Wow, they still made them through 2016. In the olden days, my cousin thought he had stereo bragging rights with the original models. Bose had his marketing hype in full swing even then. My cousin was dogged with them, even though the speaker elements (cheap) blew out frequently and he wrecked a few amps with them. I pissed him off by laughing at him about them.
I imagine the subsequent models became more reliable.