Audio Database

Image of D-700f
Commentary

A speaker system developed as a mid-floor 2-way based on the theme of how to casually fit the infinitely transparent sound to the space.

A woofer unit with 22 cm pure cross carbon cone is used for the low range.
In this unit, the diaphragm is 15% lighter to improve playback in the middle and low frequencies, and the woofer neck is shaped into an ellipse to disperse resonance and reduce squeal in the divided vibration band by the diaphragm with increased rigidity.

A 2.5 cm dome type tweeter is used for the high range.
The diaphragm uses a plasma-carbonite titanium dome with a structure that eliminates resonance by cutting the outer peripheral part with a laser to remove the ultra-high frequency peak component. In addition, the reproducibility of fine sound field information is improved by damping the vibration of the tweeter frame with damping material.

In order to suppress interference between elements and signal paths, a separate type network is adopted and the arrangement is also taken into consideration.

The enclosure adopts a slant cabinet system, and the center of gravity of the system can be set near the center of the cabinet, which stabilizes the sound image and improves the directional characteristics in the listening position.
In addition, an acoustic inner diffuser has been introduced to control the sound pressure inside the cabinet. A woofer unit is placed in the center of the cabinet to cancel the half-wavelength standing wave by nodal drive, and the second and third standing waves are dispersed by an oblique reinforcing bar acoustic diffuser.
As a result, internal sound pressure, which was conventionally absorbed only by filling with sound absorbing material, is minimized in order to blunt sound reaction, and is controlled by development of cabinet structure, material of sound absorbing material, optimum filling position, etc.

It is equipped with a 3 ° elevation angle setting stand as standard equipment. It is designed for listening while sitting on a sofa or chair. The center of gravity of the system is located in the center to improve the stability of the sound image.
In addition, the angle can be adjusted in the range of 0 ° ~ 3 ° by adjusting the rear screw.

Model Rating
Method 2-Way, 2-Speaker, Basref System, Floor Type, Anti-Magnetic Type
Units Used For low band : 22 cm cone type
For high-pass : 2.5 cm dome type
Playback frequency band 35 Hz to 45 kHz
Max Input 180W(EIAJ)
Impedance 6 Ω
Output sound pressure 90dB/W/m
Crossover frequency 2.5kHz
External dimensions Body : Width 250x Height 730x Depth 314 mm
Stand Included : Width 270x Height 792x Depth 358 mm
Weight 20kg