Can speakers be repaired?

Quattroste

I had to replace the speakers in my cab because, well I guess they got blown :pac:. Anywho, can they be repaired or is the bin the place for these. They are Jensen P10r's ??

spoonbadger

Quattroste wrote: »

I had to replace the speakers in my cab because, well I guess they got blown :pac:. Anywho, can they be repaired or is the bin the place for these. They are Jensen P10r's ??

That depends. If it's damage to the paper cone,then they can be repaired.

If it's the driver/magnet that's damaged............good luck :pac:.

Hint : Next time, use higher rating speakers .

Paolo_M

Spoonbadger has is pretty much spot on.

If it's the voice coil that's damaged then, by the time you rip open the spider to get at it, re wind the coil and then re affix the spider, you'd have bought and installed a new speaker in half the time costing half as much.

Tears and rips in the cone paper can be repaired handy enough.

SB is also correct when he says the only way to damage then is by driving too much power through them.

You can double check a suspected blown speaker for sure by a. Checking the DC resistance through the coil, no read is bad news, it should be 3.2ish, 6.4ish, 12.6ish for 4, 8 and 16 ohm speaker repectivley. b. Push the speaker cone gently inwards. If it makes a rustling noise then that's the burnt coil windings grating off the magnet and you're f*ked. :mad:

PS: Is that some kinda Fender amp you have?

Quattroste

spoonbadger wrote: »

Hint : Next time, use higher rating speakers .

They were 2 x 25 watt speakers with a 7 watt Matamp. I'm not even sure how they blew. They were working one minute. Then I had to move the equipment and then they weren't working.

Paolo_M wrote: »

SB is also correct when he says the only way to damage then is by driving too much power through them.

Beats me then?

Paolo_M wrote: »

You can double check a suspected blown speaker for sure by a. Checking the DC resistance through the coil, no read is bad news, it should be 3.2ish, 6.4ish, 12.6ish for 4, 8 and 16 ohm speaker repectivley. b. Push the speaker cone gently inwards. If it makes a rustling noise then that's the burnt coil windings grating off the magnet and you're f*ked. :mad:

PS: Is that some kinda Fender amp you have?

Thanks Paolo, I'll try the gentle push test before I bin them. The cab is a Mongotone cab not Fender.

Paolo_M

In that case I'd be inclined to think that you're speakers are probably ok as this amp is unlikely to be able to blow them.

Why do you think they're blown?

Did you try the 9V battery test? Put the 9V battery terminals to the tip and sleeve of the speaker cable when it's plugged into the cab and listen for an audible pop. If it pops then everything from the amp down is ok and you need to look towards the amp for the problem.

If it fails this test it still may be the speaker cable, dodgy jack or dodgy internal wiring.
The DC resistance test should be done across the speaker(/s) terminals themselves and not the speaker cable in order to isolate the problem to just the speaker/s.

Quattroste

Yeah I did the battery test. No audible pop After that I changed out the speakers for Celestion G10 Vintage's and these worked so the wiring and amp are fine.

I only asked the question if they can be repaired as they are sitting in boxes taking up space. I guess the bin or electrical recycling place is the best for them now!