If that is all you are looking for, then yes just split the stereo output into 4 channels. I thought that you were looking for surround sound/true 4 channel audio. Sorry!
What about sound quality? I am not an audiophile I just want something HU quality. My car has a stock Pioneer system that sounds pretty good. Will the onboard be comparable?
Splitting the signal shouldn't effect the sound quality.
If he uses a Y cable doesn't that 1/2 the voltage going to each channel? Can't this effect SQ? I am not sure on this just curious. I have 2 amps 1 4 channel and another 2 channel. I was at first just using the line out on my card and splitting it to my amps but after I used separate cables for each amp (total of 3 cables ... 2 went to the 4 channel amp and 1 to the 2 channel amp) my system sounded much better. I know this isn't an option for him unless he wants to upgrade but thought I would mention so he would know what he would get from upgrading to different soundcard. That is assuming that what I stated above is correct.
If he uses a Y cable doesn't that 1/2 the voltage going to each channel? .
Wires connected in parallel have the same voltage at each branch, but current is divided through each branch.
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Well after talking with my buddy today I have decided to go with a 4 channel soundcard. I was a little confused with the 2 channel setup, I'm new to this car audio thing. Anybody have a good recommendation for a 4 channel pci soundcard? I'm looking $100ish price range.
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