Toshiba RT-8440S
The RT-8440 is from 1980, and features an alarm clock and 3-way speakers. It measures 45cm wide, 27cm high (or 35cm with the handle up), and 15cm deep. It takes 8 D-cell batteries, plus one AA for the clock.
The RT-8440S, also called the BomBeat 12, is a very rare Toshiba with 3-way speakers and an alarm clock.