12v constant charger

Thanks for all the replies. Good info. Since we've come this far, may I ask where in the heck ur finding these on best buy?? Here's a link to what I think I'm looking for: http://www.parts-express.com/pe/showdetl.cfm?Partnumber=300-752 Can't find anything like it on best buy. Thanks!

Best buy was only an example.

Gotcha Why would a car sub not sound right in a home theater application? Same frequency output. BTW it is a square kicker (I think its a solo baric L7, but it is in storage so i cant check right now). So I could get a different sub but the box i built has a square hole :/ Here's another amp: http://compare./like/300560566495?var=lv<yp=AllFixedPriceItemTypes&var=sbar&_lwgsi=y&cbt=y if i'm remembering the sub correctly it calls for lots of power. Does it sound bad if i give it 200W when its max rms is 750W?((x1^2+x2^2+x3^2+x4^2+x5^2)/5)^(1/2)

Bad link. http://compare./like/300560566495?var=lv<yp=AllFixedPriceItemTypes&var=sbar&_lwgsi=y&cbt=y((x1^2+x2^2+x3^2+x4^2+x5^2)/5)^(1/2)

Ooookkaaaaayy, so the12volt wont post the link correctly. Anyone interested could searche e b a y . c o m for 300560566495 to find it((x1^2+x2^2+x3^2+x4^2+x5^2)/5)^(1/2)

First, 750watts max = about 280watts RMS Second, car units are optimised for trunks or vehicle interior not room sized. Second discussing domestic amps is not germane to this site, I don't have enough knowledge of product or retail outlets in the US to help you.

If it's a home theater application, haven't you got a home theater sound set up with a sub?    If not, look at a complete system. IMO some of the higher-end computer speaker systems are pretty good - they have remotes, optic inputs, etc at a reasonable price. Otherwise, as before, just some domestic sub - and no batteries - especially wet lead acid. It's a much cheaper solution anyhow... I don't think square speakers are good anyhow - I'd use the same arguments as I used in the days of rectangular reflector headlights...