Toshiba RT-8700
This RT-8700S (also called the BomBeat X1), was a 3-piece boombox from Toshiba. It was introduced in Toshiba's 1979 catalog. It looks very similar to the RT-8710S. It's very unique, because its speakers can be rotated on top of the unit, or to its sides. These speakers include 12cm woofers and 5cm tweeters. Output is 2x4W RMS.
The service manual can be purchased HERE