Audio Database

4312SX
Commentary

This speaker system dramatically expands the power range in the mid - and high-frequency range and is compatible with DVD Audio and SACD.

Cm white cone type woofer, 2213H is used for the low range.
It uses a 75 mm diameter copper ribbon edgewise wound voice coil, SFG (symmetrical field geometry) magnetic circuit and aluminum die cast frame.
In addition, Aqua Plus coated pulp cone is used for the diaphragm, and accordion pleated edge is used for the edge.

The mid-range uses 12.5 cm pure titanium, inverted dome, mid-range 904Ti-1.
In order to expand the piston motion area, the diaphragm is formed into an inverted dome shape, and a 37 mm voice coil with a balanced drive design is adopted to suppress the generation of split vibration.
The magnetic circuit uses an inner magnet type of neodymium magnet, and together with a bucket structure of aluminum die-cast frame and a bent center pole piece to release back pressure, transient characteristics and resolution are improved.

TW025Ti which is a 25 mm ripless pure titanium dome tweeter is mounted in the high range.
It uses a lightweight aluminum voice coil with copper coating on a pure titanium diaphragm molded by Ri-press.
In addition, we have adopted a Ferrofluid dump, which releases heat from the diaphragm and at the same time increases the damping effect.

As a bookshelf type, it is equipped with a continuously variable attenuator volume that is independent of the middle and high frequencies so that it can be used in various ways.

The enclosure uses a twin port type with a bass reflex structure.
In addition, the use of 25 mm thick MDF material for the front baffle increases the baffle strength, and the flash-mounting of mid-range units controls the phase and diffraction between units.
The exterior has a walnut finish.

Model Rating
Method 3-Way, 3-Speaker, Bass reflex system, Bookshelf Type
Units, etc. For Low Band : 30 cm Cone Type (2213H)
For Middle Area : 12.5 cm Reverse Dome Type (904Ti-1)
For High Range : 2.5 cm Dome Type (TW025Ti)
Frequency characteristic 40 Hz to 50000 Hz ± 0 dB
Output sound pressure level 93dB(2.83V/1m)
Impedance 6 Ω
Allowable input 150W(RMS)
Crossover frequency 900 Hz, 3800 Hz
External dimensions Width 362x Height 597x Depth 299 mm
Weight 20.0kg
Sold Separately Speaker Stand JS-50 (1 unit, ¥ 25,000)