Audio Database

S-1800DV image
Commentary

A speaker system that inherits the technology of the S-180D and is equipped with a magnetic shielding design.

The S-1800DV uses a dual magnetic shield system that combines a large magnet and a cap to reduce leakage flux in the woofer and mid-range magnetic circuits, while the tweeter is covered with a magnetic shield cap to reduce leakage flux.

A 32 cm cone type woofer using a unique EBD (Electronic Bass Drive) system is installed in the low range.
The EBD ebd system, two voice coils are used to electrically expand the low-frequency range, making it possible to perform powerful low-frequency playback that breaks the conventional low-frequency limit. In addition, the Linear Drive Magnetic Circuit (LDMC) system is used for the magnetic circuit. By making the magnetic flux density symmetrical in front and pole piece and installing a sub pole, the non-linearity of the driving force is eliminated. This reduces the amplitude distortion factor to 1/2 to 1/3 of the conventional one.
Carbon graphite cone, which is light and strong and has a large internal loss, is used for the diaphragm. This is supported by DRS (Dynamic Response Suspension), which has excellent input follow-up capability.

The mid-range has a 12 cm cone type mid-range.
This unit uses an integrally molded one piece B-alloy diaphragm, and a special adhesive is used to bond the voice coil and diaphragm to minimize transmission loss.

A beryllium ribbon type tweeter with a unique direct drive structure is installed in the high frequency range.
In the ribbon type, high-fidelity reproduction is possible because the lightweight and high-rigidity diaphragm is the driving part, and directivity and energy balance are improved by the new shape horn.

The network section employs a fully orthogonal arrangement of choke coils with separate signal paths, and uses capacitors with low ESR (equivalent series resistance) to achieve low crosstalk and low loss.

The enclosure is designed with a bass reflex.
The S-1800DV uses a round baffle with an R on the left and right corners of the baffle to improve acoustic characteristics.

You can adjust the tone balance with the visual and audio selector and level controls on the tweeter.

There are 2 color variations of the exterior, black and brown.

Model Rating
Method 3-way, 3-speaker, bass reflex system, bookshelf type, magnetic protection design
Unit For low band : 32 cm cone type
For Medium Range : 12 cm cone type
For High Frequency : Ribbon Type
Impedance 6 Ω
Playback frequency band 30 Hz to 50 kHz
Output sound pressure level 93dB/W/m
Rated input 60W
Instantaneous maximum input 200W
Crossover frequency 550 Hz, 4 kHz
External dimensions Width 390x Height 680x Depth 353 mm
Weight 29.5kg