I know I'm always pushing back on this...
I know, it's cool, and expected.
but prior to meeting a few of you guys on TB, I've never known any bass player (of the hundreds I know) that has ever run an amp under 4ohms.
...
Actually, two Epi310UL's is the only config that comes to mind.
...and unfortunately, this is my situation as you know. It's frustrating, because the dual 310 is the PERFECT cab config for me both tonally and logistically... just not electrically.
Virtually every other cab I know of comes in either 8 ohm (for two) or 4ohm (for single) use.
True, but what if you have a cab you got mainly for one-cab use, so you ordered it in 4 ohms, but from time to time you wanted to pair it with one or more other cabs for those bigger gigs where you want a lot more headroom? Let's face it, we're talking massive power here, so that's not an unreasonable thought.
I have read a number of posts from people who happen to own a 4ohm cab and an 8 ohm cab, and are trying to 'make it work' by getting a 2ohm minimum head, but they would not be in the market for a high end amp, or they would just swap one of the cabs out for one of the 'appropriate' impedance IMO (i.e., it seems to be more of a 'cash availability' driver than a technical need).
Actually, it makes more sense to me to have an amp that supports more configs, that can run anything you already have, than to have to purchase near dupes of your existing cabs to match impedance support limitations of a head.
Basically, I want it to be simple.
I want an amp that can support any reasonable load I want to throw at it, and IMHO, sub-4 ohm loads are reasonable.
Especially when we're talking about 1000-2000W, even if we're not talking stereo/dual channel, we're in the zone of considering professional power amps for the juice. Pretty much ALL those very safely support 2 ohms/side. There's a reason for that. Simplicity, flexibility, and reliability. I like that. Why can't we have that with bass amps?
I'm even practical about it. I don't even care if that gets me no more usable or perceivable output (other than the fact that adding speakers always increases SPL's). I just don't want to burn the head up.
Put another way, I don't want to have to shelf two of my amps because I happen to like the way a certain speaker config sounds and works for me logistically, which is my current sitch. I'd LOVE to hear my TFB through my 310 pair. I'd LOVE to hear my LMII through the 310 pair. Sorry. No can do... and IMHO, no good reason why with all the great technology out there.
