Transcript
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 *U.S. Patent 5,748,760; other U.S. and foreign patents pending.
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) 1092 mm x 541 mm x 648 mm (43 in x 21.3 in x 25.5 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 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.
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+ 1-
LOW FREQ
2+ 2-
-
Beamwidth
Directivity Index
Graphs represent performance with passive crossover network
Dimensions 22.5° 541 mm (21.3 in)
648 mm (25.5 in)
229 mm (9.0 in) 1092 mm (43.0 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
