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How to integrate HU & Speakers with PC+AMP - totaly lost

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  • How to integrate HU & Speakers with PC+AMP - totaly lost

    Can I route the HU output to the pc or the external AMP and utilize one set of speakers. I got rid of the stock speakers about a year ago, they were replaced with good ones.
    I can't get rid of the HU since it is a "GM thing", so, I need to hear the warnings and also utilize the AM/FM bands of the HU.

    The question is, how to wire the HU (with its built in amp) to the PC (USB audio device) and the external AMP (did not get it yet). Is it doable?

    Thanks guys

  • #2
    Thats a question that you should ask at some GM boards for your vehicle. What you're looking for is a way to get an "aux-in" or auxilariry input into your GM HU. That way you can feed the computer signal into the HU and through the amps.
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    • #3
      There is no aux-in in the HU, matter of fact, I can't touch it due to the fact that it is connected to the data-bus, removing the HU will disable other functions.

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      • #4
        Just go to some audio website, and search for Auxillary Adapter for your car.
        I am sure there is one for GM.
        PIE is one of the manufacture of those devices.
        2004 Matrix XR A7N8X-VM/400 AMD XP-M 2500+, DS-ATX
        89 Supra Turbo P3 [email protected]/Abit BE6 II, Alpine M-BUS Car2PC.
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        • #5
          None available for the Bravada 2002, the Auxiliary Adapter requires either an XM ready HU or a CD Changer, I just have plain vanilla HU with tape and a CD player, I went to PIE web site, nothing to be found.

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          • #6
            recheck with the dealership, but also check with audio shops too.

            over here, we would get people walking into the shop asking about aftermarket radio's for GM vehicles. We told them they would lose their door chime (thats all that was hooked up through the radio) They told us the dealership told them the airbags were wired through the radio! that has to be illegal. not to mentoin a liw, and totally rediculous.

            if you drive a 2002 GM, you *should* only lose the door chime switching to aftermarket. but definitely doublecheck that, your model might have other functions.

            other companies make adapters, PAC is another adapter company we use over here, But it depends what you want or need.

            It happenes every time in our shop:

            us: "you will loose your door chime"
            them: "what? I CANT loose my door chime!"
            us: "seriously, its annoying as hell, we reccommend the aftermarket radio even as an upgrade because you lose the chime."
            them: "no, I have to have a door chime"
            us: "we have a PAC adapter that lets you keep the door chime. its really loud though, so we have to wrap it in carpet to muffle it. and thats $50"
            them: "****. well, I NEED my door chime, I will pay for it."

            *install an aftermarket radio in their car*

            *one week later*

            them: "can you pull that door chime out? its annoying as ****"
            us: (I told you so) "absolutely we can pull out the door chime adapter, just fill out this work order"



            moral of the story: know exactly what functions are routed through the radio, and know if you can live without them.

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            • #7
              Metra make a GM databus adapter. Their website is www.metraonline.com . The part that I am talking about is NOT listed on their website, but I have installed it many times. It has a black box that has the chime built into it. If you can't find it, PM me and I'll get you the part number. If you still can't get it after that, I can order it and send it to you. You should be able to order it from any car audio shop though.
              1993 Mazda RX7
              Dell Inspiron 8100 (laptop w/docking station)

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              • #8
                Thanks guys, I will print this post and take to my local shop hopefully they understand and order the part as per your recommendation.

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                • #9
                  Here's a link to the part with pic and part number.
                  http://www.autotoys.com/x/catalog/ME...SS_p_2423.html
                  1993 Mazda RX7
                  Dell Inspiron 8100 (laptop w/docking station)

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                  • #10
                    I think you have the same/similar HU I have on my Toyota Matrix which is built by GM/Pontiac/AC Delco. Asking for an Aux adapter for the HU at Toyota dealer, those guys behind the counter just look at you and like "what the hell you talking about?". Same thing at Pontiac dealer. None of those after market companies make them. They have almost everything but except Pontiac Vibe/Toyota Matrix.
                    For now, I can just use a tape adapter since my HU has a tape player.
                    2004 Matrix XR A7N8X-VM/400 AMD XP-M 2500+, DS-ATX
                    89 Supra Turbo P3 [email protected]/Abit BE6 II, Alpine M-BUS Car2PC.
                    Y2K Accord Dell GX150
                    RoadRunner is the best FE PERIOD
                    EmoRebellion is a SCAMMER

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                    • #11
                      David88vert, thanks for the link.
                      MatixPC, I hear ya, my GM/Olds dealer did not know what I was talking about, he sent me to a local shop that does installation work for the dealer, the guy at shop was installing a DVD player to a minivan that did not have AUX-IN, he was using FM Mod!!!!!! to interface the player to the HU. Go figure.

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                      • #12
                        I am using FM mod in a 97 Suburban, It works great. The OEM HU does speed controled volume adjustment. By using the FM mod that feature still works.
                        No loss of quality.
                        TruckinMP3
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                        • #13
                          agreed, FM modulation has a seriously bad reputation on this board which surprises the hell out of me, considering its a board of MP3 users.

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                          • #14
                            OK, the last two posts put me back to square one, I was under the impression that FM mod is bad that is why I am going through the hassles of tapping into my HU.

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                            • #15
                              MP3 is bad, it degenerates the audio quality of a CD for the exclusive benefit of saving hard drive space.

                              But you still listen to them.

                              there is nothing wrong with FM modulators whatsoever. you might hear a difference if you have a hi-fi stereo in your car, listening to a low noise source well recorded and stored.

                              the noise floor alone in a car is just too rediculous to even consider an FM modulator a bad choice to play MP3's or DVD's.

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