DIATONE DS-5000 (1984) - Grandage Speaker System

Diatone is a registered trademark of Mitsubishi Electric Japan, used for audio-visual equipment and it's one of Japan's leading speaker brands. In 2016 the brand celebrated its 70th Anniversary. The Diatone trade name was used for the first time in 1946 while the Diatone DS-5000 was introduced as a flagship loudspeaker model in 1982. This mirror image construction, bass reflex system loudspeaker is made of lauan plywood and it houses a 40cm aramid fiber honeycomb cone bass, 25cm aramid fibre honeycomb bass-mid, 6.5cm boron coated titanium dome D.U.D. diaphragm for mid-high and a 2.3cm boron coated titanium dome D.U.D. diaphragm for tweeter. (D.U.D. - Diatone Unified Diaphragm). The frequency range of this loudspeaker is 20Hz to 60 kHz while the 635x1050x460 mm enclosure weighs a whopping 87 kg. A special accessory, the DK 5000 acoustic cube made of Canadian maple was sold separately (8 pcs. 1 set) as speaker vibration block. Maximum input power of the loudspeaker is 250W, impedance 6 ohm and the crossover frequencies are at 300Hz, 1.25kHz and 4kHz. The loudspeaker is equipped with adjustment for room acoustic in the form of L-pads for mid and high frequencies.

In 1987 Diatone merged with Akai Electric (AKAI) which joined Mitsubishi Group due to a financial crisis, and established the joint brand A&D (Akai&Diatone). After the disappearance of the A&D brand in 1991 Diatone adopted the form of made-to-order manufacturing.