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JBL STX818S 18in Passive Subwoofer

Model: STX818S

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  • Not yet reviewed

About: JBL STX818S 18in Passive Subwoofer

A single 18" compact high power subwoofer system in a front-loaded, vented enclosure designed for minimum frontal area provides 1,000 watts of continuous pink noise power handling, 2 kW program and 4 kW peak. The STX818S also comes equipped with a top-mounted M20 pole-mount and an optional wheel kit.


  • 18 in. Super Vented Gap™ woofer for extended low-frequency output.
  • Large port area for reduced distortion.
  • 20 mm threaded pole socket for solid, secure satellite speaker mounting.
  • Rugged DuraFlex™ coated enclosures sized to be truck pack friendly.
  • 14-Gauge steel grille lined with acoustically transparent cloth.


  • Frequency Range ( –10 dB)   :   35 Hz-250 Hz
  • Frequency Response (± 3 dB)   :   40 Hz-120 Hz
  • Sensitivity (1W/1m)   :   96 dB
  • Power Rating (Cont. Pink Noise/Program/Peak)   :   1000 W / 2000 W / 4000 W
  • Rated Maximum SPL   :   132 dB SPL Peak
  • Nominal Impedance   :   8Ω
  • Input Connectors   :   Two NL4
  • Operational Modes   :   Subwoofer
  • Dimensions (H x W x D)   :   558 mm x 568 mm x 718 mm (22.0" x 22.4" x 28.3")
  • Net Weight   :   45 kg (100 lbs)

UPC: 050036904148 is a Canadian authorized JBL retailer.

Reviews: JBL STX818S 18in Passive Subwoofer

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Warranty: JBL STX818S 18in Passive Subwoofer Warranty:

30 Days

Manufacturer's Warranty:

Pro Products:

The warranty on JBL professional loudspeaker products (except for enclosures, electronic components, and portable products) is valid for 5 years from the date of the first consumer purchase. Enclosures and electronic components are warranted for 1 year from the date of original purchase.

Effective 1 March 2005, portable products such as EON, JRX, MRX, PRX are warranted by Soundcraft Canada’s 2 year no-fault full warranty. During this time, if your speaker fails for any reason, it will be repaired at our expense. This includes parts, labor, and one-way shipping by ground transport. Exception: VRX and SRX are excluded from this warranty.