Why do my subs sound bad when i close my trunk?

Question:
I have 4 10" rockford fosgate p1 subs and they sound good and bump real good when the trunk is open but as soon as i close the trunk they sound like s**t. I dont no how to fix it i have tried everything

Answers:

Kenwood KDC-MP205 or pioneer DEH-P3900MP?

i dont konw what kind of car you have but try
removing any obstruction from the trunk to the
passenger cabin space
obviously you cant remove the back seats
but see if you have some material you can remove from the inside of the trunk.
i had that problem in my car and turns out i had a thick layer of rubberized carpet kind of like whats on your fire wall.
i removed that and some of the padding from the inside of the back seats( i dont sit back there lol ) removed my rear deck speakers so the sound travels through the empty cavity.
and anything exposed i coverd in headliner material
good luck if all else fails check your polarity

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Connect a JVC stereo in an old car?

I have had some subs like that before too, im not 100 percent positive, but i think you need to get a different box

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98 blazer speaker conversion?

You need to dynomat your trunk.
And also your car doors, makes it not rattle your car as much..
Dont know if thats one of the problems with the trunk though.

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Where can I find a Dask kit for an aftermarket stereo (Pioneer AVIC-D2)for an 07 Nissan Altima?

Simply put... your reverb has no where to travel besides that small trunk space. Your using speakers that were designed to reach across air molecules but isn't that the purpose of having them in such confined areas? to get that distorted thump?

I am trying to put a cd player in my ford taurus,but from the looks of the taurus it looks like it doesnt fit?

Myself I rather have my stuff breath and maintain a clean thump.

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Massive Audio vs The Rest?

Dynomat your entire car. It is not the speakers but the car that is making it sound like that. You hear a lot of rattle but dynomat will absorb some of the sound waves that cause the rattling noise coming from the car. You should be able to get enough from a local stereo shop or on ebay and let them install for you. It will greatly improve your sound on the inside and outside of the car. the bass will be clear with no rattle.

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Where can I buy a Kicker box?

put a dynamat trunk kit in ur ride this will stop most of the crappie noise now u will sound better coming and going down the road

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Question regarding car stereo specs. and installation.?

switch the polarity on one of the speakers and close the trunk see what happends
good luck

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What is RMS Power Bandwith, and how will it affect my sound system?

Sounds like you don't have enough free air in your trunk. Try opening up the "extra" holes in the metal part of your rear deck. Also remove any plastic/rubber covering on the trunk side of your back seat cuz this will help airflow into/out of your trunk.

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