So a friend of mine throws a pint of beer into my Yamaha amp, whereupon it burns out completely. I had this amp set up extremely sweetly. He buys me a replacement - I plumb for the Azur 540R because of excellent reviews. Here's the problem; have wired in my speakers in every possible combination from the Yamaha NS-P300 package. My two fronts and centre work fine, albeit they sound thin as hell, but presumably I can sort this later. There is nothing from my rears. They are dead. The rear speakers don't have colour-coded leads; instead, they're both brown with one lead having a thin white line; the manual does not indicate which is + and which -. I *think* I've run them through every possible permutation. The Azur manual, meanwhile, tells me that the red speaker plugs are positive: however, the plugs aren't uniformly red: they're multicoloured. Does this mean that they remain positive? The impedance of the Yahama speakers is 6ohm. Should be okay - so while I get life in the front of my set-up on dvd optical, every other connection is dead. Indeed, I can't even get the radio to work!! Any ideas?