Aiwa CA-30
The CA-30 was a 3-piece boombox from Aiwa. I have seen at least 3 different colors of it - Red, black, and silver. It measures 612 x 202 x 193mm. Its woofers are 12cm and its tweeters are 4cm. Like many Aiwas, the tape deck was very stable, featuring a wow and flutter rating of only 0.045%, which is very good for a boombox.
A copy of the service manual can be purchased HERE.
Photographs courtesy of Paja1969.