[quote name='Slipperydick' post='971515' date='Sep 29 2010, 11:15 AM']Just had a quick 'skim' through this thread, interesting.
Just a thought, if your using 2 cabs with one head, theres alwys the chance of a dodgy lead, so one cab not working, you wont neccesarily notice with a band playing at full tilt, all the power goint to the one that is working could result in knackered cab. Had it happen to me years ago. so its always worth Checking your leads by pulling em one at a time, and having a good tug at the connections while you listen for anything untoward.[/quote]
If you're running two cabs of the same impedance in parallel and one fails, the remaining speaker will continue operating at about the same power level as before. There may be a slight increase in power delivered to it due to the fact that many power amps are not quite able to deliver twice the power when load impedance is halved. The important thing though is that if one cab fails, the load impedance increases and so the amp delivers less power. The remaining cab does not "soak up" the power previously delivered to the failed cab.