JBL 3677 - User Manual

3677
Application:
Small room, cinema sound systems
Key Features:
䉴 Frequency Range: 40 Hz to 20 kHz
(–10 dB)
䉴 Sensitivity: 99 dB
䉴 Power Capacity: 250 watts
䉴 Low frequency transducer: One
380 mm (15 in.) low frequency
driver
䉴 High frequency transducer: 25 mm
(1 in.) horn throat diameter,
44 mm (1.75 in.) pure titanium
diaphragm compression driver
䉴 90⬚ X 40⬚ Flat-Front Bi-Radial
®
horn
䉴 Newly designed passive network
with driver protection circuit
䉴 All in one enclosure for simple
installation
䉴 Shallow profile cabinet minimizes
behind-screen space requirements
The JBL 3677 cinema loudspeaker
system provides natural sound quali-
ty for music and dialog in small cine-
ma applications. The convenient all-
in-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 com-
pression driver and 2373 Flat-Front
Bi-Radial
®
horn. The titanium
diaphragm of the 2416-1 ensures nat-
ural 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 compo-
nents 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 capacity
1
(system): 250 W continuous pink noise
Sensitivity: 99 dB (1W, 1m)
Nominal impedance: 8 ohms
Crossover frequency: 1.2 kHz
Nominal coverage: 90⬚ horizontal, 40⬚ vertical
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

Summary

JBL 3677 Cinema Loudspeaker System Application

Application Details

Designed for use in small room cinema sound systems, offering convenient all-in-one enclosure for simple installation.

JBL 3677 Key Features Overview

Frequency Range and Sensitivity

Covers 40 Hz to 20 kHz (-10 dB) with a sensitivity of 99 dB, ensuring broad audio reproduction.

Transducer Specifications

Features a 15-inch low frequency driver and a 1-inch titanium diaphragm compression driver with a Bi-Radial horn.

Design and Installation Features

Includes a passive network with protection circuit and a shallow profile cabinet for minimal behind-screen space.

JBL 3677 System Specifications

Performance Specifications

Details frequency response (45 Hz-12 kHz ±3 dB), 250W power capacity, 99 dB sensitivity, and 1.2 kHz crossover.

Coverage and Acoustic Output

Provides 90° horizontal x 40° vertical coverage with 7 acoustic watts maximum output.

Physical Dimensions and Weight

Measures 765 x 651 x 292 mm (30.125 x 25.625 x 11.5 inches) with a net weight of 39 kg (85 lbs).

JBL 3677 Specifications

General

Nominal Impedance	8 ohms
Crossover Frequency	1.2 kHz
Low Frequency Transducer	2226H
High Frequency Transducer	2426H
Woofer	15 in
Tweeter	1 in
Type	2-way