JBL ASB7128 User Manual
Ultra Long Excursion
High Power
Professional Series
Key Features:
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2 x 2269H 18” Differential Drive
dual voice coil dual gap, neodymium
magnet transducers
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4000 watts continuous pink noise,
16000 watts peak power handling
capacity
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Ultra Long Excursion
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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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For ground-stacked or suspended
applications in stand-alone arrays or
in combination with other AE Series
products
®
Applications:
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Performing Arts Facilities
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Theatrical Sound Design
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Auditoriums
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Worship Facilities
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Live Clubs
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Dance Clubs
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Sports Facilities
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Themed Entertainment Venues
The ASB7128 is a high power,
lightweight front-loaded vented
subwoofer enclosure housing two of
JBL’s exclusive 2269H Ultra Long
Excursion 18” Differential Drive®
woofers. This woofer features neodymium
magnet, dual voice coils and dual gaps,
JBL’s exclusive Vented Gap Cooling™
and ultra robust composite cone for high
excursion and extra long life. Woofer
is capable of a peak-to-peak maximum
excursion of 89 mm (3.5”).
The enclosure is constructed of
multiply hardwood coated in JBL’s rugged
DuraFlex™ finish and is heavily braced
to maximize low-frequency performance.
The rectangular enclosure is fitted
with sixteen M10 threaded attachment
points and utilizes a 14-gauge steel
grille internally lined with acoustically
transparent foam to provide additional
driver protection and give a very
professional appearance.
The ASB7128 is part of JBL’s AE
Series, a versatile family of loudspeakers
intended for a wide variety of applications.
ASB7128
Dual 18” Subwoofer
Specifications:
System:
Frequency Range (-10 dB): 20 Hz - 1 kHz
Frequency Response (± 3 dB): 25 Hz - 1 kHz
Input Modes: Drivers Parallel / Drivers Discrete
Transducer Power Rating1: 4000 W (16000 W peak), 2 hrs.
Long-Term System Power Rating2: 2400 W (9600 W peak), 100 hrs
Maximum SPL (1m)3: 25 Hz - 200 Hz: 135 dB-SPL cont avg. (141 dB peak)
System Sensitivity4: 25 Hz - 200 Hz: 99 dB-SPL, 1W (2.0V) @ 1m
Nominal Impedance: 4 ohms in parallel-drive mode
Transducers:
Low Frequency Driver: 2 x 2269H, 460 mm (18 in) dia., 100 mm (4 in) Dual Coil Dual Gap
Physical:
Enclosure: Rectangular cabinet, 16 mm (5/8 in) exterior grade 11-ply
Suspension Attachment: 16 points (4 top, 4 bottom, 4 each side) M10 threaded hardware
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 1092 x 560 x 815 mm
vertical cabinet orientation): (43.0 x 22.0 x 32.1 in)
Net Weight: 71.9 kg (158.5 lb)
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.
Optional Accessories: M10 x 35 mm forged shoulder eyebolts with washers.
2 x 8 ohms in discrete-drive mode
neodymium Differential Drive®, VGC™ drivers
birch plywood
Finish: Black DuraFlex™ finish. White available upon request.
Grille: Powder coated 14 gauge perforated steel, with acoustically transparent
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.
u ASB7128 Ultra Long Excursion High Power Dual 18” Subwoofer
110
Frequency (Hz)
Impedance (Ohms)
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.
100
90
SPL (dB)
80
70
20 100 1000 10000 20000
Electrical Input Impedance (parallel mode)
100
10
Frequency (Hz)
1
20 100 1000 10000 20000
426.0
(16.8)
1092.2
(43.0)
477.8
(18.8)
C
L
TOP
559.8
(22.0)
FRONT
R762.5
(R30.0)
95.0
(3.7)
675.5
(26.6)
C
L
Dimensions in mm (in).
814.9
(32.1)
426.0
(16.8)
SIDES
C
L
REAR
BOTTOM
JBL Professional
8500 Balboa Boulevard, P.O. Box 2200
Northridge,
Harman International
© Copyright 2016 JBL Professional
California 91329 U.S.A.
SSASB7128-50
CRP
8/16
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