JBL ASB4128 User Manual
Key Features:
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2 x 18” 2042H Drivers.
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Large vent area for high output with
low distortion.
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Parallel/Discrete Switchable input mode.
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Arrays with certain AE Series full-range
model (see AE Series Array Guide).
Applications:
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Performing arts facilities
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Theatrical sound design
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Auditoriums
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Houses of worship
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Live clubs
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Dance-clubs/discotheques
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Sport facilities
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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
1
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.
2
AES standard, one decade pink noise with 6 dB crest factor, in cabinet, long-term 100 hr rating.
3
Calculated based on power rating and sensitivity, exclusive of power compression.
4
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
© Copyright 2016 JBL Professional
SS ASB4128
CRP 10M
8/16
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