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Thread: Unforseen Problems.

  1. #1
    Constant Bitrate
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    Post Unforseen Problems.

    Ok, So I finally got around to sticking everything into my car to see how my system works. The screen works perfectly, as does everything else, except for my audio.

    I have a turtle beach sound card and I took my line out and plugged it into my Rockford Fosgate amp. I can hear all of my music, but on a scale of say 1 - 30 (30 being loud) my music only hits maybe a 10 or 12. (I am comparing the volume to what my radio puts out).

    My first thought is that maybe the voltage of the soundcard output doesn't match the preamp output off the deck. If that is the case then I need some recommendations a a better sound card, if something else is the problem then I would love to hear alternate solutions.

    Any help will be appreciated, I am starting to panic here. Because if this is all the volume I can get out of my carputer then I can't see the purpose of having it!

  2. #2
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    Are you taking the audio from the line-out or speaker outputs? The line-out is not amplified by your sound card but the speaker out is. Try using the speaker out. And the output of the sound card WILL NOT match the preamp output of your head unit, unless you have a really old head unit. The wattage of the sound card is low compared to a head unit.
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  3. #3
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    Thanks for the tip. So what kind of sound quality can I expect? I was assuming it would be pretty close to the rest of my system.

  4. #4
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    Well since you are using the AUX in to your head unit the quality should be good. I am using a FM modulator to get the audio to my head unit and it sounds very good.
    http://www.mp3car.com/usersites/Maveric/ M.A.V.I.C. System
    Asus MB, PII 266, 192 MB Ram, 6.8" LCD, 6 Disk CD-ROM, 21 Gig HD, All-in-Wonder Video w/ TV Tuner, Irman, Windows ME, Winamp, Cobra III -- All in a custom acrylic case.

    http://www.mp3car.com/usersites/listings/ MP3car Listings - Please add to it! :)

  5. #5
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    A couple of questions for you maveric:

    So does the FM modulator sound better than or equal to an average radio station?

    Can people around you, say if you had somebody following you somewhere, listen in on the frequency you are using?

    Thanks

  6. #6
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    The FM modulator sounds better than the radio because it connects directly between the head unit and the antenna. It doesn't actually "broadcast" anything just sends the audio on a certain frequency. Although I have seen FM transmitters that have about a 100' range allowing people to listen in on what's playing.
    http://www.mp3car.com/usersites/Maveric/ M.A.V.I.C. System
    Asus MB, PII 266, 192 MB Ram, 6.8" LCD, 6 Disk CD-ROM, 21 Gig HD, All-in-Wonder Video w/ TV Tuner, Irman, Windows ME, Winamp, Cobra III -- All in a custom acrylic case.

    http://www.mp3car.com/usersites/listings/ MP3car Listings - Please add to it! :)

  7. #7
    Constant Bitrate jboy's Avatar
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    It's not your soundcard, I've had 3 different fosgate amps and all of them have had to be turned up all the way to get good sound levels that match other brands of amps in my cars, even w/4V headunit outputs,
    look for a preamp that has higher output levels, some are just straight line level boosters and some EQs and X-overs have higher lever outputs. and forget the FM modulator you will notice the loss in sound quality, but you can run it backwards to your antenna to have a very short range radio station.
    If you come out talking sh1t don't try to turn around and wipe you azz.

  8. #8
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    An older (ie. original SB 16 ISA) might work well since they had onboard amplifiers. When I used to use an FM modulator (awfull!), I used an old ISA Crystalfonts sound card and it worked much better than my SB Live since it was amplified.

  9. #9
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    I keep hearing everybody telling me to not even think about the fm modulator.....but it sounds like the solution to my problems. And I think the radio sounds ok, and if it sounds better than the radio then I won't have anything to complain about.

    I really would like to have the system hooked directly to my amp, but if I can't get it to sound like I had imagined then I am going to give then modulator a shot.

    I'll let you know how everything works out. Thanks for all of the suggestions.

  10. #10
    Maximum Bitrate Skippman's Avatar
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    FM modulators are OK. Given the sound quality of the average MP3 your not talking about a lot of loss. Other audio sources from the PC (DVD) will be more pronounced. But given what you've said in this post your more concerned about volume than SQ. So I would say, given that goal, go with the FM modulator.
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