60s I used a Selmer valve amp into a pair of Selmer 18 inch cabs (and used to fit them into a mini countryman). I’ve still got some tapes of live gigs, and the bass sounds better than it ought to.
I the 70s, short of cash, I used H/H into a Marshal angle guitar cab. Fairly horrible sound.
Much the best sounding amp that I got to use in that era, and possibly still the best sounding amp I’ve heard, was an original Music Man valve amp, into 4x12. Not specifically a bass amp, but that certainly didn’t matter. Much better than the Ampeg SVT which I got when I had some money.
In the 80s I went with a series of Trace Elliots, amps good, cabs not.