Tyrael6666

I'm not the greatest when it comes to subwoofers and car audio, so excause this question if its just dumb. Is there any way to repair a blown subwoofer? My friend somehow fried a 250 dollar power acoustik, so he gave it to me for free and said its mine if I can fix it. So I figured I would ask if such a thing is possible.

1985_RX-7

Hmmm, dunno if you can but try to send it to the mfg, and see if they can fix it or give you a new one...

Tyrael6666

hmm Maybe Ill just call them and say I lost the recipet but it reacted like this after being mated to a relatively weak sony amp and try making it seem like it was a defect lol. I doubt it'll work but its worth a try I guess.

HKS7fanatic

if you have an audio repair shop there, take it to them. i have one here in town and i did the same thing before when i had a blown sub. it relaly depends on whats wrong w/ the sub. if the voice coil is frozen then you might as well have fun trashing the thing. but that may be the easier thing for u to do then go from there.

Tyrael6666

Is there any way to determine if the voice coil is frozen before hand? Like would I be able to check the movment of the cone up and down by pushing to determine rigidity, to give me some kind of clue as to whether its frozen or not. When I push down the cone it seems to go down and back up rather normally, a lot like my sonys which are in perfect shape do, not too hard, not too soft. I'm just hoping this thing is fixable cause it is HUGE and would be so awsome.

mb7

Check and see if the cone is just ripped apart from the voice coil or if the surround is broken. These can be repaired. If the voice coil will not move at all its prob melted to gether or frozen then you are SOL

Tyrael6666

Nothing is ripped, and the voice coil moves up and down freely. I can put pressure on the cone, or immediatly on the coil and it will flex in and back out. I can also push the underside of the cone up and the voil coil rises freely with the cone.

mb7

hmm, Whats it sound like

DamonB

When speakers are "blown" it very rarely causes mechanical damage. It's the windings on the voice coil that overheat (blow) and burn through. The health of the voice coil windings can be verified by checking the resistance across the terminals.

You can also put a D cell battery across the speaker terminals. Just touch the wires from the speaker to the battery for an instant and you should see the cone move each time you do so. No cone movement= blown voice coil.


If the coil is burnt there will be no sense in looking into repair. Mechanical stuff like surrounds, tinsel, spiders, dustcaps, cones etc isn't a big deal but once the voice coil is toast having another one rewound by the manufacturer is going to be more expensive than replacing the speaker.

HKS7fanatic

couldn't have put it any better i didn't know about the D battery trick though, i'll hafta remember that one. yehs def right now, once the voice coil is gone, its really pointless. now if it isn't, i dunno how much or anything it'll be to repair everything else. try DamonB's trick w/ the battery and go from there.