JBL ASB4128 User Manual

Key Features:

2 x 18” 2042H Drivers.

Large vent area for high output with

low distortion.

Parallel/Discrete Switchable input mode.

Arrays with certain AE Series full-range

model (see AE Series Array Guide).

Applications:

Performing arts facilities

Theatrical sound design

Auditoriums

Houses of worship

Live clubs

Dance-clubs/discotheques

Sport facilities

Themed entertainment venues

ASB4128 is a medium power subwoofe r system comprised of two 460 mm (18 in) low frequency drivers in a front-loaded, vented configuration. The deep, rectangular cabinet allows for extended low frequenc y bandwidth with minimum frontal profile. The enclosure is fitted with M10 threaded suspension points. Pre-engineered array bracketry is available.

ASB4128 is part of JBL’s AE Application Engineered Series, a versatile family of loudspeakers for a wide variety of applications.

ASB4128

Dual 18” Subwoofer

Specifications:

System:

Frequency Range (-10 dB): 30 Hz – 1 kHz

Frequency Response (±3 dB): 40 Hz – 1 kHz

Input Modes: Drivers Parallel / Drivers Discrete

Transducer Power Rating (AES)1: 1000 W (4000 W peak), 2 hrs

Long-Term System Power Rating2: 600 W (2400 W peak), 100 hrs

Maximum SPL3: 30 Hz – 100 Hz: 133 dB-SPL cont avg (139 dB peak)

System Sensitivity (dB-SPL, 1W @ 1m)4: 30 Hz – 100 Hz: 103 dB

Nominal Impedance: 4 ohms in parallel-drive mode

Transducers:

Low Frequency Driver: 2 x JBL 2042H 460 mm (18 in) drivers with 75 mm (3 in) voice coil

Physical:

Enclosure: Rectangular cabinet, 16 mm (5/8 in) exterior grade 11-ply

Suspension Attachment: 12 points (3 top, 3 bottom, 3 each side, 2 rear), M10 threaded hardware

Finish: Black DuraFlex™ finish. White available upon request.

Grille: Powder coated 14 gauge perforated steel, with acoustically transparent

Input Connector: NL4 Neutrik Speakon® and CE-compliant covered barrier strip

Environmental Specifications: Mil-Std 810; IP-x3 per IEC529.

Dimensions (H x W x D in 1094 x 561 x 816 mm vertical cabinet orientation): (43.1 x 22.1 x 32.2 in)

Net Weight: 64.9 kg (143 lb)

Optional Accessories: M10 x 35 mm forged shoulder eyebolts with washers

AES standard, one decade pink noise with 6 dB crest factor within device’s operational band, free air. Standard AES 2 hr rating plus

long-term 100 hr rating are specified for low-frequency transducers.

AES standard, one decade pink noise with 6 dB crest factor, in cabinet, long-term 100 hr rating.

Calculated based on power rating and sensitivity, exclusive of power compression.

Half-space (2π) loading, averaged in specified frequency band.

JBL continually engages in research related to product improvement. Changes introduced into existing products without notice are an expression of that philosophy.

100 Hz – 500 Hz: 133 dB-SPL cont avg (139 dB peak)

100 Hz – 500 Hz: 103 dB

2 x 8 ohms in discrete-drive mode

Finnish birch plywood

black foam backing.

terminals. Barrier terminals accept up to 5.2 sq mm (10 AWG) wire or max width 9 mm (.375 in) spade lugs. Speakon in parallel with barrier strip for loop-through.

Optional planar array frame kit. See AE Series Bracket Guide

u ASB4128 Dual 18” Subwoofer

Frequency response is measured on-axis at a distance referenced to 1 m @ 1 watt (2.0 Vrms) input, shown as half-space (2π, solid line) and full-space (4π, dotted line) environment.

Electrical Input Impedance (parallel mode)

Dimensions in mm (in).

For more detailed dimensional information, refer to Application Data Sheet.

For AE & AE Compact Series WRC and WRX versions please visit the JBL Pro website at http://www.jblpro.com/www/products/ installed-sound/ae-series#.V63kVfkrLIV to download Drawings.

JBL Professional 8500 Balboa Boulevard, P.O. Box 2200 Northridge, California 91329 U.S.A.

A Harman International Company

SS ASB4128 CRP 10M 8/16