Here's a cool one, Sony's Direct Drive Patent https://patents.google.com/patent/US4630149A/en?oq=US4630149A [ATTACH]
The first portable CD player? Not in 1999... https://patents.google.com/patent/US6041023A/en?oq=us6041023 [ATTACH]
Stereo sunglasses! https://patents.google.com/patent/US5164987A/en?oq=US5164987 [ATTACH]
Radio thermal headband, this guy must never have worked out. https://patents.google.com/patent/US4648130A/en?oq=US4648130A [ATTACH]
Pavel's Batman Belt Walkman Player https://patents.google.com/patent/US4412106A/en?oq=US4412106A [ATTACH]
This is for Epicure Speakers but it's still neat. https://patents.google.com/patent/US4289929A/en?oq=US4289929A [ATTACH]
Could this be the very awesome AIWA CS-M1 stereo microcassette player, made by Olympus?...
I'm not sure who this Japanese Brand is but it's from 1975. https://patents.google.com/patent/US4070546A/en?oq=US4081850A [ATTACH]
The first "compo" box? https://patents.google.com/patent/US4081850A/en?oq=US4081850A [ATTACH]
This one is kind of interesting, a jukebox that records onto 8-track so the customer can take it with them....
Early Marantz Boombox https://patents.google.com/patent/US3943564A/en?oq=US3943564A [ATTACH]
I have another thread below on Walkman Patents and old magazine articles on personal cassette players, I thought it would be a good idea to split...
I've refoamed a few, I think you can use a 1.5 volt battery to get the speaker to move to check for coil clearance but it's been years. I'd check...
I wonder if this is a series put out by Sanyo using very shiny bright colors and a plastic finish normally associated with cheap toys. I bought a...
You do have to hit play so if there's any broken bits you'll hear them turning around.
It's funny that the rarest Japanese Made Boxes still have English Labels, when you find one with Japanese Labels then you have the rarest of the...
Is the coil rub from the surrounds breaking down? I remember years ago redoing some Polk Speakers that had the infamous detached magnets. I had...
Are you using the cassette that has the mini-plug on it? If the internal Ion Batteries start going bad they don't sound very good, I had a...
I wish I had know about this guy a few years ago, look at the price the RD-XM1 are getting now....
I just bought a field recorder that has broken belts, there's no radio so I don't have a way to test the sound (or power) to make sure there's not...
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