I'm a bit disappointed. In my mind a modern amp should be capable of operating into a 2Ω load. It's one of the reasons I've stuck with pre/power rigs since the Eighties. Driving two 4Ω loads is natural for me. An 8Ω plus 4Ω (2.67Ω) is less so. Still I do wish Jeff well with this product, I'm certain it's going to be a delight!!
Hopefully, w/o getting too geeky, after reading some of
@DukeLeJeune discussing impedance of various drivers, you might check with Andy at Acme and ask about the range of the loading for the cabs you have.
If they are a real 4 ohm or higher and you don't need to drive them hard (their lack of efficiency is working against you here), you'd
probably be safe with the Magellan 800 driving the pair.
EQing & average power levels come into play, so it may be too much zen archery here for you to feel safe.
I'm not recommending anything one way or another.
From what I got from what Duke was saying is that a lot of modern drivers are actually lower in their impedance curve than what you'd think from their rating.
So instead of a 2 ohm load that a bassist thinks he is running, it is actually below 2 ohm.
Recommending the 2.67 ohm minimum is a way of offsetting for those situations and allows safety to have its proper place WRT over-zealous marketing.
One weird thing about TC Electronic's marketing with the RH series: fast & loose with the power ratings, but if you want to drive a 2.67 ohm load, they had the caveat that they had to be TCE's cabs - I'm thinking the above is why they did that.
Glad I could muck up a good thread here ... j/k.
Definitely take the above with with a few pinches of salt.
