Audio Database


69,800yen(one set, the 1984 release)

Based on DS-73D, it is a speaker system carrying a magnetic-shield design or AV equalizer.

The 32cm corn type Woofer which adopted the poly craft honey cam corn is carried in low-pass.
This diaphragm joined the skin material which carried out impregnation of the craft honeycomb core using the honey cam (beehive) structure used for an artificial satellite etc. as a thing excellent in rigidity, and the special resin with polyamide system adhesives, and has realized the outstanding specific modulus of about 4 times of paper. Moreover, examination is added also to resin and the internal loss is also going up 20% compared with paper.

The 10cm corn type squawker which used the CEP (carbon fiber reinforced plastic) corn is carried in the inside region.
A CEP corn adds and strengthens a rigid high carbon fiber in big polypropylene of an internal loss, is what was molded by original molding technology, and is aiming at the inside region play with high density by ohm titanium cap or adoption of the Than Gen Shal edge.

The 2.5cm dome shape tweeter is carried in the high region.
The D.U.D. structure which united the diaphragm and the voice coil bobbin with the diaphragm, and improved the high-speed response was adopted, and ohm titanium which carried out hard-facing processing of the titanium diaphragm in special atmosphere is adopted as a material.

In order to cope with the leakage flux of the speaker which has a bad influence on the screen of a CRT-television, a magnetic flow is analyzed by computer and the formal magnetic-shield design which equipped the magnetic circuit with the magnet for magnetic shields is performed.
Moreover, the bad influence which the magnetism of television has on the network circuit of a speaker is also taken into consideration, and examination is added also in the position and direction of a coil of network.

In order to reproduce visual software by the optimal sound quality in addition to the usual HiFi play, the sound quality compensation function corresponding to AV (AV equalizer) is prepared.

Sealing structure is adopted as the enclosure.

Rating of a mode
System 3 way, 3 speaker, sealing system, and book shelf type -
Magnetic-shield type
Use unit For low-pass: 32cm corn type
For inside regions: 10cm corn type
For high regions: 2.5cm dome shape
Nominal impedance 6ohms
Play frequency band 35Hz - 30kHz
Output sound pressure level 91dB/W/m
The maximum input 80W
Crossover frequency 600Hz, 5kHz
AV equalizer Three positions (Pass, AV-1, AV-2)
Level control High region 3 position (5kHz - 3kHz)
Dimensions Width 370x height 680x depth of 330mm
Weight 23kg