DIATONE DS-27B

Commentary

This bookshelf type speaker system pursues 2-way sound quality.

A 25 cm cone type woofer is installed in the low range.
The cone paper uses a double-layer cone. Using our unique technology, we have increased the strength without losing weight and expanded the piston motion band by creating a high-density molded structure with thickness only at the peripheral part. In addition, the center cap is made of a special aluminum alloy that is light and highly rigid to obtain a high-density mid-range.
In addition, a damping ring made of special synthetic rubber is attached to the voice coil to function as a mechanical filter to improve the characteristics near the crossover frequency.
A die-cast frame with sufficient thickness and structure is used for the frame, and resolution is improved by eliminating natural vibration.

A 5 cm cone type tweeter is installed in the high range.
The center cap is made of titanium, which is lightweight and hard, and provides more flat characteristics by suppressing split vibration in the high-frequency range. In addition, by increasing the volume of the chamber behind the diaphragm and setting the resonance frequency to 600 Hz, the directivity near the crossover frequency is improved. In addition, by installing a subframe with an orifice structure, the resonance is controlled and a bright high-frequency range is obtained.
Solid die-cast frame is used for the frame.

The voice coil of each unit is heat-resistant, so that it can withstand heat generated by Dainyu Chikara and improve input resistance.

In order to reduce distortion of network circuits, the characteristics of each element and the entire structure are examined.
Capacitors and coils are designed with low distortion by minimizing AC and DC resistance. In addition, the use of lug plate terminals reduces DC resistance between elements due to wiring, eliminating distortion and coloring.

The high-frequency range is equipped with a 2-position switching type level control.

The front baffle has a symmetrical layout with a tweeter inside, which improves the orientation by improving the directivity of the high sound range.

In order to increase the strength of the enclosure, the joint structure employs a strong sealing hozo joint, in which plates are connected so as to engage each other, and reinforcement is placed in the appropriate place to disperse the resonance mode and prevent the box rumbling phenomenon.

Model Rating

Method	2-Way, 2-Speaker, Bass Reflex System, Bookshelf Type
Units Used	For low band : 25 cm cone type For high-pass : 5 cm cone type
Playback frequency band	45 Hz to 20 kHz
Output sound pressure level	90dB/W
Max Input	60W
Nominal impedance	6 Ω
Crossover frequency	1.5kHz
Level control	High Frequency : 2 positions (1.5 kHz to 20 kHz)
External dimensions	Width 320x Height 570x Depth 293 mm
Weight	13.0kg