12v outside the car

Hi to all! Not sure I'm on the right forum, but I will give it a try... I have a couple of good ol' tape stereos (Alpine 7390 & Harman Kardon CR-151) that I would like to have them play into my garage along with a couple of amps and speakers... What I would like to build is a small rack with these components installed (a la Best Buy type of rack). My question is, How do I power them? Any recommendations on what type of power supply I will need that can handle them. unfortunately the amps are a little bit big (Rockford Power 300 and Punch 150) Also, any idea of the company that build the relays (or switches) that allow you to choose/play different combination of head units/amps/speakers? Many thanks! ~jachong

a couple deep cycles battery's and a battery charger. That is what I used for my set up in my garage. Can't be loud then don't have it.

(power acoustik system)

Head unit- TID-896 7" TOUCHSCREEN

ovn1-5500d 09 and another one coming soon

4-12" mofos 12ft3 box to 40hz (wall)

2 batterys, 1 power

Thanks! Can you recall what battery charger are you using? how do you wire both batteries, parallel? Do you know if there's a solution that doesn't require the use of batteries? I have a nosy dog and a couple of curios toddlers (if you know what I mean) :) Thanks! ~jachong

Or you can go to radio shack or something and get a power inverter.

Most of the power inverters are from 12v --> 120v. What I would like to find is from 120V --> 12v. with maybe 30 Amps (?) I wonder what type of power setup the stereo racks of the department stores have, even to handle the big amps/subs they have running. Any ideas?

what you need is a 12 volt power supply. I have a 25 amp power supply from radio shack and I can power a 200 watt rms amp all day long. I used to have an old deck and 50w x 2 @ 2 ohm amp that would crank all day. Much better than batteries and a charger as the charger would only be helping while the equipment is off and not pulling power.Custom Enclosure Design

I think I found one: http://www......com/item_7691_Pyramid+PS52KX.html Any idea on the switching mechanism on using one out of 2 stereos? Like the ones on Best Buy or the now defunct Circuit City. :) Thanks! ~jachong

Well the ones that best buy and other retailers have are expensive. Roughly 3,000-5,000. What is the reason you want one?

Look in to an Astron power supply - they are great for power automotive junk and arn't too terribly priced.  If you want something that is going to last skip the Pyramid and go with the Astron.Kevin Pierson