how do i hook up subs in my room?

I want to hook up my 500 watts RMS sub to my room for a little bit of time (4-5 weeks). I want it to be very simple and inexpensive becuase it isnt going to be a permanent set-up.

I was thinking about this: Hook up the subs to amp and then hook up the amp to a car battery (just like in a car). Of course I know that I have to run a small wire from the + of the battery to the remote on input on the amp. I also know that to ground the amp I have to hook it up to the - of the battery. Then, to charge the battery..I will have to hook up a car battery charger to it every time the battery gets low. Another thought I had was that I could just hook up the battery charger to battery while the amp was on as well. (Also just like usual I will put a fuse on the positive connection!)

What do you guys think? Isnt this easier and cheaper than the whole buying a AC-DC converter.

If you have the battery and charger than yes it's cheaper and easier than buying a converter. However you already have a battery charger which is the same as AC-DC converter, it probably can't produce the 41amps you need to drive the subs though.

I would keep the charger on while playing. Car batteries are meant to start a car and clean up the voltage from the alternator. A starting battery would not like being used for this, a deep cycle would be better suited.

reax222 wrote:

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If you have the battery and charger than yes it's cheaper and easier than buying a converter. However you already have a battery charger which is the same as AC-DC converter, it probably can't produce the 41amps you need to drive the subs though.

I would keep the charger on while playing. Car batteries are meant to start a car and clean up the voltage from the alternator. A starting battery would not like being used for this, a deep cycle would be better suited.

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omfg awsome! I have a deep cycle battery in my boat, its wth heavy though =( Yeah thanx alot ill try this set up! As for the amps, its ok I dont think it would be a good idea to play the sub max volume in my house. My neighboors would get wized off.

The battery charger could add enough noise to be annoying. Most battery chargers aren't designed to be power supplies and are not intended for continuous use. A converter would be filtered and much better regulated.

computer power supply works. fyi

I tried a 170watt PSU to drive a dirt cheap 100watt amp. I believe the problem I ran into was, there needs to be a load on the 5v rail as well as the 12v rail. Otherwise, it just shut down on me as the amp tried to produce sound.

For the battery charger making noise, I run my stereo in my yard with a charger hooked up. Granted, I do have more wire for the current to flow, but I haven't noticed any noise. I would think that the battery would filter out most of it, what was left I wouldn't expect to come through subs.