JBL JRX218S 18 in. Compact Subwoofer
Description
JBL JRX218S 18 in. Compact Subwoofer
The JBL JRX218S brings controlled, articulate sub-bass to home studios and project spaces without consuming excessive floor real estate. Its compact footprint and manageable weight make it easy to position for optimal low-end integration, while dual all-steel handles support quick placement adjustments during tracking and mixing sessions.
Power & Connectivity
Running 350 watts continuous and 1400 watts peak into a 4-ohm nominal impedance, this subwoofer integrates seamlessly with standard studio amplifiers and powered interfaces. Dual Neutrik Speakon connectors allow flexible wiring configurations for clean, noise-free sub integration into your monitoring chain.
Low-Frequency Performance
The 18" JBL woofer with stamped steel frame and 3" voice-coil delivers a rated maximum SPL of 133 dB peak at 1 meter, with 98 dB sensitivity ensuring controlled headroom for mixing and monitoring tasks. Frequency response extends from 53 Hz to 250 Hz (±3 dB), capturing the bass and low-midrange foundation critical for accurate mix translation across playback systems.
Key Features
- 18" JBL woofer with stamped steel frame and 3" voice coil
- 350 watts continuous / 1400 watts peak power handling
- 4 ohms nominal impedance
- Frequency Response: 53 Hz – 250 Hz (±3 dB)
- Frequency Range: 34 Hz – 250 Hz (−10 dB)
- 98 dB sensitivity at 1 watt / 1 meter
- 133 dB maximum SPL (peak @ 1 m)
- 19 mm MDF enclosure with advanced adhesives and mechanical fasteners
- Black carpet covering with 18-gauge hexagon perforated steel grille
- Dual Neutrik Speakon NL-4 connectors
- Cast aluminum 35 mm pole mount receptacle
- Dimensions: 23.5" H × 20.3" W × 22" D; Weight: 71 lbs
The JRX218S combines professional woofer engineering with straightforward system connectivity, delivering the low-end clarity and definition needed for mixing and monitoring in compact studio environments.
More Information
| Condition | New |
|---|---|
| Country of Manufacture | China |
Reviews
At a Glance
The JBL JRX218S is a professional-grade subwoofer optimized for live and mobile sound reinforcement—not a studio monitoring tool. Its tight, controlled low-end response (53–250 Hz, ±3 dB) and 133 dB peak SPL make it suited for reinforcing full-range systems in venues rather than mix-critical recording or mastering environments. Studio owners seeking bass extension for monitoring should look toward flat-response studio subwoofers designed for near-field mixing instead.
Who This Is For
Great for
- ✓ Live Sound Reinforcement
- ✓ Mobile PA Systems
- ✓ Venue Installation
- ✓ Event Sound
Not the best pick for
- – Home Listening
- – Studio Monitoring
- – Bedroom Practice
Frequently Asked Questions
What power amp or console do I pair this with?
The JRX218S accepts 350 watts continuous and 1400 watts peak into its 4-ohm impedance, working reliably with standard amplifier configurations and powered mixing consoles equipped with subwoofer outputs. Dual Neutrik Speakon NL-4 connectors support parallel wiring for flexible system integration.
How heavy is it, and can one person set it up?
At 71 pounds with dual all-steel handles and balanced weight distribution, the JRX218S is designed for single-operator transport and positioning. Its compact footprint (23.5" H × 20.3" W × 22" D) makes it practical for mobile deployments and varying venue sizes.
What frequency range does it cover?
Frequency response is rated 53 Hz to 250 Hz (±3 dB), with extended range down to 34 Hz (−10 dB). The 18" JBL woofer with 3" voice coil delivers 98 dB sensitivity and provides the critical bass and low-midrange spectrum needed for live sound reinforcement.
How does it compare to QSC KS118 or Electro-Voice ETX-18SP?
The JRX218S sits in the same compact 18-inch subwoofer category, offering 133 dB peak SPL, straightforward Speakon connectivity, and efficient power handling. Comparison models like the KS118 and ETX-18SP serve similar live-sound and mobile PA roles; check feature-by-feature specs and your amplifier configuration to determine best fit for your system.
Is this for studio recording or home listening?
No—the JRX218S is purpose-built for live sound reinforcement and venue installation, not studio monitoring or home listening. Its tight, venue-appropriate bass and high SPL output suit stage and mobile PA deployment, not mix-critical recording environments.
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