I'm wondering if the 30hz bottom on the BBII makes a significant difference with the feel on stage of the cab versus the 37hz bottom on the SM, SC and BT models.
IMO a big, deep, woolly low end is not what I think of when I imaging my best bass tone. I want my playing to be clearly heard as much as felt.
I spent 10 years with Bergantino cabs and they are in my top 5 cabs ever built. I moved to a BB2 and soon discovered the big low end was not at all what I wanted. The low end on the Bergs is very tight and punchy so the BB2 was the wrong choice for me. I spoke to Alex at BF and he said he wouldn't have recommended a BB2 for me at any time. So I bought an SC which sounded so good I went right out and bought a second one. The low end is still "bigger" than the Bergs but I don't care about that, my bass now sounds full, fat, punchy and huge. Can I emphasise that. . . . HUGE. I can shake the room, shake the stage and every note can be clearly heard.
It's only taken 50 years, but now with my Lull P, Sadowsky J and a TH500 I've finally got the sound I've always wanted.