What are your thoughts on the "Edsels" of the audio history?

8-track wasn’t a failure. It served it’s purpose during the time of AM radio.
Homemade 8-tracks sounded better than high speed prerecords. Just like cassette mix tapes and CD burners CDR’s. The splice tape held together long enough for cassette to get established.
If you had a lathe you could cut better sounding limited edition vinyl like that guy in London.

4 and 8 track tapes.. My father bought an Edsel.. Took it to Spain, sold it for more than he paid... We came home in a VW of all thing.. 1964. One or two in the whole state of Alabama in 1966. George Wallace's wife was Governor. 

Record players in cars and REVERB...

Regards..

Bertagni speakers. I bought a pair of SM-100's at GoodWill cheap. Sound quality not good!

Soundcraftsmen equalizers. Did more harm than good.