JRX218S

18" CompactSubwoofer

JRX218S
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18" Compact Subwoofer

The JRX218S is driven by a massive JBL 18" woofer with a cast frame and 3" voice-coil.

 

Features

  • 18 in. compact subwoofer.
  • 350 W (continuous), 1400 W (peak) power capacity.
  • The rugged enclosure is constructed from 19 mm (.75 in) MDF (Medium Density Fiberboard) using advanced adhesives and mechanical fastener technology for durability and improved low-frequency performance. The enclosure is covered in black carpet.
  • A top mounted, cast aluminum 35 mm pole mount receptacle can receive an optional SS3BK pole to facilitate use of the JRX218S as a base for a midhigh speaker cabinet.
  • Non-resonant, all steel handles are used.
  • Attractive 18-gauge perforated steel grille protects components from damage.
 

Downloads

Specifications
  Size Uploaded
file type icon JRX218S Spec Sheet
updated: Apr 2019
298 KB Apr 2019
Brochures
  Version Language Size Uploaded
    2.54 MB Oct 2020
file type icon JBL 2025 PPA Brochure
en version B, updated: Aug 2025
en  8.45 MB Aug 2025
Compliances
  Size Uploaded
119 KB Oct 2020
Images
  Size Uploaded
file type icon JRX218S Front Angle
updated: Apr 2019
479 KB Apr 2019
file type icon JRX218S Back
updated: Apr 2019
316 KB Apr 2019

If any of the links above result in strange characters in your browser, please right-click the file to save it to your computer.

Parts & Service

Specifications

Power Rating 350 W / 1400 W
Frequency Range (-10dB) 34 Hz - 250 Hz
Frequency Response (±3 dB) 53 Hz - 250 Hz
Sensitivity (@1m) 98 dB SPL
Nominal Impedence 4 ohms
Recommended Amplifier Power 350 W to 700 W into 4 ohms
Maximum SPL (1m) 133 dB
Dimensions (H x W x D) 605 mm x 508 mm x 551 mm (23.5 in x 20.3 in x 22 in)
Net Weight 32.2 kg (71 lb)
LF Driver M118-4
Inputs Neutrik® Speakon® NL-4 (x2); parallel
Enclosure MDF (Medium Density Fiberboard) covered in black carpet.

Accessories

JRX218S-CVR-CX | Convertible Cover for JRX218S
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Convertible Cover for JRX218S. Allows Full Functionality Of Speaker While Inside Protective Cover. Front Cover Opens to Reveal Loudspeakers, Full Access To Rear Inputs & Carry Handles.


JBL-SUB-18T | Rolling Sub Transporter Bag for JBL 18" Sub
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Padded Sub Transporter. Water Resistant Black Nylon, Polyethylene Grille Protector, Large Accessory Pocket, Exterior Lifting Handles, Integrated Caster Board with (4) Swivel Casters. Fits EON518S, JRX118S, JRX118SP, PRX518S.


JBLTRIPOD-GA | JBL Gas Assist Speaker Tripod
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Lift-assist Aluminum Tripod Speaker Stand with Integrated Speaker Adapter. The JBLTRIPOD-GA is an incredibly easy speaker stand to use thanks to the internal pneumatic shock that literally raises the speaker for you. The stand’s internal shock easily raises speakers weighing 35 lbs and less with no effort from the user.
  • Gas assist adjustable from 3’8” (1118MM) to 6’7” (2007MM)
  • Gas assist tripod that lifts the speaker for you using an internal air-powered shock
  • Designed for use with the following JBL models; JRX200,PRX400, STX800, EON, PRX700, VRX900

Documentation
JBLTRIPOD-MA | JBL Manual Adjust Speaker Tripod
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Aluminum Tripod Speaker Stand with Secure Locking Pin and 150 lbs Load Capacity. To assist you in lifting your speaker, we’ve added a durable Lift Ring on the telescoping tube to give your upper hand something to push against when raising the speaker to the desired height.

  • Adjustable from 4’2” (1270MM) to 6’5” (1956MM)
  • Manual adjust speaker tripod
  • Designed for use with the following JBL models; JRX200, PRX400, STX800, EON, PRX700, VRX900

Documentation
JBLPOLE-GA | JBL Gas Assist Speaker Pole
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Gas Assist Speaker Pole with M20 Threaded Lower End, 38mm Pole & 35mm Adapter. The JBLPOLE-GA is the easiest speaker stand to use thanks to the internal pneumatic shock that literally raises the speaker for you. The stand’s internal shock easily raises speakers weighing 35 lbs and less with no effort from the user.

  • Raise and Lower the Speaker with Ease!
  • Strong and Easy-to-Use “Z” knob
  • Incredibly Sturdy Pole
  • M20 Threaded Pole Mount
  • Fits most subwoofers with standard M20 pole threading (JBL PRX, VRX, STX and SRX818)- Please reffer to individual products

Documentation
JBLPOLE-MA | JBL Manual Adjust Speaker Pole
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Manual Adjust Speaker Pole with M20 Threaded Lower End, 38mm Pole & 35mm. The JBLPOLE-MA features an amazing height adjustment collar that features an ergonomic “Z” knob that provides comfortable adjustment. The strongest fitting made, the height adjustment collar prevents over- tightening and breakage issues associated with all plastic designs.

  • Lightweight
  • Metal die-cast collars
  • M20 Threaded socket
  • Fits all subwoofers with standard M20 pole threading (JBL PRX, VRX, STX and SRX818)- Please reffer to individual products to confirm

Documentation

Support/FAQs

HARMAN Professional Solutions: