Audio Database

Image of S-180A
Commentary

This speaker system uses a boron alloy diaphragm and pursues sound image realism.

A 32 cm cone type woofer is installed in the low range.
This unit features a magnetic circuit with an outer diameter of 165 mm and a strong aluminum die-cast frame secured to the baffle surface with eight screws to reduce unwanted vibration.

The mid-range features a 12 cm balanced mid-range drive.
By using a B-alloy (boron alloy) diaphragm as the diaphragm material, sound quality with a core with excellent transient characteristics is obtained. In addition, by using B-alloy for both the cone part and the center dome part as a balance drive, sound connection is improved by devising the apex angle of each part, and a wide band is realized.
A magnetic circuit with an outer diameter of 110 mm realizes high efficiency and high transient characteristics.

A 2.5 cm dome type tweeter using a B-alloy diaphragm is mounted in the high frequency range.
This unit is a direct radiator type driven by a lightweight voice coil with a diameter of 25 mm and a strong magnetic circuit, and realizes a playback bandwidth of up to 30000 Hz.

The network section is designed with low loss and high input resistance in order to increase the efficiency of the system. By suppressing crosstalk, clear and clear sound quality is obtained.

The enclosure has an internal volume of 66 liters and adopts a standing wave distributed proportion, and the sound image localization is made clear by designing the unit arrangement of the baffle surface to be symmetrical.

Model Rating
Method 3-Way, 3-Speaker, Bass reflex system, Bookshelf Type
Units Used For low band : 32 cm cone type
For Middle Range : 12 cm Balanced Drive Type
For high-pass : 2.5 cm dome type
Impedance 6.3 Ω
Playback frequency band 30 Hz to 30000 Hz
Output sound pressure level 95dB/W/m
Instantaneous maximum output sound pressure level 119dB/m
Max Input 120W
Instantaneous maximum input 240W
Crossover frequency 1000 Hz, 5000 Hz
External dimensions Width 385x Height 650x Depth 377 mm
Weight 25kg