Page 1 of 3 123 LastLast
Results 1 to 10 of 21

Thread: Something everyone should know about sound cards.

  1. #1
    Maximum Bitrate CarComp's Avatar
    Join Date
    Oct 2001
    Location
    Indiana
    Posts
    515

    Something everyone should know about sound cards.

    I learned recently, from installing a few more computer systems into people's cars, that sound cards DO NOT truly put out the same kind of power that a normal head unit does. True, it is close, and does work, but I have found that you can reduce a lot of "electrical noise" that the computer / car generates if you follow these few guidlines.

    1. Ground your soundcard to your car's ground. Also ground your cdrom casing to the car's ground.

    2. Use a ground loop isolator between your sound card and your amplifiers (readily obtainable from Radio Shack). Keep it away from any power / speaker wires, because it WILL pick up noise. The isolator removes any power supply induced hiss / noise.

    3. Invest in a good Pre Amp. Audio Control makes a good one called The OVERDRIVE that can match your output from your sound card.

    4. In conjunction with the Pre Amp, set your amplifier gains to their minimal settings, then set your computer volume at 3/4 max. Begin turning up your amplifier gains until you hear clipping / distortion.

    5. In Windows: Mute all un-needed volume controls. Usually the mic, the modem, and any others that you do not use.

    That should get rid of the noise.
    Get MediaEngine !!!
    Media Engine Download

  2. #2
    YoMaMaZPHaT
    Guest
    instead of going with a pre-amp, could you just run the soundcards output into the aux input on an aftermarket CD player and get the same effect? or does this not prevent the problem of not putting out a much power as just a HU by itself?

  3. #3
    FLAC
    Join Date
    Apr 2001
    Location
    Here, There, Everywhere
    Posts
    1,436
    Carcomp, I agree with all your statements EXCEPT that of the ground loop isolator.... I find them to distort/ruin sound output and is really more of a 'cure' than a 'prevention'

    follwing your other steps, if you still have noise problems I would be looking at the quality of the sound card itself....
    Project - GAME OVER :(

  4. #4
    Maximum Bitrate
    Join Date
    Sep 2001
    Posts
    744
    I disagree with the set software volume to 3/4. That is an arbitrary value that has no basis or reason. Mine is turned to 100% and I have no noise except at my highest 1/10 of my head unit volume.

  5. #5
    Maximum Bitrate CarComp's Avatar
    Join Date
    Oct 2001
    Location
    Indiana
    Posts
    515
    Those values were assuming that you have no head unit installed. If I use full volume on my puter, I get a nasty case of clipping. Not distortion, but I lose the quit a bit of my mids.
    Get MediaEngine !!!
    Media Engine Download

  6. #6
    jol
    jol is offline
    FLAC jol's Avatar
    Join Date
    Jan 2002
    Location
    Mellansel, Sweden
    Posts
    1,299
    In Sweden, we user triple-shielded cables, guess there's plenty for everyone

  7. #7
    Variable Bitrate
    Join Date
    Jun 2002
    Location
    Norway
    Posts
    310
    Originally posted by jol
    In Sweden, we user triple-shielded cables, guess there's plenty for everyone
    Hear hear hehe


    (In Norway too)

    Richard
    "If A equals success, then the formula is: A=X+Y+Z. X is work. Y is play. Z is keep your mouth shut."
    Albert Einstein

  8. #8
    Variable Bitrate Mikesz's Avatar
    Join Date
    Apr 2001
    Posts
    360
    I have a sound blaster live and it has loads of voltage on the outputs. More than most stock headunits. I have the gains on my amps set to about 1/4 to 1/2 if i remember correctly.

    mike
    91 cadillac sedan deville, winXP, FV25 with Celeron 800, Redant 7" widescreen in dash, Opus DC-DC, Irman, Digital Cable remote(lots of buttons), 120 gig 7200rpm 8meg cache WD hard drive, VI power mobile HD rack, mediaengine

  9. #9
    Variable Bitrate
    Join Date
    Mar 2002
    Location
    Long Island, NY
    Posts
    334
    I agree about the Ground Loop Isolator...it takes away from the overall sound (does a good job at taking hiss away) and takes most of all bass tones. I took mine out and the difference was HUGE, so I started putting up with the hiss again. Then again, Im running off of an inverter, so as soon as OPUS's new PS comes out that should solve alot of the hiss problem...

    Also, I also found that turning my windows volume up to 100% really starts to distort the higher frequencies...I turn it down to about 85% and it sounds best. But this is with the integrated sound in a Via Epia 800 im using...so that could be the problem too. Getting an audigy soon, that and a good ol DC-DC should do it! =)

    Grand AMplifier Project 1.0:
    http://drive.to/cliffsgrandamgt/
    http://www.astallaslions.com/carmp3/
    --------------------------------
    -Eden 800 mini-itx motherboard
    -5.6 NTSC TFT-LCD
    -80 gig hard drive
    -128 MB RAM
    -MPBS1 DC-DC PSU
    -PB Remote /w Girder
    -Media Engine & Windows XP
    -Playstation II also added
    -Steering Wheel Buttons modified for Control.


  10. #10
    FLAC
    Join Date
    Apr 2001
    Location
    Here, There, Everywhere
    Posts
    1,436
    good to see someone else had the same experences with Ground Loop Isolators....

    Cliff, once u get your Audigy you will notice the difference.... im running an inverter with my Audigy and it sound fantastic... going DC-DC in the new year with a EPIA 800 (keeping the Audigy of course!) so all should be supa sweet...
    Project - GAME OVER :(

Page 1 of 3 123 LastLast

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •