JBL ASB6118-WH Single 18" Subwoofer

The ASB6118-WH is a heavyweight professional subwoofer engineered for consistent low-end reproduction in installed sound and live reinforcement applications. Its vented front-loaded design and substantial cabinet construction deliver controlled bass extension without the resonance issues common to sealed designs, making it a reliable foundation for full-range systems in mid-to-large venues.

Design & Build

Built from 16 mm exterior-grade 11-ply birch plywood, the cabinet resists flex and vibration while maintaining structural integrity under sustained high-output conditions. The 460 mm (18-inch) SVG Super Vented Gap driver with a 100 mm (4-inch) voice coil handles extended power without fatigue, and the front-mounted grille with acoustically transparent foam backing protects the driver while preserving frequency response. Weighing 98 lbs with M10 threaded suspension points, this unit integrates easily into flown or ground-stacked arrays.

Audio Performance

With 800W long-term power handling (3200W peak) and 98 dB system sensitivity, the ASB6118-WH generates 129 dB continuous SPL at 1 meter with 135 dB peak capability across its 35 Hz–1 kHz (±3 dB) frequency response. This performance envelope covers the critical low-frequency band (30–500 Hz) where the subwoofer must blend seamlessly with main speakers while delivering the impact modern live sound and installed systems demand.

Key Features

• 460 mm (18 in) SVG Super Vented Gap low frequency driver
• 100 mm (4-inch) voice coil
• 8 Ohm nominal impedance
• 1200W power capacity (AES, 4800W peak, 2 hrs)
• 800W long-term power (3200W peak, 100 hrs)
• Frequency range: 28 Hz–1 kHz (−10 dB)
• Frequency response: 35 Hz–1 kHz (±3 dB)
• Maximum SPL: 129 dB continuous / 135 dB peak (1m)
• 98 dB system sensitivity (1W @ 1m)
• Vented, front-loaded cabinet configuration
• 16 mm 11-ply birch plywood construction
• 14-gauge perforated steel grille with foam backing
• Dimensions: 21.6 × 22.1 × 32.2 inches
• Weight: 98 lbs
• M10 threaded suspension mounting points

The ASB6118-WH delivers the output, durability, and integration flexibility expected from professional JBL subwoofers, making it a solid choice for venues and systems requiring transparent, controlled low-frequency extension.