As I’m gearing up to make this N5X British Overdrive amplifier DIY kit
I was contemplating how to house it, build a cab for just the amp head, and/or then build another Thiele TL806 cabinet?
Meanwhile that Marshall has a 12AY7 V2 tube to tame the overkill madness of the Ultra Gain channel, a diy clone of the EWC SVC in the fx-loop and a Speaker Soak between amp out and speaker to be able to overdrive pre-amp and power-amp tubes while playing livingroom or even bedroom levels.
Scrolling the interwebs I found an empty housing for a Mesa Boogie MKIV combo, which looks very promising
so next, look for a speaker for it.
The MB MKIV can house a 12inch speaker and the choice quickly fell on the Celestion T4534 G12H 16 Ohm 30 Watts, 70th Anniversary edition and not only cause I found a B-stock version of it 😉
However it turns out that the 12 inch speaker hole in the Mesa housing is 279.55mm wide and the G12H speaker needs 297mm hole so gonna buy a 22 degree angled outer bit so it may fit snugly, I hope