SRX728S Dual 18″ High Power

SRX728S Dual 18″ High Power

                                                               SRX728S Dual 18″ High Power

Professional Series

Key Features:
Dual 18 inch, 2268H Differential
Drive®  woofers for extended low-
frequency output
Large vent area for reduced

Live performance venues
Mobile and fixed DJ systems
Sound system rental

The SRX728S is a high power
subwoofer system containing two
2268H neodymium magnet, patented*
Differential Drive , 18″ woofers in a
front-loaded, vented enclosure. The
enclosure is designed to present a
minimum frontal area. The system
offers complete input connection                         Specifications:
flexibility for compatibility with a
variety of cabling schemes. A recessed,                               Frequency Range (-10 dB):      27 Hz – 220 Hz
external switch allows selection of
Frequency Response (±3 dB):      33 Hz – 220 Hz
either contacts +1/-1 or +2/-2. By                                      Input Connection Modes:      Switchable, +1/-1 or +2/-2
relocating an internal connector, it is                                                              Internally selectable, Parallel or Discrete
also possible to drive each woofer                        Recommended Crossover Frequencies:         80 Hz, 24 dB / octave HPF
discretely from a separate amplifier                                                                  80 Hz, 24 dB / octave LPF
channel.                                                                             Power Rating
(Continuous  / Program / Peak):     Parallel: 1600 W / 3200 W / 6400 W
The enclosure is constructed of top                                                            2
Maximum SPL :     136 dB SPL peak
quality birch plywood and coated in                                        Sensitivity (1w @ 1m):    98 dB SPL
JBL’s rugged DuraFlex™ finish. Each                                                       LF Driver:  2 x JBL 2268H 457 mm (18 in) Differential Drive
woofer is housed in an isolated                                                                      woofer with neodymium-magnet and dual voice-coils
chamber and the enclosure is heavily                                         Nominal Impedance:      Parallel:  4 ohms
braced to maximize low-frequency                                                                     Discrete: 8 ohms x 2
performance. The attractive CNC-                                                   Active Tunings:   dbx DriveRack, all models. Settings available at
machined, 16-gauge steel grille is                                                      Enclosure:   Rectangular, 18 mm, 13-ply birch plywood
internally lined with acoustically                                                          Finish:  Black DuraFlex finish
transparent foam to provide additional                                                       Grille: Powder coated, black, 16-gauge perforated steel with
driver protection and give a very                                                                    acoustical transparent charcoal foam backing.
professional appearance.                                                                             Removable JBL badge and punched JBL logo.
Input Connectors:     Neutrik® Speakon®  NL-4 (x2)
*U.S. Patent 5,748,760; other U.S. and foreign patents                  Dimensions (H x W x D):      602 mm x 1067 mm x 838 mm
pending.                                                                                             (23.7 in x 42 in x 33 in)
Net Weight:   76 kg (166.5 lb)
Optional Accessories:    SRX728S-CVR: Pull-over padded cover

140 Hz to 120 kHz pink noise with 6 dB crest factor.
2Calculated based on power rating and sensitivity.

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.