Audio Database


A 2-way speaker system developed as an improved version of the 4320 and 4331.

A 38 cm cone type woofer 2231A is mounted for the low range, and a horn type unit combining an acoustic lens 2308, an exponential horn 2312 and a driver 2420 is mounted for the middle range.
A horn type tweeter 2405 is installed in the high-frequency range.

In addition to the built-in network drive, the 4333A can be used for 2-channel multi-amp drive by switching the rear switch.

The enclosure uses a bass reflex system.
You can also change the left / right rotation of the tweeter and the installation of the acoustic lens so that it can be used in either vertical or horizontal orientation.

It is equipped with iron reinforcing metal fittings and can be suspended.

There are two variations in appearance : the 4331A uses a gray finish and black grill, and the 4331 awx uses a walnut finish and blue grill.

Model Rating
Method 3-Way, 3-Speaker, Bass reflex system, Bookshelf Type
Unit For low band : 38 cm cone type (2231A)
For Middle Range : Horn Type (2308 + 2312 + 2420)
For High Pass : Horn Type (2405)
Playback frequency band 35 Hz to 20 kHz ± 3 dB
Crossover frequency 800 Hz, 8.5 kHz
Directional (Horizontal x Vertical) 60 ゜ x30 ゜ (16 khz)
Impedance 8 Ω
Output sound pressure level 93 db (New JIS)
Allowable Input (RMS) Network : 75W
800 Hz or less : 75W
800 Hz or more : 30W
Enclosure volume 156L
External dimensions Width 619x Height 778x Depth 497 mm
Weight 59kg