Reading some other replies reminds me that my first "amp" was actually a big old wooden tube radio/record player with a 6x9 inch speaker I picked from somebody's trash. I removed the turntable and plugged in the harmonica piezo pickup I had on my Upright Bass bridge. Probably around 1962.
After the mid-60's Ampeg SB-12, starting in 1970, I had to step up to
- a tall padded Kustom with three twelves (barely fit in my '70 Opel Wagon), followed by a
- Sunn Sorado tube amp with one, then two 2x15 cabs, after which I got a
- high power Peavey bass head and built two 18" folded horn cabs modeled after Peaveys, with JBL speakers, and after they were fried in a club fire, got
- Acoustic 450, then added a 370 which I biamped with a Acoustic 2x15 and Bassman 2x12 with a Biamp electronic crossover.
- Later went to a Polytone, then a MusicMan 1x12 combo around '79.
...and I wouldn't trade any of my more powerful and far lighter modern gear for any of it!