DIATONE DS-15B

Commentary

A high-efficiency two way speaker system that employs an acoustic air suspension system.

A 20 cm cone type woofer is installed in the low range.
This unit is designed to have performance suitable for an acoustic air suspension system. By using a large magnet of 110 mm in diameter, strong magnetic energy is secured, the distortion of low and heavy bass is suppressed, and efficiency is improved. In addition, attention is paid to the weight distribution of the vibration system, airtightness of cone paper, compliance of the support system, linearity at large amplitude, etc.
In addition, a special synthetic rubber damping ring is attached to the voice coil to form a kind of mechanical filter. By improving the high-frequency characteristics, the connection near the crossover frequency is smoothed.

A 4 cm semi-dome type tweeter is installed in the high range.
By making the diameter as small as 4 cm, the effective vibration radius of the cone is reduced and the pointing characteristic is improved. In addition, the center cap is made of titanium with excellent rigidity, which is molded in a conical shape. By suppressing the generation of divided vibration, the pointing characteristic is improved and the piston motion range is expanded.

High input resistance is realized by adopting heat-resistant voice coil for voice coil.

A metalized polyester film capacitor with low distortion and excellent high-frequency characteristics is used for the capacitor for the network, and a core-containing coil with low DC resistance and low distortion is used for the coil, realizing low distortion reproduction in the entire reproduction band.

The enclosure uses a symmetrical design to improve sound image localization.

Model Rating

Method	2-way, 2-speaker acoustic air suspension system Bookshelf type
Units Used	For low band : 20 cm cone type For high pass : 4 cm cone type
Nominal impedance	6 Ω
Playback frequency band	45 Hz to 20 kHz
Crossover frequency	2kHz
Output sound pressure level	90dB/W/m
Max Input	60W
External dimensions	Width 240x Height 415x Depth 241 mm
Weight	9kg