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Using Computer Speaker system in Vehicle (A how to guide)

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  • Using Computer Speaker system in Vehicle (A how to guide)

    I have been using my logitech x-540 5.1 speaker system in my truck for the past 2 years and am very happy with the results. It is powered via the vehicle power and using the 4 existing factory speakers. I prefer this setup for a couple of reasons. Designed for computer use, low cost and most of all the remote on/off and volume/bass control. I like this setup so much I had to find another set for my Motorhome project (A new Frontier). Found a set on kijiji used, for the same money I paid originally (I'm sure the seller was very happy). This method can be used on other speaker systems I just prefer this model. Anyhow here is how I do it.

    This it the sub box and remote
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    I removed the panel on back, this is the existing 120v power supply
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    This is the AMP guts
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    I removed the sub speaker as well to remove power supply
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    This is the 14.6v side we need to be concerned with I have circled the positive side (you can see the circuit board trace goes from wire to fuse)
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    This is the backside showing the ground side (notice the bigger traces usually a good sign it the ground)
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    Installed the new wires for DC
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    Solder the new DC wires to where the original wire went to (polarity matters)
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    Install rear panel back in place and added connectors for ease of install/removal
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    Now usually this sub sits on a floor, The Motorhome has "shag" carpet and didn't want the bass getting absorbed by the carpet so I installed a piece of wood to simulate a solid floor. Makes for good bass
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    Side view of sub speaker and reflector wood
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    For power this is the best power supply money can buy and very reasonably priced for all it does DC-DC-USB sold in MP3Car store!
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    Last step is to set your voltage output on the DC-DC-USB power supply. Just put your voltage in and click set and save.
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    I hope this helps someone to get some good sound with volume control using existing factory speakers and not break the bank doing it. SNO

  • #2
    I have that DC-DC converter in my project too, and I am very pleased with it. I like the ignition to turn it on and time delay to turn it off feature.

    Sent from my SCH-I535 using Tapatalk 2

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    • #3
      Here is a short video showing the end result. Bear in mind this is done with a crappy recording device and playing through the original 1979 factory speakers. SNO

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      • #4
        That's awesome, a sound system disguised at a V-8..... seriously though, for factory speakers in the MH, that sounds good!
        My 2007 Ford F350 Work Log located HERE

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