psu to power amp and speakers?

**qaz** · 05-30-2005, 12:42 PM

i was wondering for my home, if a computer power supply has enough power from the 12v line to power and amp with 4 speakers. thanks
Sean

**dan__wright** · 05-30-2005, 05:33 PM

yeah it sh ould be ok, but deppends on the psu and amp, but in short, yes it can be done.

**EsKALad** · 05-30-2005, 06:02 PM

No way man. It won't be powerful enough. If your talking about a 4 channel car amp? Running that 14 guage wire to power it will not have enough power

**0l33l** · 05-30-2005, 06:05 PM

I hear that AT PSUs have very strong 12v lines. But don't quote me on that.

**evandude** · 05-30-2005, 06:08 PM

you'll probably find AT supplies with 12v lines around 8 amps max... which isn't even 100 watts. maybe if you go buy one of those HAM radio power supplies, the bench ones that give you a cigarette lighter output.... those are sometimes rated at 20 or more amps output. However, you'll probably want to use a big cap on it, because the intermittent current draw will probably be much greater than the constant current draw...

or you could easily do it if you just get a car battery and a nice heavy duty car battery charger... run it with the charger on and connected and you should be fine.

but the real question is... WHY?

**kevinlekiller** · 05-30-2005, 07:42 PM

Yes it works, dont put the gain too high on the amp. (I did it to test my subs and radio when I got them to see if they worked).

**qaz** · 05-30-2005, 10:07 PM

click any of the links on the psu tiger direct page. they say how many amps each one has on the 12v line.

http://www.tigerdirect.com/applicati....asp?CatId=106

is 25 amps enough then?

evandude: i wanna have one central computer in my house to control maybe 12 speakers throughout. ebay has 6.5" speakers for $20 a pair. i figure this is one of the easiest and cheapest ways of doing it. however, im always open for suggestions.

Thanks guys