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i dont want to tread on any toes here, but there are a few glaring errors in that article.
first is the bunching together of signal and power cables in the loom. this is a big NO-NO. signal cables, even sheilded ones, are prone to interference from power cables running alongside them. at the very least, they should only come in close contact if they can be crossed at 90 degrees to each other, but ideally they should be seperated at all cost. If they run parallel and in close contact they will create an audible hiss at high volume. not ideal. this goes for source-to-pre-amp and power amp-to-speaker signal cables. none are exempt
second problem is the use of long ground wires in the loom. all audio systems need as much current as they can get and as all wires have a resistance that increases with length, long earth wires are a waste of current. the cars body is one large earth point. all factory electrical components are earthed as close to source as possible. the same should be done with audio equipment. a short, thick wire from the ground contact, direct to teh body should be used to minimise current loss.
correcting both the above points will return a marked improvement in sound quality, regardless of the quiality and power of the equipment used.
its all in the setup.
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