THIS IS MY SOUND CARD

Plugged into a computer in my car. atm I am running 2 channel form a 3.5mm to rca into Y splitters. The card has digital coax output and also an optical output TOSlink maybe i dunno. The card is 5.1 sound and I want to run 4 channels and put some subs in down the track. I have a new 4 channel amp, just rca input not digital. How can I get good quality 4 channel sound with what I got. Cheers guys any help will be excellent as I dont know much about the technical stuff like this.

Playing with digital is likely going to cost you alot of money. You'd be better off getting yourself some decent speakers/amps if you dont already and worry about a digital signal once all the rest is done.

I already have good speakers and brand new standard amp. Gotta be a way to connect via the digital ports on the computer to my amp. Coax to rca? toslink to rca? Anyone got a link to where to buy these things?

I wanted this post to be in the main part as most of those guys dont bother with this forum. I dont even see it on the main page.

1 way to convert digital (optical) to RCA would be to use an Alpine H700 processor. This is what I do. But this will cost you $1000 for the brain unit, and another $400-500 for the controller.

As I said, theres always better improvements you can do first.

yeah, to run digital, you need a DAC of some sort.
they range from expensive (see PXA-H700 above) to really expensive ($25k+) and even in that price range the quality can vary quite a lot.

good amps, speakers, and RCA's are far more important in SQ.

ok thanx for your help. I got some good quality 3.5mm to rca plugs, installed all the 5.1 sound drivers for my card and am now getting a nice quality 4 channel feed. Im happy with the setup it will do fine. Later I will use the sub channel and put some subs in.

Good to see you got it sorted. That is exactly how I am connecting my carpc to my audio system. Not the greatest sound (using onboard sound) but does the job for now!