Ashdown evo ii 900

Sounds like my Carvin BX1200, which also has two amps which can run in dual amp mode OR bridge mode by flipping the switch in back. Bridge mode links both amps together into a 4 ohm minimum. Either way, running a single cab doesn't hurt it. In bridge mode, it's just more power into the single cab. In dual mono, the second amp is dormant. I have to look at the manual to be certain.

 

Yeah it doesn't have two volume knobs so the Input GAIN and Output apply to both amps. I doubt having 8 ohm cabs cuts the power in half. Mine is 275w @ 8 ohms each and 400w @ 4 ohms. There's no way you will hurt the other amp without hooking up a cab to it though.

 

It is not safe to combine both power amp outputs into one cabinet.
In fact, it will most certainly cause damage.

You can use each side of the amp to drive a separate cabinet as there is no "mono" switch.
BTW, this is my only gripe (other than the lame compressor) with the ABM series.
Absolutley love the tone though

 

I have actually both the evo II and evo III so I have some experience. Each power amp have two speaker inputs, and EACH power amp separately handles a minimum of 4 ohm. So basically you can run as little as a single 8 ohm cab from one side, one 4 ohm cab, or two 8 ohm cab.. from EACH side. So you can certainly just run a single 8 ohm cab if you want to. However, IF you hate the people living 3 streets over, OR have a large gig, you can go as far as two 8 ohm cabs in to EACH power amp. Or...one 4 ohm cab from each side, or two 8 ohm cabs in one side and one 4 ohm in the other amp. You can get extremely creative if you like, or as basic as necessary. I have an 8 ohm VS212 i use for most practices, but sometimes I pair it with an 8 ohm ABM410 through one amp. Occasionally I also connect a 4 ohm cab through the other amp. I HOPE that helps, and I got all that info correct!

 

You are very welcome. If I can help further, just let me know! Or check out the Ashdown club