JBL 4406 Monitor Studio, 1986-98,


Link: Owner's Manual [PDF] | audio-heritage

\ 63,000 (1 unit, released in 1986)
\ 56,000 (1 unit, around 1998)

New 44 series small speaker system developed as the next generation monitor series.

The 17 cm cone type Woofer is carried in low-pass.
A special polypropylene cone is adopted as a diaphragm, and low distortion is aimed at by laminating a high polymer composite material on a pulp base. Moreover, by using the SFG magnetic circuit for the magnetic circuit, smooth energy response and improvement of the input resistance are realized.

Dome type tweeter is carried in the high region.
Pure titanium is used for the diaphragm of this unit, and it is molded into a dome of 25 micron thickness with original technology and it is carried. In addition, by combining a diamond edge pattern and a reinforcing rib that gave a hint to Japan's origami workmanship, we have acquired superior characteristics up to 27 kHz ultra high region without sacrificing efficiency.

Bass-reflex system is adopted for enclosure.

method 2 way · 2 speaker · bass-reflex system · book shelf type
Used unit For low-pass: 17 cm cone type / For high region: dome shape
Frequency characteristic 55 Hz to 20 kHz
Impedance 8 Ω
Output sound pressure level 87 dB / W / m
Permissible input 75 W (continuous program)
Crossover frequency 3 kHz
External dimensions Width 245 × height 390 × depth 227 mm
weight 7.7 kg

удалось выяснить откуда же в боковых стенках просверлены отверстия: (на фото ниже JBL 4401)