ACOUSTIC SYSTEMS

JBL 3678

Introduction
Features
Specifications

Introduction

JBL 3678 Screen Channel System The 3678 screen channel system can be used in either the passive mode or in a bi-amplified system. THX-approved for THX system applications.

Features

Specifications

Introduction
Features
Specifications

Features

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.
Flat power response 100° x 100° Bi-Radial® horn.
Operable in bi-amp or passive mode.
Includes adjustable bracket for horn aiming.
Shallow profile cabinet minimizes behind-screen space requirements.
THX® - approved for THX system installations (biamplified only).

Introduction

Specifications

Introduction
Features
Specifications

SPECIFICATIONS

Frequency Range	30 Hz to 20 kHz (-10 dB)
Frequency Response	45 Hz to 12 kHz (+/- 3 dB)
Power Capacity (Continuous Pink Noise)	300 W Passive HF: 50 W Bi-Amp LF:600 W Bi-Amp
Sensitivity	98 dB (1W, 1m)
Nominal Impedance	8 Ohms
Crossover Frequency	1 kHz
Nominal Coverage	90° Horizontal, 90° Vertical

Half-Space Reference Efficiency	3.3%
Maximum Acoustic Power Output	8 Acoustic W (Sine Wave Input)
System Polarity	Positive Voltage to RED produces forward cone motion
Input Connectors	Barrier Strip Screw Terminals
Dimensions (H x W x D)	1019 (w/horn) x 651 x 292 mm (40.125 (w/horn) x 25.625 x 11.5 in)
Net Weight	41 kg (90 lb)