Description
The ASB7128 is a high-power lightweight front-loaded vented subwoofer enclosure designed for professional deep bass reinforcement. It features two JBL 2269H Ultra Long Excursion 18-inch Differential Drive® woofers with neodymium magnets, dual voice coils, dual gaps, Vented Gap Cooling™, and ultra-robust composite cones for high excursion and long service life. With 4000W continuous pink noise power handling, 16000W peak capability, and frequency response down to 20 Hz, it is ideal for AE Series systems, auditoriums, clubs, theatres, performance venues, and large commercial installations.
More Information
Key Features
- High-power lightweight front-loaded vented subwoofer.
- Equipped with two JBL 2269H 18-inch Differential Drive® woofers.
- Ultra Long Excursion design for powerful deep bass.
- Dual voice coil and dual gap neodymium magnet transducers.
- JBL Vented Gap Cooling™ for improved reliability.
- 4000W continuous pink noise power handling.
- 16000W peak power handling capacity.
- Peak-to-peak maximum excursion of 89 mm.
- Large vent area for high output with low distortion.
- Parallel and discrete switchable input modes.
- FIR tuning set matches phase profile to full-range AE Series models.
- Suitable for ground-stacked or suspended applications.
- Durable birch plywood enclosure with DuraFlex™ finish.
Technical Specification
- Product Type: Front-Loaded Vented Subwoofer
- Frequency Range: 20 Hz – 1 kHz (-10 dB)
- Frequency Response: 25 Hz – 1 kHz (±3 dB)
- Transducer Power Rating: 4000W, 16000W Peak
- System Power Rating: 2400W, 9600W Peak
- Input Modes: Drivers Parallel / Drivers Discrete
- Maximum SPL: 135 dB Continuous, 141 dB Peak
- System Sensitivity: 99 dB SPL, 1W at 1m
- Nominal Impedance: 4 Ohms in Parallel Mode
- Nominal Impedance in Discrete Mode: 2 x 8 Ohms
- LF Driver: 2 x 2269H 460 mm 18-inch Differential Drive® VGC™ Drivers
- Voice Coil: 100 mm 4-inch Dual Coil Dual Gap
- Driver Magnet: Neodymium
- Maximum Excursion: 89 mm Peak-to-Peak
- Enclosure: 16 mm Exterior Grade 11-Ply Birch Plywood
- Finish: Black DuraFlex™, White Available on Request
- Grille: Powder-Coated 14 Gauge Perforated Steel with Black Foam Backing
- Input Connectors: NL4 Neutrik Speakon® and CE-Compliant Covered Barrier Strip Terminals
- Suspension Attachment: 16 M10 Threaded Hardware Points
- Environmental Rating: Mil-Std 810, IP-x3 per IEC529
- Dimensions: 1092 x 560 x 815 mm
- Net Weight: 71.9 kg







