There's an article in BP (AUG '00) that shows how to make your own cable to run speakers in series(instead of rewiring your speakers). I would like to run four 4 ohm enclosures for mains to increase the sound level without using another power amp. Current PA setup: 500W per channel amp 2 15 enclosures 2 monitors Has anybody ran a similar setup? Pros and cons of running in series? Why aren't these cables commercially available?