Audio Database

SP - α 2000
Commentary

A speaker system that uses a Silfine diaphragm and an Alnico magnet.

SILFINE is made of 70% silk combined with 30% Manila hemp, which increases rigidity, using a special technique. In terms of frequency characteristics, there are no extreme peaks, and it draws a gentle curve from low to high frequencies.

It is equipped with an 18 cm cone woofer in the low range and a 2.5 cm dome tweeter in the high range.
Each unit uses Silfine for the diaphragm and an internal magnetic alnico magnet for the magnetic circuit, and is also provided with anti-vibration processing. The internal magnetic alnico magnet is an anti-magnetic type and has a strong and uniform magnetic force and uniform magnetic force in a small volume. It suppresses the appreciation of the magnetic circuit due to the back electromotive force generated by the voice coil and the adverse effect on sound quality due to magnetic flux leakage lines.
For the unit frame, we have newly developed and adopted a thick aluminum die-cast frame with excellent vibration resistance.

Parts such as large air-core coils and film capacitors with OFC (oxygen-free copper) leads are used in the network section. In addition, the network is integrated with epoxy resin and placed inside the rear baffle to prevent internal pressure caused by unit vibration.
OFC leads are used for internal wiring.

We have carefully considered the material and structure of the cabinet, using Jewel ton plywood with moderate softness and double structure on the back of the cabinet.
In addition, the inclined rear baffle is equipped with a special shape bass reflex with multiple holes, and the interior of the cabinet is filled with a sound-absorbing material mainly composed of silk to reduce standing waves.
The exterior is finished with a Shiraki finish by covering the entire surface with cypress boards.

The speaker terminal uses a large 24-gold-plated terminal made by WBT (Germany) that is compatible with banana plugs. It is mounted on a pure copper plate that does not generate magnetic distortion and has a high vibration absorption effect.

There was a speaker stand sold separately.

Model Rating
Method 2-Way, 2-Speaker, Basref System, Bookshelf Type, Magnetic Shielding Type (EIAJ)
Unit For low band : 18 cm cone type
For high-pass : 2.5 cm dome type
Playback frequency band 45 Hz to 26 kHz
Max Input 100W
Impedance 6 Ω
Output sound pressure level 88dB/W/m
Crossover frequency 3.8kHz(18dB/oct)
External dimensions 260 mm W x 450 mm H x 331 mm D (Including RUNNET)
Weight 12.0kg
Attachment Speaker Cord (3m)
Sold separately : Speaker Stand L-1010 (1 unit, ¥ 19,000)
External dimensions Width 320x Height 430x Depth 340 mm
Weight 6.9kg