Jbl STX818S User Manual [ru]

Professional Series
Key Features:
Premium passive loudspeaker system
Very high power handling
Large port area for reduced distortion
20 mm threaded pole socket for solid, secure satellite speaker mounting
Applications
Live performance venues
Mobile and fixed DJ systems
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
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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