Here is the mighty Hunter S Thompson on the subject:
'One of the bass speaker boxes is starting to emit smoke ... or maybe that acrid-smelling blue haze is coming from one of the Universal 3-Way Dividing Network boxes.
But to hell with the smoke; the first time this happened, I panicked and took down the whole system - but when I took the back off the speaker box I realised it was only the insulation burning, which is not a serious matter when you have 80 speakers in one room. According to the human cinder who built this system then left town without leaving a schematic to show me how to put it back together in case a drug addict fell into the wiring, I can afford to sacrifice at least ten speakers to fire and smoke without any serious fall-off in sound quality. The break-point, he says,would be somewhere between 15-20. At that point - with 15 or 20 speakers burned into cinders disappearing one after another in balls of blue smoke - I would start getting some fuzz on the low end, and also a loss in clarity.'