Audio Database
Interface:A
Commentary

A speaker system with an equalizer developed in pursuit of a compact speaker with superior performance.

Interface : A comes with an electronic equalizer.
This equalizer has a 3 dB at 50 Hz and a 6 dB at 35 Hz. Frequencies below this are sharply cut, and the sound output is nearly flat to 32 Hz. 32 Hz is three octaves below middle C, corresponding to low C in a 16-foot organ stop. The lowest sound of the contrabass is 43 Hz, making it possible to play the low sound necessary for music playback in a small system.
The EQ also allows you to change the high-frequency level. Position 1 is the most flattest of the total acoustic power, reducing the response by about 3 dB at 10 kHz. Position 2 further reduces the total acoustic power by 3 dB at 10 kHz. Position 2 is the general normal position. Position 3 further reduces the high-frequency range and provides soft sound.

In the lower range, a 20 cm cone woofer and a 25 cm cone low frequency radiator (passive radiator) are mounted.
The low frequency radiator is designed to weigh exactly equal to the weight of air tuned to 32 Hz. The radiator extends the low frequency by one third octave, increases efficiency by 2 dB and reduces the volume of the enclosure by half. The length of the low frequency radiator needs to be more than 6m in order to realize the function of the low frequency radiator by the bass reflex duct.

The high band is equipped with 5 cm tweeters using meta Le Dome on the front and back, and it is designed to keep the energy of the super high band sufficiently.
The tweeter unit has felt and foam plastic on the front and is designed to act as an diffuser at frequencies above 5 kHz.
The rear tweeter is designed to operate at 7 kHz or higher.

Tweeter protector TS-1 (sold separately) can be connected.
To connect TS-1, remove the jumper wire of the COMMON pin.

Model Rating
Method 2-way, 3-speaker, passive radiator system
・ Bookshelf type
Unit For low band : 20 cm cone type
High pass : 5cmx2
Other : 25 cm cone radiator
Frequency characteristic 30 Hz to 20 kHz
Impedance 8 Ω
Maximum allowable input 60W
Crossover frequency 1.5 kHz, 7 kHz
External dimensions Width 356x Height 559x Depth 197 mm
Weight 12.5kg
Attachment Electronic equalizer
Sold Separately TweetProtector TS-1