That cab was big. I didn't have a Showman cab to compare it to and I "presumed". Glad it wasn't any bigger. I was driving a '69 VW at the time. I would strap down the back seat and tighten it as flat as I could get it; move the front seats all the way up. Then I would slide the cabinet in and flop it down in the back. It just fit and took up the whole back. Any larger and I would have been done.
When I packed up to leave Little Bo's with my new Standel amp, I was really worried it wouldn't fit in my car because it was so deep. To fit it in the back of my VW, I not only had to to move the seats all the way up, I also had to tilt them forward and rest the bottom side of the cab up a ways on the back of the front seats as I slid it in. Then I flopped it over like I had with my bassman. Actually had more room around the edges but just about couldn't slide it in because it was so deep.
There was an exhaustive history of the bassman online and I think it said they changed the circuits in mid-67. The earliest silverface with the old wiring had vertical lines between the channels, inputs, and EQ sections. That was really early in '67 and there weren't a lot of those made. You actually have to check the paper chart in the head for some number to figure out which wiring your silvervace had in '67.
If you have that larger 212 cab, and you have the same circuit as my 1966 did, play it with the volume knob above 7 and you'll hear it distort. If you play it above 7 with it distorting, and you have the original Jensen 12" speakers, you will blow them. I did it three times before I decided that was enough.
I think it's a great sounding amp, just not enough power for modern gig use as an "only" rig. Great for recording though and anywhere you can use FOH if you have your own monitor so you can hear yourself. I grew up in a small town - Santa Maria, CA, and was in high school when I bought mine. I was the toast of the local musicians there when I got it because I had the first one in town and it looked so much bigger than previous Bassmans. And it was plenty loud for the amps that were in use at the time.
Wow, never thought of using a Vox Super Beatle for bass. I presumed it would ruin the speakers. And YES, those suckers were really loud. Then I got my Standel and it was really louder...by a lot.
OK, can't resist...here's a shot of me in ~1972 with my '65 Jazz and my Standel behind me next to the guitarist's Super Beatle that made me buy it:
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