ACOUSTIC SYSTEMS

JBL 3631

Introduction
Features
Specifications

Introduction

JBL 3631 Three-Way Bi-Amplified Screen Array Cinema Loudspeaker System.

For critical film sound reproduction in small to medium cinemas and studio production and postproduction environments.

Today’s Cinema patron demands perfect coverage in every seat of the auditorium, wide dynamic range and extended bandwidth, as well as inaudible levels of distortion. Digital soundtracks have the potential to push the traditional two-way screen channel speaker system beyond intended performance limits. This dictates the need for a new standard of loudspeaker performance for today’s premier cinemas.

The 3631 ScreenArray features true three-way system design enhanced by advanced engineering. JBL Professional’s best technical innovations are integrated in a system design that provides superior coverage, maximum power handling, and uniform acoustic power output, along with extremely low distortion.

The ScreenArray design provides ideal power response and directivity control with seamless transitions between acoustic sections. The 3631 is available for bi-amplified or for triamplified operation.

Features

Specifications

Introduction
Features
Specifications

Features

Three-way ScreenArray design for maximum output, optimal coverage, and minimum distortion
One 380 mm (15") Vented Gap Cooled (VGC™) LF Transducer
Available for Bi-amplified operation (Model 3631) or Tri-amplified operation (Model 3631-T)
Approved for THX certified applications (3631-T)
M/HF ships fully assembled
Second Generation Optimized Aperture Waveguide technology for ultra-low distortion, and extremely uniform frequency response
SSC Screen Spreading Compensation
Focused Coverage Technology
Flat-front waveguide design for easy baffle wall installation
Shallow depth for minimum behind screen requirements
Low profile design with 600W LF

Introduction

Specifications

Introduction
Features
Specifications

SPECIFICATIONS

Frequency Range	30 Hz - 20 kHz
Frequency Response (±3 dB)	40 Hz - 16 kHz
System Sensitivity	104 dB, 2.83V @ 1m (3.3 ft)
Rated Maxium SPL	126 dB @ 1m (3.3 ft), 132 dB peak
System Input Power Rating	LF: 600 watts, M/HF: 150 watts [HF: 50 watts]
Hor. Coverage Angle (-6 dB)	90°

Vert. Coverage Angle (-6 dB)	20° up, 30° down
Directivity Factor (Q)	10.0
Directivity Index (DI)	10 dB
Crossover Frequencies	350 Hz [1.2 kHz]
Dimensions (HxWxD)	1600 mm x 762 mm x 450 mm (63 in x 30 in x 17.75 in)
Net Weight	68.6 kg (151 lbs)