Audio Database

SL-7
Commentary

This thin speaker system was developed aiming for thinner and higher Hi-Fi.

A 20 cm cone type woofer is installed in the low range.
The corn is made of paper made from kraft pulp, which has a high Young's modulus. In addition, in order to emphasize musical quality, we are focusing on the rich reproduction of the mid-range where the main components of musical instruments are concentrated, and we have adopted an aluminum dome radiator.
In addition, it uses a special urethane rubber edge, a damper with good linearity, and ferrite magnet for the magnetic circuit.

A 20 cm Doron Cone is used to improve low-frequency playback.
The Doron Cone is a cone-type unit that does not have a magnetic circuit. The vibration of the cone reverses the phase of the low sound emitted from the back of the woofer unit to improve the low sound reproduction.
By adopting special urethane rubber edge and piano wire damper, excellent linearity is obtained even in large amplitude.

A 2.5 cm dome type tweeter is installed in the high range.
Hard special light metal is used for the diaphragm, and ferrite magnet is used for the magnetic circuit.

The network section uses a 12dB/oct LC type that utilizes transformer technology.
The SL-7 uses an E-type ferrite core.

The enclosure is made of hard special plywood and particle board with Kumiko, a traditional Japanese craft.

There were 2 kinds, SL-7 which made the best use of natural wood スピナール and SL-7W with white finish.

There was a leg type stand with aluminum finish sold separately.

Model Rating
Method 2-way, 2-speaker, passive radiator system
・ Bookshelf type
Unit For low band : 20 cm cone type
For high-pass : 2.5 cm dome type
Others : 20 cm Doron Corn
Frequency characteristic 50 Hz ~ 20 kHz (Anechoic Room)
35 Hz ~ 20 kHz (in normal listening room)
Max Input 25W
Impedance 8 Ω
Output sound pressure level 98dB/W
Crossover frequency 6.5kHz
Network 12dB/oct
External dimensions Width 415x Height 547x Depth 159 mm
Weight 8.1kg
Sold Separately Legged Speaker Stand L-1 (4-piece set, ¥ 3,900)