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Interfacing aftermarket receiver to Monsoon system in VW?
What do I need to do in order to feed the outputs from a typical
aftermarket receiver into a Monsoon sound system? Specifically, I've been told that some sort of adapter circuitry is (or once was) required in order to convert the normal output level from a typical receiver into the different (lower?) level expected by a Monsoon amplifier. Exactly what sort of adapter would this be? Can it be had as a prepackaged module, or would it need to be a custom-built circuit? I've also been told that "newer" Monsoon amplifiers have extra circuitry to sense the incoming level and adjust automatically to accommodate a standard receiver without external compensation. And, indeed, the aftermarket (Kenwood) receiver installed in my 2004 VW Golf appears to have been put in without any adapters of any kind in the custom wiring harness (the installer simply spliced wires without using any extra modules or components), and it works OK for the most part. However, I'm having intermittent problems with distortion that comes and goes on one channel only (front left), and one of the many possibilities I'm considering is that there might be a problem with the level-sensing logic allegedly in my Monsoon amp. I probably have no hope of getting VW to acknowledge this problem -- they would surely observe that the amp worked just fine with the factory-original radio, thus "proving" that the problem must be in my aftermarket receiver -- but one possible workaround I'm considering is to install whatever sort of level adapters have traditionally been used to interface a typical aftermarket radio to a Monsoon amp, and see if the issue is resolved by changing the signal levels to what the Monsoon unit was originally designed to accept. So, if I were to decide to do this, what sort of adapter devices should I be looking for? Rich Wales === Palo Alto, CA, USA === http://www.richw.org === http://en.wikipedia.org/wiki/User:Richwales |
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