Thnx for the suggestion but I'm not likin that idea.
post #21 of 29
3/8/08 at 10:26pm
No offense, rx7speed, but you don't know what you're talkin about. I can't imagine anyone watching this thread would agree with you.
Easy way, and fairly cost effective however takes up quite a bit of room.
Buy 4 PSU's (preferably identical) with 40 or more amps on the 3.3V rails.
Connect them in series
positive_1 --> negative_2 --> positive_2 --> negative_3...
etc, using 4 will give you 3.3*4 = 13.2V with 40amps (or whatever the 3.3v rails are rated at) which is the voltage a car alternator produces.
There is a guide on OCN that someone wrote up a while ago if you want to use this method, I'm not sure where it is but if you search for it, it should show up.
Lol, why in the world would you do that instead of just using the 12v rail?
I've got a "1000w" (not really) car amp driving my 500w car sub... and I'm powering it with the cheapo 480w power supply that came out of my computer case when I replaced it. Works like a dream.
All I did is chop off the end of the vcore line, put the two blacks on negative and two yellows on positive, put a jumper between the positive and the "on/off" selector, and away I go. Hit the power switch on the PSU to turn the whole thing on. It is freakin awesome, and sounds halfway decent. Get's loud at any rate.
$5 for the amp at a garage sale, $30 for the 500w sub, $12 to build a custom enclosure for the sub, and a free cheapo PSU.
Main reason is because most of the newer power supplies are going for multi-rail designs, so all of the cheaper PSU's only have maybe 20 amps max on a 12v rail = 240 watts which isn't nearly enough.