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Thread: Any VW MKIV owners run their PC direct to the Monsoon amp?

  1. #1
    Newbie
    Join Date
    Apr 2004
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    2

    Any VW MKIV owners run their PC direct to the Monsoon amp?

    I've been looking all over for any info on this. I'd like to remove my head unit but keep the factory amp in the back ('04 Golf) with the PC being the only source running to it. The info I need includes: (I put what I know so far as well in case it helps others)

    - How to power on/off the amp. (Not quite sure where to begin for this. I'll be using that Opus 90w power supply. Can that provide what's needed to signal power-up?)

    - How to run in the line level from PC (this I found at vwvortex.com):

    Gray Amp connector (Speaker level Input from HU) Most people tap the rear lines for Subs.
    14 +LR
    15 - LR
    17 - RR
    18 +RR
    20 +LF
    21 - LF
    23 + RF
    24 - RF

  2. #2
    Maximum Bitrate BoraXP's Avatar
    Join Date
    Jul 2003
    Posts
    657
    pretty sure you need the head unit for the amp
    not sure though

    try buying a wiring harness/install kit for an aftermarket headunit for the monsoon connection

    the pinout it provides would help you out significantly

    Quote Originally Posted by Semler
    I've been looking all over for any info on this. I'd like to remove my head unit but keep the factory amp in the back ('04 Golf) with the PC being the only source running to it. The info I need includes: (I put what I know so far as well in case it helps others)

    - How to power on/off the amp. (Not quite sure where to being for this. I'll be using that Opus 90w power supply. Can that provide what's needed to signal power-up?)

    - How to run in the line level from PC (this I found at vwvortex.com):

    Gray Amp connector (Speaker level Input from HU) Most people tap the rear lines for Subs.
    14 +LR
    15 - LR
    17 - RR
    18 +RR
    20 +LF
    21 - LF
    23 + RF
    24 - RF

  3. #3
    Maximum Bitrate jusatry's Avatar
    Join Date
    Nov 2003
    Posts
    862
    if you need to power up the amp (assuming its the same as my 03 A4 with bose), you just need 12V with almost no amps. run it into the switched 12V line. as far as tapping the rear lines, you can use radioshack wire taps and run the spkr level through a line level converter to get line level sound for your sub/amp.

    Post back if you have more specific questions.

  4. #4
    Constant Bitrate P4_2.66GHz's Avatar
    Join Date
    Feb 2004
    Posts
    217
    You cannot use speaker level output to tap into. It is only good with LLC (Line Level Converter) to use with a sub amp. It works one way and not the other - from speaker level to line level.
    What you need to find is how the amp is controlled and what kind of input does it take. Where does the volume change - in the amp or the headunit (some hedunits control amp digitally)? Is the input balanced (+/- with a mid point in the ground) or unbalanced (- is the ground)? PC's output is unbalanced.
    Get on VW forum and ask them. I'm sure plenty people replaced their headunits and tried to keep the stock amp. Essentially, this is what you're doing.
    The remote turn-on is not hard. You can simply connect it to the ACC wire to get you going, provided there is a remote turn-on input on the amp.

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