I’m primarily a fan of the original Sundholm era gear, I go as far as the silverface Coliseum solid state and the tube Model T, so that’s where my knowledge is greatest, but you might want to look over this site:Eh...any, and all, the more the better for anyone who cant find one out in the wild I guess. I was sort of replying to the post about the 215BH cab but forgot to put the quote in.
Sunn 2x15 (200s,1000s, etc) plans, schematics
The BH angled port is a slightly more complicated and larger version of the circa ‘72 215B(although there was a later white baffle/red logo version as well, different in its own way); to have one built would be labor intensive, I would think. But if you Google Sunn 215BH and look at images, I’m sure you or a builder could figure it out. Here’s some further discussion from that site…
QUESTIONS ........ SUNN 215SH 215RH 215BH BASS CABINETS
The outside cab dimensions would be 45.5”Hx27”Wx20”D. My 215B is 40”H, 24”W, and 15”D, same as the classic 200s(but with an entirely different porting design), and very manageable.
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