In the later half of the 1960s I had a large, portable stereo with two detachable speakers .
In the early 70s ((while I was a music major with no money) the detachable speakers crapped out on me and without a great deal of funds or tools I constructed speakers made with matched 8” speakers with wizzer cones in the middle, and mounted them in somewhat reinforced cardboard boxes.
Mid 1970s Generic bookshelf speakers
Later 1970s. RTR Tower speakers front and rear channels
1981 Magnepan MG-1 front speakers / Generic bookshelf rear speakers
1982 Magnepan MG-1 Improved front speakers / MG-1 rear speakers
2015 Magnepan 1.6 front speakers / MG-1 Improved rear speakers
2016 Magnepan 1.7 front speakers /1.6 rear speakers (All 4 - Mye Stands)
2017 Magnepan 1.7i front speakers /1.7 rear speakers (All 4 - Mye Stands)
2019 Magnepan 3.7i front speakers /1.7rear speakers (All 4 - Mye Stands)
2020 Magnepan 3.7i front speakers /3.5 R modded rear speakers (All 4 - Mye Stands)
Unless an accident happens, these will be my lifetime speakers
Also - from 1985 to present - 1 pair of custom built subs with 15” woofers, crossed over at 40 Hz