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car subwoofers in a room


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anotherloserkid 
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Posted: April 19, 2006 at 2:11 PM / IP Logged  
anyone know how or what i would need to put 2 12" infinity car subwoofers in my bedroom so i could hook it up to the tv????
godblessdremil 
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Posted: April 19, 2006 at 3:34 PM / IP Logged  
buy a cheap surround sound system. It would be cheaper.
anotherloserkid 
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Posted: April 19, 2006 at 5:34 PM / IP Logged  
i dont really care about the price, its just something iv  wanted to do, and i think it would be tight
godblessdremil 
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Posted: April 19, 2006 at 5:47 PM / IP Logged  
Dam my posted 3 times, well first you would need a power supply big enough to run the amp that can get expensive just a 40 amp will cost you about 150-200 dollars min. now i do not know if the amp can run the signal from a tv but i believe there is a converter that you can buy.
anotherloserkid 
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Posted: April 19, 2006 at 6:19 PM / IP Logged  
what if i hook it up to a reciever?
stevdart 
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Posted: April 19, 2006 at 11:54 PM / IP Logged  
You can use your Infinity subwoofers in your home system.  You'll need to build a box suitable for those woofers in a room environment (think larger than in a car), and power them using a receiver.  Home theater stuff.  You will also need a center channel and front main speakers.  Rear surrounds would be good, too.  Subs by themselves won't do a thing for you.
Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.
DYohn 
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Posted: April 20, 2006 at 12:49 AM / IP Logged  

I don't know of any receivers that will power a subwoofer.  There is no difference using car audio subs inside than using home theatre subs, you just need the proper enclosure.  Like Stevdart said, you'll need to construct a home theatre-style enclosure and purchase a subwoofer amplifier designed for use in the house.  Hmm, two Infinity Perfect 12's in about 9 cuft ported at 18Hz with a 500 watt plate amp should be about right.  I cannot recommend you try to use any car audio amplifiers inside.

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anotherloserkid 
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Posted: April 20, 2006 at 4:47 PM / IP Logged  

thanks alot.

Why does a home theatre box need to be so big???

and how would i figure out the port size? cause if you use a calculator online for a car box wouldnt it be off?

stevdart 
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Posted: April 20, 2006 at 9:40 PM / IP Logged  

If you were to work up a subwoofer built for car audio use in a box-building program (see my WinISD sticky in the Car Audio forum and go through the steps for a good learning experience), you'll likely see recommended cubic feet that are larger than a lot of the manufacturer's recommendations for box size.  The small confines of the car audio environment introduces a proportionally greater "cabin gain" to the overall sound than a room in a home does.  I would basically just tend more to the small side for the car and to the large side for the home.

Manufacturers of subs (the good ones, anyway) build some characteristics into the woofer to allow it to perform to its best in one environment or the other, and that has to do with room size.  You know that a room in your house is larger than the room in a car, and that is what they model when they develop these subs.  The characteristic differences are shown in the parameters provided by the sub manufacturer, so you can model either a home sub or a car audio sub in the program and it will come out right.

You definitely want to model this sub if you are intending to port it.  Box tuning has to do with the airspace in the box, so whether it's for home or car the tuning will be appropriate...as long as it's good for the sub in question.

hint:  post the model of your subs and then follow DYohn's advice on box size.  He has built home theaters for the stars.

Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.
anotherloserkid 
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Posted: April 21, 2006 at 6:53 AM / IP Logged  

there 2 12 inch Infinity reference

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