Jbl STX818S User Manual [ru]
Professional Series
Key Features:
䉴
Premium passive loudspeaker
system
䉴
Very high power handling
䉴
18 inch, 2242H - Super Vented Gap
Cooled™ woofer for extended lowfrequency output and extremely low
distortion
䉴
Large port area for reduced
distortion
䉴
20 mm threaded pole socket for
solid, secure satellite speaker
mounting
Applications
䉴
Live performance venues
䉴
Mobile and fixed DJ systems
䉴
Sound system rental
STX818S
Shown with optional
SS4-BK pole and
STX815M
18" High Power
Subwoofer
The STX818S is a compact, high
power subwoofer system containing a
2242H patented Super Vented Gap
Cooled™ 18" woofer in a front-loaded,
vented enclosure. The enclosure is
designed to present a minimum frontal
area. The system offers complete input
connection flexibility for compatibility
with a variety of cabling schemes. A
recessed, external switch allows
selection of either contacts +1/-1 or
+2/-2.
The STX818S is equipped with a
top-mounted, threaded, 20 mm socket
that can receive the optional SS4-BK
pole. This adjustable height pole can
be used to mount speakers equipped
with standard 35 mm pole sockets and
weighing up to 50 kg (100 lb). The
threaded socket minimizes buzzing
and rattling and assures that the pole
will be secure and straight.
The enclosure is constructed of top
quality birch/poplar laminate plywood,
coated in JBL’s rugged DuraFlex™
finish and is heavily braced to
maximize low-frequency performance.
The attractive CNC-machined, 14gauge steel grille is internally lined
with acoustically transparent cloth to
provide additional driver protection
and give a very professional
appearance. The rear of the enclosure
is fitted with T-nuts which may be
used to attach the optional WK-4
caster kit.
Specifications:
Frequency Range (-10 dB): 35 Hz – 250 Hz
Frequency Response (±3 dB): 40 Hz – 120 Hz
Recommended Crossover Frequencies: 30 Hz, 24 dB / octave HPF
1
40 Hz to 120 Hz pink noise with 6 dB crest factor, 2 hours duration.
2
Calculated 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.
Input Connection Modes: Switchable, +1/-1 or +2/-2
(Continuous1/ Program / Peak): 1000 W / 2000 W / 4000 W
Sensitivity (1w @ 1m): 96 dB SPL
Dimensions (H x W x D): 558 mm x 568 mm x 718 mm
System Type: 18" bass-reflex subwoofer
80 Hz, 24 dB / octave LPF
Power Rating
Maximum SPL2: 132 dB SPL peak
LF Driver: 1 x JBL 2242H 457 mm (18 in) Super Vented Gap
Cooled™ woofer
Nominal Impedance: 8 ohms
Active Tunings: Designed for Crown amplifiers and dbx DriveRack.
Settings available at www.jblpro.com
Mounting: Top mounted M20 threaded socket for optional SS4-
BK pole
Enclosure: Rectangular, 18 mm, 13-ply birch/poplar laminate
plywood
Transport: 4 side handles, bottom mounting points for optional
casters
Finish: Black DuraFlex finish
Grille: Powder coated, black, 14-gauge perforated steel with
acoustical transparent cloth backing. Removable JBL
badge and punched JBL logo.
Input Connectors: Neutrik®Speakon®NL-4 (x2)
(22.0 in x 22.4 in x 28.3 in)
Net Weight: 45 kg (100 lb)
Optional Accessories: SS4-BK: Adjustable, heavy-duty pole, M20 thread to
35 mm
WK-4: Caster kit
For covers go to www.jblbags.com
䉴 STX818S 18" High Power Subwoofer
20 100 1000 10000 20000
Frequency (Hz)
70
80
90
100
110
SPL (dB)
2 half space
4 free field
NL4 ±1
NL4 ±2
+
-
LOW
FREQ
1+1+
1+1+
1-1-
1-1-
2-2-
2-2-
2+2+
2+2+
DISCRETE
NOT USED ON SRX718S
PARALLEL
CONNECTOR
NL4
IN / THRU
INTERNAL
CONNECTORS
NL4
IN / THRU
Block Diagram Frequency Response
Serial No.
STX818S
IN / THRU
NL4 ±1
INPUT: 8Ω
NL4 ±2
STX800
Equipped with Differential Drive® Transducer
Technology U.S. PATENTS: 5,042,072
Dimensions
719.2
28.3
JBL PROFESSIONAL
Northridge, CA USA
Designed in the USA
Made in Mexico
N108
100°
393.7
15.5
436.6
17.2
569.8
22.4
561.9
22.1
557.6
22.0
384.2
15.1
276.5
10.9
203.2
8.0
JBL Professional
8500 Balboa Boulevard, P.O. Box 2200
Northridge, California 91329 U.S.A.
© Copyright 2012 JBL Professional
www.jblpro.com
126.5
5.0
284.2
11.2
408.6
16.1
SS STX818S
CRP
06/12 A
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