JVC RS-WP1 Backpack
This RS-WP1 is a backpack-style boombox from JVC. It has a CD player, tape deck, digital tuner, two 4" active speakers and two 4" passive radiators. According to the owners manual, it produces a minimum of 12 watts per channel between 150 Hz and 15 kHz, with no more than 10% total harmonic distortion. It measures 411mm wide, 456mm tall, and 234mm thick. It weighs 5.1 KG without batteries, and 5.9 KG with eight D-cell batteries.