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bull4u2me's Avatar
 
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My 944 came with an external SONY XPLOD amp with a 800 Watt subwoofer in the car..... and it stopped working recently. I checked the wiring, and it seemed fine, the fuse didnt blow either. Are there any other places I could check to fix this problem?
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Old 07-20-2004, 08:29 PM
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Old 07-20-2004, 08:31 PM
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Check for other fuses (radio etc) - sometimes there is more than one.

Otherwise, I've seen a few amps just stop working.

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Old 07-20-2004, 08:39 PM
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sell the amp to some civic enthusiast, buy a new alpine, blaupunkt or rockford fosgate amp (300W) and subs to replace yours.

chances are the amp is dead, voice coils on the subs are completely shot, or the wiring is severed.
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Old 07-20-2004, 08:46 PM
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First make sure you're getting 12v through the amp. Use a volt meter to check between the positive and ground terminals on the amp while it's plugged in and the ignition is on. If that reads close to 12v, next check your turn-on lead. This is usually a small blue wire marked "rem." Sometimes head units supply continuous power when they're turned on, sometimes it's justa quick shot to turn on the amp. Check to see if it reads anything when you turn the head unit on and off. If not, it's possible your head unit might not be turning the amp on. Loose wire or a bad head unit.

If all of that checks out, you need to test the speaker and amp separately. This is tricky if you don't have other speakers or amplified sources around. Anyway, those methods are generally self-explanatory. Before dropping several hundred bucks on a new amp (for a questionable driver) I would take the amp to a stereo/audio shop (not necessarily best buy or circuit city, any decent home theater or sound place can test it) and have them test the amp to see if it's good. You should probably bring the whole sub assembly too, just to make sure you nail the problem. Worst case - crutchfield has good prices and excellent service on nice amps and subs in any combo/size/enclosure you want. Good luck.
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Old 07-20-2004, 09:16 PM
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put the sub on a voltmeter and see what the resistances are on the sub. in another car i went through 2 sony xplode subs (the ones rated at 900watts.. yeah right) a month that were on a 400watt coustic class d amp. thats god for the circuit city warranty i bought with them. i ended up going through over 15 subs before i traded up for alpine type e's.
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Old 07-20-2004, 10:20 PM
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Better to buy a bigger amp than your subs are rated for. Low-power amps, when turned up, can put dangerous currents through your speakers--more than they are rated to deliver. Usually, these are subsonic, so you don't hear them, but they can certainly blow subs. As a general rule, you don't want to turn your amp up past the 2/3 volume mark.
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Old 07-21-2004, 04:33 PM
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I have a 220Watt Sony Xplod amp with an 800 watt subwoofer.... and it still isnt working. Thanks for all the replies!
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Old 07-22-2004, 02:24 PM
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