It's exactly as I said before - Positive and Negative. That's it. Simple. Done. End of story.No...What does that mean? I thought it might be as simple as CAT5 cabling, ie, one end in the computer/speaker, and the other end in the switch/amp... I kind of assumed that the different colours might be to help identify/differentiate cables going to different channels ie, red = front/left and black = back/right etc...
Swapping positive and negative won't damage a speaker, but it will invert the phase.How much damage can I do if I get this wrong? Worst case is blowing up a speaker rather than blowing up me or the house right, there's no real power involved?
Your loudspeakers are trying to replicate the effect of sound waves. The cones move forward to create the pulses of energy. They then move backwards in recovery ready for the next wave to be generated. Swapping the polarities on a speaker means the cone will be moving in the wrong direction all the time. With a single speaker you'd still hear sound, but it would be out of phase with the signal that was generating it.
Reversing the polarity of one speaker in a stereo pair messes up the bass. The two cones moving in opposite directions causes cancellation. A good portion of the bass is muted.
The advice is simple. Wire up red to red only, and black to black only.
Overrun - Played so loud that there's distortion in the speakers or the amp overheats.On this note, I read a classified ad that said the AV reciever had never been 'over-run'. What on earth would that mean? Can I not just leave it on for as long as I want it?
If the site gives a cable thickness - often quoted as A.W.G. where a smaller number means a thicker copper conductor - then that's a start.I get that thicker is better, and more shielding is good, but I've no idea how to actually quantify that. Unless I know what spec line to check out, I wouldn't know if I was paying £2 for a £10 cable, or £10 for a £2 cable, if that makes any sense? Obviously different companies have different costs/margins etc