What your thoughts on the length of cable from amp head to cabinet? Not for sound but just for the issue of extra cable length. I have a 3' foot cable but the distance probably needs a foot or less. I'm thinking issues of accidentally catching the cable on something or the head falling... Should I use the shortest possible? Any logistical / accident experience? Thank you!
If you have a shorter one on hand, use it. If you dont, I dont think you are going to see any difference with a shorter cable.
I use 2-3 foot speakon cables for my head and 2 cabs. I have used 25" cables as they were just lying around, but I tend to use 3-5". If I bougt new cables they would be 5" as my 2" cables are JUST big enough.
I use whatever's left over after wiring the sound system. Sometimes that means having ten foot cables tucked behind my bass cabinets. There's usually a wall behind them, so very little chance that anyone would ever trip over them.
You have to balance length, gauge, impedance, and wattage. Wikipedia's chart omits wattage, but gives a rough idea: http://en.wikipedia.org/wiki/Speaker_wire#Wire_gauge Despite what audiophiles say, sound isn't a concern, but you do want a cable that can handle the wattage. For us bassists, 14 ga. is plenty for all but the most extreme applications (long cable run, humongous wattage). There are charts that include wattage. I couldn't find one but maybe someone else will. P.S. Props to the Wikipedia article for debunking some audio myths (e.g. skin effect).
Questions. When using the TC bam 200 watt amp and two separate speaker cabinets that have 8 ohm peavy BW speakers, do the speaker cables need to be of the same length ?
No, assuming neither is unreasonably long, like 20 feet. I used to have a rule that the cable had to be long enough that it wouldn't get yanked if the head fell off the speaker. That was back when heads weighed something. It seemed preferable to let the head hit the ground than for the cable to catch the fall. What I still don't know is if that was a smart idea, or a dumb one.
Same length? No but within reason. Three feet and six feet won’t matter. Keep them as short as necessary. This keeps them neat and minimizes strain on the connectors.