Posted 30 June 2008 - 08:36 PM
Can you play Tainted love by Softcell?!?!?! PMSL
Right then chaps cabling!
As everyone on here knows, the power for your mini comes from the boot anyway, so putting power to all your in car stuff is fairly easy. BUT keeping the power away, yes that says away from your rca (signal leads) is also very important!
Without going too indepth as to what happens when power wires meet signal wires Ill give you a brief, (ok so that may be a lie) run down of what to do and what not to do to get the best sound you can.
As current travels down a cable it produces a magnetic field, think of it as a cable with lots of circles around it along its length, as these circles come across another cable they will induce a voltage, it is this voltage that you hear as noise through your speakers. There are supposedly many ways to combat this, but the most basic is to use the best twisted pair and shielded RCAs you can afford. The ones with the remote wire down the middle of them are ok, but do yourself a favour and ground the remote wire each end rather than use it for its intended purpose. Run a separate cable for the remote-on feature away from you rcas and not with it. Similarly do not run amp power and rcas side by side, its only a recipe for noise. Ferrite cores are all well and good slapped around all your cables, and you can run all the suppressors under the sun, but follow a few simple rules and you will already have eliminated most of the problem.
Twisted pair RCAs, probably the best idea anyone ever had. These cables are 2 cables per channel as normal but are twisted within the shielding, this has the effect of cancelling noise naturally as induced voltages are cancelled out by the next twist along the cable. Think about it, each twist is 180 degrees to the last, giving you a voltage opposite the one you had just seen, almost like an ac signal (mains).
Power wiring, how many of you have huge power cables running straight from your battery to your amp?? How many of you actually have a fuse in that cable within 12" of the battery???? Not many I bet. Fuses are there to save your car! No one wants to have a car fill up with the fumes from a battery that is being shorted to ground, 4awg cable is good for over 100Amps, your bodywork will melt long before the cable will..............put a fuse in it, to work out what the fuse should be add up all the fuses in your amps, but make sure it doesnt exceed the current carrying limit of the cable itself. Mostly I would use a 60 or 80Amp fuse in a distribution block.