JBL JRX218S 18' Passive Subwoofer
Get amazing sound with this affordable, reliable subwoofer!
• Compact size for easy setup
• High power capacity for intense bass
• Durable construction for long-lasting use
The JRX218S is an 18' compact direct-radiation subwoofer perfect for live sound and music playback. It boosts low frequency performance in full-range systems. Driven by a large JBL 18' woofer with a stamped steel frame and 3' voicecoil, it's rated at 350 watts (continuous) and 1400 watts (peak) after JBL Professional's 100 hour extended life test.
Features: - 18 in. compact subwoofer for easy placement.
- 350 W (continuous), 1400 W (peak) power for strong bass.
- Rugged 19 mm (.75 in) MDF enclosure with advanced construction for durability and great low-frequency sound. Covered in black carpet.
- Top mounted, cast aluminum 36 mm pole mount receptacle for using as a base for midhigh speaker cabinet with optional SS3BK pole.
- Non-resonant, all steel handles for easy carrying.
- Attractive 18-gauge perforated steel grille to protect components.
Specifications: - Power Rating: 350 W / 1400 W
- Frequency Range (-10 dB): 34 Hz - 250 Hz
- Frequency Response (±3 dB): 53 Hz - 250 Hz
- Sensitivity (@1m): 98 dB
- Nominal Impedence: 4 ohms
- Recommended Amplifier Power: 350 W to 700 W into 4 ohms
- Maximum SPL: 133 dB peak, @1 m (3.3 ft)
- Dimensions: (H x W x D): 605 mm x 508 mm x 551 mm (23.8 in x 20.0 in x 21.7 in)
- Net Weight: 32.2 kg (71 lb)
- Low Frequency Driver: M118-4
- Input Connectors: Neutrik Speakon NL-4 (x2); parallel
- Grille: 18-gauge, powder-coated steel


The JBL JRX218S 18-Inch Passive Compact Subwoofer is a great choice for live sound events and music playback. It's perfect for those who want to enhance their audio experience. With dimensions of 605 mm x 508 mm x 551 mm (23.8 in x 20.0 in x 21.7 in) and a net weight of 32.2 kg (71 lb), it's easy to handle and set up. This subwoofer offers powerful bass with its 350 W (continuous) and 1400 W (peak) power capacity, making it ideal for creating an immersive sound environment.