Wow, maybe I'm just def... but i have a crown XTi 1000 pushing out to an ampeg 4x10 and a peavey 15 and I barely get enough volume to keep up with my drummer and my guitarist's vintage dual showman. In fact it's been an incredibly frustrating experience dumping money I don't have into gear i can't afford to get what seems to be a minimal gain in db. perhaps I'm doing something wrong.
And about a half dozen other posts on here.
Vintage Showman = 4 - 6L6GB tubes in there barking up a storm at 85 watts through a couple D130 JBL's if he's got the good stuff. Reach down and hit the BOSS TONE and he's making about 130 DB of screaming real live get loud music maker. Don't ever underestimate the power of a handfull of dual showman heads and cabinets.
We used showmans as PA's when we were done with them as guitar amps.
When I was a kid before our Guitarist got his 100 watt Marshall stack I was having a heck of a time keeping up with him with a 67 Bassman. I did OK but I didn't scare anybody.
Our Drummer had about ten sticks stuffed in a holder on his bass drum if that gives you an indicator of drum volume.
What I needed at the time was an SVT, but I didn't have one.
Yeah Jimmy can play with no power but he's the only bassist on the planet who can. He has magic finesse of something. His B-15 has special MOJO.
As far as your 1000 Watts. When you compare that to a tube bass amp you have about the equivellent power of about 200 Watts... The 410 has poop, but the 15 doesn't necessarily and drags several DB from the 410. If you were powering a single 810 with that head you would probably be OK.
As far as the OP goes with his 90 watts of Solid State power you've got about the equivellent poop as a 20 watt tube amp.
Why does a SS head get rated at 3-4 times the equivellent power as a tube head? They didn't used to back in the early days. BUt they need to be able to handle the transients and peaks where a tube can absorb that stuff.
Personally I think it is a rip off to call an amp 1200 WATTS RMS, when it is more like 1200 WATTS RMS PEAK. Which is a totally bogus conflicting non-existant rating.
In reality you need about 3X the power in equivellent amplifiers to "Keep Up" with the rest of a band. SO if the guitarist has a 1/2 stack Marshall you better have an SVT and 810 rig. Full stack and two...
90 watt behringer combo? Well Marshall mini rig might drown you out.
BOB