DIATONE DS-700Z
¥ 65,000 (1 unit, sold in May 1992)
Commentary
A 3-way speaker system that inherits the technology of the DS-1000Z and aims for a high-density, high-resolution system with warm sound regardless of setting conditions.
A 27 cm cone type woofer is used for the low range.
The New Aramid Hybrid Honeycomb Diaphragm is used for the diaphragm. Weight reduction and high rigidity are achieved by using organic fiber aramid and inorganic fiber amorphous silica with approximately 15% higher strength than conventional ones as intra-ply structure.
In addition, the H. D. suspension that suppresses the inherent high-order resonance is adopted at the edge, and superior braking force is obtained.
The mid-range uses a 10 cm cone type unit that uses the same New Aramid Hybrid honeycomb diaphragm as the low-range one.
H. D. suspension is adopted on the edge part, and in addition, a high density vibration control resin H. D. polymer frame is mounted.
A 2.5 cm dome type H. D. Alloy D. U. D. tweeter is used for the high-frequency band.
This vibration damping alloy diaphragm boasts better vibration damping characteristics than conventional aluminum and titanium, and realizes a high specific elastic modulus due to the metal and a weight reduction of 60% compared with titanium. This diaphragm has a unique D. U. D structure that is directly wound around a voice coil, and realizes high-speed response and reduction of harmonic distortion.
In addition, a part of the magnetic circuit is made into a frame and mounted directly on the baffle plate to suppress resonance. The hybrid D. M. (direct mount), which has a unique unit structure, is adopted. By further developing this, the entire plate is wrapped in newly developed high-density damping resin H. D. polymer, and excellent vibration characteristics are obtained.
The network employs an I-type coil originally developed by Diatone to ensure transmission purity.
This is a laminated orient core with OFC wire wound around it. It reduces DC resistance to increase feeding power and controls core squeal by impregnation with a special resin.
In addition, an independent power feeding system and crimping wiring are employed to achieve higher purity transmission.
The enclosure uses a bookshelf type with carefully selected particleboards.
For low-order vibration modes, osae komi is achieved by the rigidity of the box itself, and for high-order modes, resolution is improved by the distributed resonance structure.
In addition, a round baffle and a round-shaped net grill are adopted to prevent the diffraction phenomenon.
Sold separately, there is a special stand made of the same high density particleboards as the enclosure.
Model Rating
| Method | 3-Way, 3-Speaker, Sealed Type, Bookshelf Type, Anti-Magnetic Type (EIAJ) |
| Units Used | For low band : 27 cm cone type For Medium Range : 10 cm Cone Type For high-pass : 2.5 cm dome type |
| Playback frequency band | 35 Hz to 32000 Hz |
| Nominal impedance | 6 Ω |
| Output sound pressure level | 91dB/W/m |
| Crossover frequency | 600 Hz, 4500 Hz |
| Max Input | 200W(EIAJ) |
| External dimensions | Width 360x Height 690x Depth 300 mm (With Net Depth 341 mm) |
| Weight | 26kg |
| Speaker Stand DK stand DK-700Z (1 set of 2, ¥ 35,000) | |
| External dimensions | Width 360x Height 188x Depth 300 mm |
| Weight | 7.5kg |