3COM 3677 User Manual

3677
Application:
Small room, cinema sound systems
Key Features:
Frequency Range: 40 Hz to 20 kHz (–10 dB)
Sensitivity: 99 dB
Low frequency transducer: One 380 mm (15 in.) low frequency driver
High frequency transducer: 25 mm (1 in.) horn throat diameter, 44 mm (1.75 in.) pure titanium diaphragm compression driver
90X 40Flat-Front Bi-Radial
®
horn
Newly designed passive network with driver protection circuit
All in one enclosure for simple installation
Shallow profile cabinet minimizes behind-screen space requirements
The JBL 3677 cinema loudspeaker system provides natural sound quali­ty for music and dialog in small cine­ma applications. The convenient all­in-one enclosure requires no field assembly, simplifies set-up, and reduces labor costs. Enclosure design is extremely shallow in depth (292 mm; 11.5 inches), to minimize the space required behind the screen.
The high-frequency section consists of the JBL 2416-1 pure titanium com­pression driver and 2373 Flat-Front Bi-Radial®horn. The titanium diaphragm of the 2416-1 ensures nat­ural sound and reliability, mandatory in today’s motion picture theatres. The 2373 horn provides smooth, even coverage throughout the auditorium.
The low frequency driver is the JBL 2035H, which provides an exceptional match for system power handling and frequency response in the crossover region.
The newly-designed passive crossover network is optimized to provide a seamless transition between driver components, for clear, articulate dialog, and high fidelity music reproduction. A protection circuit ensures that all compo­nents operate within their optimal power handling range, to ensure many years of high reliability performance.
System Specifications:
Frequency range (–10 dB): 40 Hz to 20 kHz
Frequency response (± 3 dB): 45 Hz to 12 kHz
Power capacity1(system): 250 W continuous pink noise
Sensitivity: 99 dB (1W, 1m)
Nominal impedance: 8 ohms
Crossover frequency: 1.2 kHz
Nominal coverage: 90horizontal, 40vertical
Half-space reference efficiency: 3.2%
Maximum acoustic power output
(sine wave input) 7 acoustic watts
System Polarity: Positive voltage to RED produces forward cone motion
Input connectors: Barrier strip, screw terminals
Net system weight: 39 kg (85 lbs)
Shipping weight: 42 kg (93 lbs)
Dimensions (H x W x D): 765 x 651 x 292 mm
30.125 x 25.625 x 11.5 inches
1
Rating based on test signal of continuous pink noise, per IEC spectrum for two hours duration.
JBL continually engages in research related to product improvement. New materials, production methods, and design refinements are introduced into existing products without notice as a routine expression of that philosophy. For this reason, any current JBL product may differ in some respect from its published description, but will always equal or exceed the original design specifications unless otherwise stated.
Professional Series
Cinema Loudspeaker System
PRELIMINARY
3677 Cinema Loudspeaker System
JBL Professional 8500 Balboa Boulevard, P.O. Box 2200 Northridge, California 91329 U.S.A.
A Harman International Company
SS3677 CRP 10M 3/96
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