JBL STX818S Passive 18" Bass Reflex Subwoofer

BH #JBSTX818S • MFR #STX818S
JBL
JBL STX818S Passive 18" Bass Reflex Subwoofer
Key Features
  • Handles 1,000W of Continuous Power
  • 2,000W Program / 4,000W Peak Handling
  • 8Ω Nominal Impedance
  • Provides up to 132dB SPL
The STX818S Passive 18" Bass Reflex Subwoofer by JBL is a compact, high-power low frequency system capable of handling 1,000W of continuous power. It's rated at 2,000W of program power and 4,000W of peak handling. The 18" Super Vented Gap Cooled woofer is front-loaded into the vented enclosure. The system offers 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.
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JBL STX818S Passive 18" Bass Reflex Subwoofer

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JBL STX818S Overview

The STX818S Passive 18" Bass Reflex Subwoofer by JBL is a compact, high-power low frequency system capable of handling 1,000W of continuous power. It's rated at 2,000W of program power and 4,000W of peak handling. The 18" Super Vented Gap Cooled woofer is front-loaded into the vented enclosure. The system offers 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 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. It is also equipped with a threaded, pole socket to mount speakers weighing up to 100 pounds. The threaded socket minimizes buzzing and rattling and assures that the pole will be secure and straight. The CNC-machined, 14-gauge steel grille is internally lined with acoustically transparent cloth to provide additional driver protection and give a professional appearance. The rear of the enclosure is fitted with T-nuts which may be used to attach the optional WK-4 caster kit.

JBL STX818S Specs

Active or PassivePassive
System Type18" bass-reflex subwoofer
Frequency Range35 to 250 Hz (-10 dB)
Frequency Response40 to 120 Hz ±3 dB
Input Connection TypeSwitchable, +1/-1 or +2/-2
Low Pass Crossover80 Hz, 24 dB, octave LPF
High-Pass Filter30 Hz, 24 dB, octave HPF
Power Handling1,000W continuous
2,000W program
4,000W peak
Maximum SPL132 dB SPL peak
Sensitivity96 dB SPL (1W @ 1 m)
Low Frequency Driver1 x JBL 2242H 18" (457 mm) Super Vented Gap Cooled woofer
Nominal Impedance
Enclosure TuningDesigned for Crown amplifiers and dbx DriveRack
Mounting OptionsTop mounted M20 threaded socket for optional SS4-BK pole
EnclosureRectangular, 0.71" (18 mm) 13-ply birch/poplar laminate plywood
Handle or Carrying Type4 side handles, bottom mounting points for optional casters
FinishBlack DuraFlex finish
GrillePowder coated, black, 14-gauge perforated steel with acoustical transparent cloth backing
Input Connectors2 x Neutrik Speakon NL-4
Dimensions (H x W x D)22.0 x 22.4 x 28.3" (558 x 568 x 718 mm)
Weight100 lb (45 kg)
Packaging Info
Package Weight109.005 lb
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