Audio Database

The

DIATONE DS-28B
45,000yen(one set, the 1974 release)

Description
 
Tough 25cm corn paper is adopted as a Woofer. Moreover, in order to lose the natural frequency of the frame itself, the firm die-casting frame is used. Furthermore, the casting magnet of the Al Nico system, U type roll edge, etc. realized the play of the heavy low-pitched sound which is full of a feeling of a lively motion.

The 10cm squawker with which the design is performed according to the CATENA Lee curve is adopted as a squawker. With the carved corn which gave curvature outside a little, V type crossing edge is used for edge.

The tweeter has adopted the polyester resin system as the material of a diaphragm, as a result of examining enough by a laser holography.

Cabinet structure is used as an encapsulated type and it is made the distributed vibration type which distributed the reinforcement unevenly.
Moreover, all the joints are firmly joined with hardness woodwork technology. Thereby, vibration mode is decentralized and the resonance in which a cabinet resonates greatly in a certain specific zone is difficult to take place.


Rating of a mode
System 3 way 3 speaker, a sealing system, and a book shelf type
Use unit For low-pitched sound: 25cm corn type
For inside sound: 10cm corn type
For loud sounds: 3cm dome shape
Nominal impedance 8ohms
Play frequency band 40Hz - 20000Hz
Crossover frequency 800Hz, 5000Hz
Output sound pressure level 91dB/W
The maximum input 50W
Level control Inside sound: Three positions (800Hz - 5000Hz)
Loud sound: Three positions (5000Hz - 20000Hz)
Dimensions Width 345x height 590x depth of 270mm
Weight 15kg