Hello everyone. I would like to first state that I have a lot to learn about everything involved with audio, but I have done some basic preliminary research.
I recently bought a Kenwood VR-505, pretty basic stuff (100x5 channels, Pre Sub Out). I found one for a nice deal from a local guy off of eBay. I have some hand-me-down speakers from a friend, and they are sorely lacking in the bass department. And the highs for that matter. They're pretty bad.
What I'm doing is slowly building up a better system one component at a time, at the cheapest possible price I can. Price is the main factor for me.
My current plan goes something like this: Im planning on buying a 12" sub off of a friend and a 200 watt amplifier (I'm living in an apartment and cant have too much power, I just want to have more bass), both of them for car audio. After I've done some research I found there is the possibility of using the power supplies out of computers as a cheap way to get AC to DC so I can use car audio in a home audio setting. I have another friend who has some extra computer power supplies (PSU's) laying around that he'll give me for free.
What I'm looking for is someone with actual experience with this to look over my (most likely totally incorrect) plan to implement this. Firstly I would take the green #14 PS_ON and wire it to #15 COM right below it to fool the PSU into thinking that it's connected to a motherboard.
http://www.techpowerup.com/articles/other/22
I figure since the PSU puts out 12v (at least similar to a car battery), all I would have to do is figure out how many amps I would need. If I have a ~2 ft long piece of wire total, with 12v going to a (lets assume) 50% effecient amplifier I would need ~30-35 amps. It is unlikely my buddy's PSU's 12v rails will put out more than 15a at most, and more likely 6 or 8. Thus that brings me to the next point.
I would then twist together all of the yellow wires (the 12v rails) comming out of each PSU, solder each one to a 35 amp diode and then have 10 AWG wire comming out of the back of each diode and then join all of them together. Then I would run this joined wire to the actual amp. I would do the same thing for the ground wires out of the PSU's (except without the diodes) and attach that to the negative pole on the amplifier. My questions about this part are: How would I go about joining the wires before I run them to the amplifier, would I just solder them together? Is there some sort of doodad I should join them with? Can I use a capacitor here to even out the peaks and valleys? And can I join the grounds the same way I join the 12v rails?
I know this is long and Im probably not describing it correctly due to my lack of electrical engineering knowledge. I've put together a mock-blueprint that just outlines the concept of what I want to do.
EDIT: Forgot to write what I wanted to say on the second circle over a yellow intersection
. What I mean to say there is that I would not twist in one of the 12v rails and instead put it to the REM in.
Thanks for reading this beast of a post, and thanks a ton in advance for any reply!
