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Overexcursion distortion


TommyK

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I have a 15 " sub in about a 2.2 cubic foot sealed box and when i have it turned up i hear a soft buzzing noise from the cone but only when i open my trunk but its barely noticable really. The bass still sounds fine and clean in the car and continues to get louder as i turn it up but the buzzing becomes a bit more noticable but the bass incar is still very clean sounding. The sub is really flexing alot when its making the noise.

The recomended size for sealed is 2.0 cubic feet is it possible that my box is a tiny bit too big by .2 qubic feet and and causeing over excursion?? I dont think its caused from clipping i set my settings very carefeully and my bass sounds clean and my cone never even gets warm its cold even after playing it for two hours so it cant be clipping.

2003 rsx:Alpine CDE-102Fosgate P300-1Fosgate P1 6.5"s15" Re SRX

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what kind of buzzing?

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Any time you have have a power wire next to your frame put some rubber hosing (or cut up an innertube) around it. The wire is bound to wiggle (due to driving or flex) and the casing will eventually wear through.

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Is it coming from the subwoofer itself, or possibly from any speakers you may have in the rear? I know that once I turn my headunit up past a certain volume my rear speakers start to sound like they're buzzing. Try playing a track without the subwoofer on and see if the problem still occurs at those higher volumes, if so then it's probably because your headunit is being turned up too high.

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to big by .2 isnt going to cause any problems. could be a gap between the baffle and the sub, dustcap, like you said over excursion to the point of loosing linearity, a screw hole pushing air through it, etc.

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I have a 15 " sub in about a 2.2 cubic foot sealed box and when i have it turned up i hear a soft buzzing noise from the cone but only when i open my trunk but its barely noticable really. The bass still sounds fine and clean in the car and continues to get louder as i turn it up but the buzzing becomes a bit more noticable but the bass incar is still very clean sounding. The sub is really flexing alot when its making the noise.

The recomended size for sealed is 2.0 cubic feet is it possible that my box is a tiny bit too big by .2 qubic feet and and causeing over excursion?? I dont think its caused from clipping i set my settings very carefeully and my bass sounds clean and my cone never even gets warm its cold even after playing it for two hours so it cant be clipping.

The box being .2 cubes bigger should have nothing to do with it. i havea 5 ft3 box for my 15 . Is it sort of a popping noise when it hits or buzzing? I use to have a popping noise which was mostly do to gains set horribly wrong as in my LPF being around 110 and subsonic off and gain to high.

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No its not like in the video that sub sounds half blown It kind of sounds like bass youtube videos where the mic sounds like its farting from so much bass but more like a soft buzz sound instead of farting mabey im just overpowering the

sub but not enough to blow its voice coils?

2003 rsx:Alpine CDE-102Fosgate P300-1Fosgate P1 6.5"s15" Re SRX

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Anyway you can do a video, like the newbie did ?

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