FR for MI use

yep - a neo version would make 4x 10 which would not be horribly heavy. My "K10" is 15mm Baltic birch (difficult to find in the US these days)

I had a Traynor 6x 10 closed box cabinet which got pretty loud with guitar and YBA 3A - not much bottom. Those Traynor amps sounded gorgeous back in the day with their short folded horn 18" cabinet. If you know of an accurate plan for an Acoustic 360, let me know. I can barely lift my lightest bass nor get it into position - atrophy - frozen shoulders, etc. My heaviest is probably an aluminum neck Kramer with maple body. These days things like Glarry can offer great value.