76708_JBL.SRX738
4/28/09
9:01 AM
Page 1
SRX738/SRX738F
18" Three-Way
Speaker
Professional Series
Key Features:
457 mm (18 in) Differential Drive®
low-frequency driver for extended
low-frequency output
CMCD™ Cone Midrange
Compression Driver™ provides low
midrange distortion, increased
sensitivity, extended bandwidth and
improved phase coherence.
60° x 40° coverage.
Bi-amplified or full-range passive
operation.
Five suspension points may be used
with optional M10 eyebolts or
detachable track fittings.
Applications
Reinforcement of vocal and
instrumental music requiring low
frequency extension
Dance music playback
The SRX738 combines the
performance of a subwoofer-equipped
system with single-enclosure ease of
use. The 2268H 457 mm (18 in)
patented* Differential Drive® woofer
delivers impressive low-frequency
extension without a sub. The midrange is covered by JBL's CMCD™
Cone Midrange Compression Driver™
technology using a 2169H 203 mm
(8 in) driver. The CMCD design
provides very low midrange distortion,
increased sensitivity, extended
bandwidth and improved phase
coherence. The multi-band,
Progressive Transition waveguide
assembly also hosts a 75 mm (3 in)
voice coil 2431H compression driver.
Bi-amp or full-range passive
operation may be selected by means
of an internal network mode selector.
For applications requiring
suspension, a flying version, the
SRX738F is available. The F version
offers the option of selecting
economical, forged eyebolts (not
included) for fixed installation or the
convenience of detachable track
fittings (not included) for portable
applications.
The enclosure is constructed of top
quality birch plywood and coated in
JBL's rugged DuraFlex™ finish. The
attractive CNC-machined, 16-gauge
steel grille wraps around the sides of
the enclosure so there are no
protruding lips on the front of the box
to create acoustical interference. The grilles are internally lined with
acoustically transparent foam to provide additional driver protection and give a
very professional appearance.
Specifications:
System Type:
Frequency Range (-10 dB):
Frequency Response (±3 dB):
Coverage Pattern:
Crossover Modes:
Crossover Frequencies:
Power Rating
(Continuous1/ Program/Peak):
Maximum SPL:
System Sensitivity (1w @ 1m):
Mid / High Sensitivity (1w @ 1m):
LF Driver:
MF Driver:
HF Driver:
Nominal Impedance:
Active Tunings:
Enclosure:
Suspension / Mounting:
Transport:
Finish:
Grille:
Input Connectors:
Dimensions (H x W x D):
Net Weight:
Optional Accessories:
18", three-way, bass-reflex,
35 Hz - 20 kHz
44 Hz - 20 kHz
60° x 40° nominal
Bi-amp / passive, externally switchable
2 kHz / 350 Hz
Passive:
800 W / 1600W / 3200 W
Bi-amp LF:
800 W / 1600W / 3200 W
Bi-amp MF/HF: 350W / 700W / 1400W
130 dB SPL peak
95 dB SPL (passive mode)
108 dB SPL (bi-amp mode)
1 x JBL 2268H 457 mm (18 in) Differential Drive®
woofer
1 x JBL CMCD-81H Cone Midrange Compression
Driver with integral 2169H 200 mm (8 in) Differential
Drive® driver
1 x JBL 2431H 75 mm (3 in) voice coil, neodymium
compression driver
Passive:
8 ohms
Bi-amp LF: 8 ohms
Bi-amp HF: 8 ohms
dbx DriveRack, all models. Settings available at
www.jblpro.com
Trapezoidal, 15mm, 11-ply birch plywood
5 x suspension points, M10 or optional track kit
2 x steel handles
Black DuraFlex™ finish
Powder coated, black, 16 gauge perforated steel with
transparent charcoal foam backing. Removable JBL
badge and punched JBL logo.
Neutrik® Speakon® NL-4 (x2)
1022 x 534 x 508 mm
(40.25 x 21 x 20 in)
43 kg (95 lbs.)
SRX738-CVR: Pull-over padded cover
SRX-FF3: Flying hardware kit
229-00009-01: 10 mm forged eyebolts and washers
IEC standard, full bandwidth pink noise with 6 dB crest factor
Calculated based on power rating and sensitivity
1
*U.S. Patent 5,748,760; other U.S. and foreign patents
pending.
2
JBL continually engages in research related to product improvement. Some materials, production methods and design
refinements are introduced into existing products without notice as a routine expression of that philosophy. For this
reason, any current JBL product may differ in some respect from its published description, but will always equal or
exceed the original design specifications unless otherwise stated.
76708_JBL.SRX738
4/28/09
9:01 AM
Page 2
SRX738 18" Three-Way Speaker
Block Diagram
Frequency Response
+
JBL PROFESSIONAL
Northridge, CA USA
Made in USA
Serial No.
SRX738
NL4
IN / THRU
1+
1-
HPF
HIGH
FREQ
+
2+
2BPF
PASSIVE
MODE
-
MID
FREQ
IN / THRU
NL4
IN / THRU
+
1+
1-
LPF
2+
2-
-
LOW
FREQ
+
BI-AMP
FULL RANGE
±1 IN: 8 Ω
±1 LF: 8 Ω
±2 N/C
±2 HF: 8 Ω
NL4
IN / THRU
1+
1-
HPF
HIGH
FREQ
+
2+
2LPF
Remove input plate to change bi-amp / passive mode
SRX700
Equipped with Differential DriveÆ
Transducer Technology U.S. PATENT 5,748,760
BI-AMP
MODE
NL4
IN / THRU
-
MID
FREQ
+
1+
12+
2-
-
Beamwidth
LOW
FREQ
Directivity Index
Graphs represent performance with passive crossover network
Dimensions
22.5°
534 mm
(21 in)
508 mm
(20 in)
229 mm
(9.0 in)
1022 mm
(40.25 in)
523 mm
(20.6 in)
262 mm
(10.3 in)
188 mm
(7.4 in)
169 mm
(6.6 in)
JBL Professional
8500 Balboa Boulevard, P.O. Box 2200
Northridge, California 91329 U.S.A.
A Harman International Company
© Copyright 2004 JBL Professional
(SRX738F Shown)
SS SRX738
CRP 5M
08/04