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My sub sounds alot weaker than usual, need help.

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Old Nov 19, 2006 | 05:30 PM
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Default My sub sounds alot weaker than usual, need help.

I have an audiobahn 15" subwoofer comming from a rockfordfosgate amp with infinity component all around.

The system has been sounding great for about a week, but recently a retarded passenger turned the volume up WAY to loud (max volume) and ever since the sub seems like it has no power. Does that mean the sub is blown?

The amp is quite a bit underpowered for the sub, the rms is a few hundred watts under, so that made me think it would be hard to blow it??? The less powerful base doesn’t sound as clean either.

Also some times when I turned the headunit off the sub was still getting feedback and hitting slightly but not to any beat it was random. TIA for any help!
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Old Nov 19, 2006 | 07:08 PM
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Go and push down on the subwoofer ... does it scrape a bit when you do it? You will be able to feel it ...it'll feel like its rubbing on sandpaper while moving.

If you can ... get a multimeter and check the resistance of the subwoofer (you can just check it at the amp)

It may be blown, do these two tests for more info.

Jim
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Old Nov 19, 2006 | 08:08 PM
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If you over drove the amplifer putting into clipping you can easily smoke a speaker rated at hundreds of watts more than your amplifer is rated. Most people I here thumping their system are driving it into clipping ... sounds like finger nails on a chalkboard but they can't hear it.

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Old Nov 19, 2006 | 10:05 PM
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Could you give me a better definition of "clipping"?
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Old Nov 19, 2006 | 10:10 PM
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you might've blown your sub. I've blown a few 15" and usually, it sounds muddy and not as loud.
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Old Nov 20, 2006 | 06:30 AM
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Originally Posted by HockeyZ39
Could you give me a better definition of "clipping"?

amps clips

a basic description , amp not getting enough power
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Old Nov 20, 2006 | 06:32 AM
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Originally Posted by HockeyZ39
I have an audiobahn 15" subwoofer comming from a rockfordfosgate amp with infinity component all around.

The system has been sounding great for about a week, but recently a retarded passenger turned the volume up WAY to loud (max volume) and ever since the sub seems like it has no power. Does that mean the sub is blown?

The amp is quite a bit underpowered for the sub, the rms is a few hundred watts under, so that made me think it would be hard to blow it??? The less powerful base doesn’t sound as clean either.

Also some times when I turned the headunit off the sub was still getting feedback and hitting slightly but not to any beat it was random. TIA for any help!



what model sub part # ?

what model amp part # ?
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Old Nov 20, 2006 | 06:43 AM
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underpowering a speaker can be just as bad as overpowering it. The clipping they refer to leads to many speaker deaths. Think of it this way, instead of the wave being a smooth up and down motion, its almost like it chops off the top of the wave and now you these points on it instead of a smooth line
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Old Nov 20, 2006 | 06:47 AM
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Originally Posted by savvy
underpowering a speaker can be just as bad as overpowering it. The clipping they refer to leads to many speaker deaths. Think of it this way, instead of the wave being a smooth up and down motion, its almost like it chops off the top of the wave and now you these points on it instead of a smooth line
speakers don't clip amps do
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Old Nov 20, 2006 | 06:48 AM
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Originally Posted by savvy
underpowering a speaker can be just as bad as overpowering it. The clipping they refer to leads to many speaker deaths. Think of it this way, instead of the wave being a smooth up and down motion, its almost like it chops off the top of the wave and now you these points on it instead of a smooth line

clipping amps are not good for speakers though
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Old Nov 20, 2006 | 06:50 AM
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thats what i was referring to, the amp not the speaker
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