Well...I toured with a 215 rig from 1971 through 1973 and then gigged with it until 1976 when it was stolen along with my 1965 Jazz Bass.
It was a Standel MCIIb/SAM30b piggy-back amp. The MCIIb was the super-light head which only held the preamp. The SAM30b was the very heavy and deep 215 powered-speaker bass reflex cab with 4 round ports stacked vertically just to the left of the speakers. Those ports really put out a LOT of air (would flap my bell bottoms). It held two CTS 15" speakers with HUGE magnets and had two 100-watt amps inside. Each amp drove its own speaker. Those 15" CTS speakers were perfectly matched to their amps. So was a 200-watt set-up and was ungodly loud.
Don't really have a good picture of the amp but you can sort of see it here. This is sometime in 1972. If I still had it and my '65 Jazz, I would probably still be using both. Notice the goose-neck on the mic. That made it easy to position the mic without using a boom...hmmm...maybe I should get another one of those... All the gear in this picture was stolen that night in 1976, which put a quick end to my gigs for the next 20-years. I was married with two kids by then and money was scarce.
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Great pic Dan. I found one of mine from my “salad” days not to long ago. Yikes!
Sorry for the loss of gear.