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CarPC Sound Card Help

1.6K views 20 replies 9 participants last post by  Black_Sunshine  
#1 ·
Hey all,

Here is my problem, I've never been a big audio buff, so I don't know a lot about the systems out there. I have decided to use the CarPC that I'm building as my "head unit". That said, what am I looking for as far as the capabilities of the audio for the computer?

Will the basic on-board sound work (pumped into system straight from stereo)?
Is it worth it to place a dedicated sound card in it? If so, why?
What is the best setup of this kind of job?
What technologies or specifications am I looking for in the hardware?

Thanks.
 
#2 ·
I'd go with an aftermarket sound card for sure. On board sound cards tend to have crackly sounds, and not as "full" sounding.

What card would be a good idea I don't know. I'd steer clear of Creative because their drivers suck big time. I occasionally have to close all my programs and reopen them because everything turns into staticy garbled gibberish.
 
#3 ·
It would depend on your motherboard and the type of built-in sound card that it has. Unless you're a huge audiophile, you don't need an expensive 3rd party sound card. Most on board sound cards are more than adequate.

Also, on another note, I've never had any issues with Creative products in the past.

So there you have it...two completely contradicting opinions.
 
#6 ·
All this garbage about on-board sound sucking is only half true.

The large majority of people asking won't notice a difference. I have a VIA board in my car now, running straight to the Auxiliary input on my stereo. There is only a bit of noise when everything's turned all the way up, and the engine is completely off.

If you're only playing medium-bitrate MP3s, what will you gain?

I'd suggest trying things first with your onboard sound. I have only used one PC104 (smaller than Mini-ITX) board that had crap sound, and that was because my switching power supply wasn't filtered.

If you want to get a sound card to put in, get a low-profile Creative PCI card
 
#8 ·
All this garbage about on-board sound sucking is only half true.
It's not half true. Onboard cards are garbage, they sound like garbage, and if you aren't seeing a difference listen to both on a good set of speakers and tell me it's a half truth. Onboard cards are made with cheap crap components and are intended for people that use the crap speakers that come with the crap Dell computer they bought.

I have heard pretty much every onboard sound card and not one of them sounds good. At least not on half decent speakers. Also, if you're listening to medium bitrate Mp3s, then you don't care much about sound anyway.
 
#10 ·
Honestly, I think it will depend more on what kind of speakers you are using than the card. But I do agree that as a general rule of thumb, onboard sound as well as onboard video is typically worthless. I use a really nice creative labs sound card for on my studio computer but it has a huge input box that has to plug into it so I'm not sure it would be best for an automotive application.
 
#12 ·
I am also looking into getting a carPC and I do care about my sound. what is the best way to get it from my carPC to my 4 channel amp and my sub amp? just a 3.5mm jack to RCA splitter? I would like to stay away from that though.
 
#13 ·
Wombat said:
I'd be interested to know what sound card and speakers you're comparing to?
Back when I was building my CarPC I had an old Sound Blaster Live PCI, and my speakers are Logitech X-540's. I swapped out the Live card a while ago and am back to using onboard Realtek audio. (This is not an OEM pre-built motherboard though, it's a midrange MSI board.) The difference is very small; there is a tad bit of distortion in the bass if I crank the output to 100%. The Live card didn't have this small issue. Since I have the output set to 70% all the time it's not an issue.

And to be honest, the small amount of noise I hear in the car with the engine off is easily overpowered by the hard disk spinning :p The VIA also has the same problem reproducing bass at max volume. Same thing, just keep it around 70-80% and no distortion.

To anyone who is curious about this kind of thing I'd recommend experimenting; but always try the cheapest options first.

LP_Stealth said:
I am also looking into getting a carPC and I do care about my sound. what is the best way to get it from my carPC to my 4 channel amp and my sub amp? just a 3.5mm jack to RCA splitter? I would like to stay away from that though.
That's basically it, don't skimp on audio cables. And most importantly be careful not to run them parallel to any power wires you have, or you'll get an irritating hum.
 
#14 ·
Back when I was building my CarPC I had an old Sound Blaster Live PCI, and my speakers are Logitech X-540's. I swapped out the Live card a while ago and am back to using onboard Realtek audio. (This is not an OEM pre-built motherboard though, it's a midrange MSI board.) The difference is very small; there is a tad bit of distortion in the bass if I crank the output to 100%. The Live card didn't have this small issue. Since I have the output set to 70% all the time it's not an issue.

And to be honest, the small amount of noise I hear in the car with the engine off is easily overpowered by the hard disk spinning :p The VIA also has the same problem reproducing bass at max volume. Same thing, just keep it around 70-80% and no distortion.

To anyone who is curious about this kind of thing I'd recommend experimenting; but always try the cheapest options first.
I had a standard Live card in my system on some Klipsch speakers. I upgraded to the X-Fi shortly after it came out and it was a huge difference. You have to remember that the Live cards are pretty old by now. Actually five generations behind, so I can see it barely being better than the onboard. I think you'd see a huge difference between that and an X-Fi.

Just remember that SNR is only one slice of the pie. ;)

That's basically it, don't skimp on audio cables. And most importantly be careful not to run them parallel to any power wires you have, or you'll get an irritating hum.
Yeah, avoid the Y splitter. Also, good advice. Don't run anything near a power cable.
 
#17 · (Edited)
The splitter and the crossover accomplish two completely separate things:

In short, the crossover will filter the correct frequencies from a single channel into 2 or more speakers appropriately.
The splitter will split the channel into 2 identical channels.

If you're using an amplifier, you don't really have to worry about any kind of signal loss from using the splitter.


EDIT:
Head over to Basic Car Audio electronics, Basic Car Audio Electronics, and spend some time reading it before you proceed any further if you're unsure of anything - the site has **A LOT** of info on it
 
#18 ·
Actually, I did just that last night. It appears as thought the sound card can eliminate ALL of the devices meant to go between the head unit and the Amp. Basically, One can use the card to pump only the freqs they want down each port of the card, and those go straight to the Amps (they act as pre-amp signals).