Very Boomboxes from 1983. Well at least the RM100 is 1983, I'm not sure about the PC-70JW, but it's a very similar setup so I'm guessing it's close. I love the bass on the PC-RM100. I do need to get a belt for the cassette player on it though. But here's the pics. Enjoy.

very nice pieces

The RM100 is a really neat box, I love it! In fact, I want one... now!

those are beautiful! the pcrm 100 is a brute a lot better sounding than most would think .

with retro