?? 😕 🙁
Hey a cat dropped my Magnepans on the corner of a fireplace once....went back to the factory...the speaker...not the cat
Chances are the magnet has been broken from its bond and it is now pulled to one side, freezing the coil. To fix it the driver would have to be totally rebuilt, reattaching the magnet to its proper position and then reconing the driver. Find a very good recone shop to do it.
soudns expensive. guess its just going to continue beign a very heavy, big, expensive magnet/paperweight.
the conditions that it was broken struck me as odd thats all, and thought it might be as simple as a small fix. it fell about one foot onto its face but it fell perfectly onto its face and i think the air pushed the cone in backwards very hard. it didnt land sideways or anything, it landed perfectly _flat_ made a weird thud noise like it trapped air. i kinda figured that the coil was somehow immobilized by the magnet shifting i just wasnt sure / didnt understand (still dont) how it could have happened. kind of sad, those things are powerful.
so i guess the other jbl is destined to become a subwoofer.
the conditions that it was broken struck me as odd thats all, and thought it might be as simple as a small fix. it fell about one foot onto its face but it fell perfectly onto its face and i think the air pushed the cone in backwards very hard. it didnt land sideways or anything, it landed perfectly _flat_ made a weird thud noise like it trapped air. i kinda figured that the coil was somehow immobilized by the magnet shifting i just wasnt sure / didnt understand (still dont) how it could have happened. kind of sad, those things are powerful.
so i guess the other jbl is destined to become a subwoofer.
Sad story man....
I just had some very sexy Yamaha NS-890's whose 12" woofers suffered the same fate... toast, completely. So off they went to the junk heap. Fortunately, the mids and tweeters and crossovers are still good, and by amazing coincidence, they sound really good paired with Goldwood 10" $35 woofers from Parts Express.... so that's the next project... and this time, there will be no rotten foam surrounds in 10 years!
It might be a better plan to just get a replacement woofer... JBLs are easy to locate, though they are expensive... rebuilding the drivers will probably cost 70% of the cost of a new driver anyway...
Good luck, let us know what you end up doing, and how it works out for you...
I just had some very sexy Yamaha NS-890's whose 12" woofers suffered the same fate... toast, completely. So off they went to the junk heap. Fortunately, the mids and tweeters and crossovers are still good, and by amazing coincidence, they sound really good paired with Goldwood 10" $35 woofers from Parts Express.... so that's the next project... and this time, there will be no rotten foam surrounds in 10 years!
It might be a better plan to just get a replacement woofer... JBLs are easy to locate, though they are expensive... rebuilding the drivers will probably cost 70% of the cost of a new driver anyway...
Good luck, let us know what you end up doing, and how it works out for you...
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