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Thread: Carputer to Stock HU with FM Modulator

  1. #1
    Newbie tplbi's Avatar
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    Carputer to Stock HU with FM Modulator

    I have a 2005 Mitsubishi Eclipse with the infinity sound package. I'm think I'm going to hook the PC audio up to the stock HU using a FM Modulator because it does not have aux input and if I replace the stock HU I will loose the steering wheel control functions and the separate LCD functionality which displays the clock, ect. The question is, should I use a good sound card or use the headphone jack on the PC to output audio? I dont think it will make a difference since I will loose quality at the FM modulator. Suggestions welcome!
    2005 Eclipse GT
    Planning for Carputer...
    Xenarc 700IDT purchased.
    Got an Inspron 1100 laptop with broken screen, so its hooked up to the xenarc.
    Using FM modulator to hook up to stock HU/Speakers.
    Need power solution and then I can install.

  2. #2
    Neither darque nor pervert DarquePervert's Avatar
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    Does your factory stereo have a cd-changer input?
    If so, there are adapters you can get that will enable you to use that as an AUX input.

    FM modulators have issues, and they all result in loss of audio quality. Also, FM modulators suck in urban areas, because there are so few unused FM frequencies available to use with a modulator.
    Have you looked in the FAQ yet?
    How about the Wiki?



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  3. #3
    Newbie tplbi's Avatar
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    The factory radio does not have cd changer input. This is why i think the fm modulator is my only descent option other than getting a new HU. Also, from what I have read, there are some fm modulators that disconnect the regular fm antenna when the unit is turned on so that there is no interference. I am talking about the hard wired modulator, NOT a wireless transmitter. orrect me if i'm wrong
    2005 Eclipse GT
    Planning for Carputer...
    Xenarc 700IDT purchased.
    Got an Inspron 1100 laptop with broken screen, so its hooked up to the xenarc.
    Using FM modulator to hook up to stock HU/Speakers.
    Need power solution and then I can install.

  4. #4
    Neither darque nor pervert DarquePervert's Avatar
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    A wired modulator is better, but there is still quality loss.

    A casette adapter (assuming you have a casette player in your factory stereo) is another option, as well.

    Unless you've got hearing problems to begin with, you're more than likely not going to be satisfied with the quality from the FM modulator, and will end up getting a new headunit at some point.
    Have you looked in the FAQ yet?
    How about the Wiki?



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  5. #5
    Newbie tplbi's Avatar
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    I was afraid you would say that

    Ok. I realize there will be quality loss with this fm modulator approach. Am I correct to assume I will get the same end quality from the regular headphone out port on the laptop and from the audigy soundblaster card, assuming they are both connected to the fm modulator and then to the stock HU?
    2005 Eclipse GT
    Planning for Carputer...
    Xenarc 700IDT purchased.
    Got an Inspron 1100 laptop with broken screen, so its hooked up to the xenarc.
    Using FM modulator to hook up to stock HU/Speakers.
    Need power solution and then I can install.

  6. #6
    Self proclaimed spoon feeder TruckinMP3's Avatar
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    Quote Originally Posted by DarquePervert View Post
    A wired modulator is better, but there is still quality loss.

    A casette adapter (assuming you have a casette player in your factory stereo) is another option, as well.

    Unless you've got hearing problems to begin with, you're more than likely not going to be satisfied with the quality from the FM modulator, and will end up getting a new headunit at some point.
    I do not notice any loss of quality with the wired FM modulator.
    TruckinMP3
    D201GLY2, DC-DC power, 3.5 inch SATA

    Yes, you should search... and Yes, It has been covered before!

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