I've used my LMII with and Ampeg 810 fridge numerous times, and it had more than enough (ie: pants flapping) power/volume if needed and sounded great. Used the 810 for outdoor or large indoor gigs, otherwise I use 2-2x10 vertically stacked GK cabs.
My LMII has always sounded great with whatever cab I've used it with. Never used it with any acoustic cabs though.
It'll handle the Acoustic b810 volume wise unless your stage volume is painfully loud. Soundwise, I dunno.
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