JBL ASB7128-WH - 4000W 2 x 18-inch Passive Front Loaded Installation Subwoofer in White Finish

The JBL Professional ASB7128-WH is a high-performance, 4000W subwoofer designed for demanding sound reinforcement applications, providing exceptional low-frequency performance with its dual 18-inch JBL 2269H Ultra Long Excursion Differential Drive woofers. These advanced woofers feature neodymium magnets, dual voice coils, dual gaps, and JBL's proprietary Vented Gap Cooling (VGC) technology, which ensures minimal distortion, maximum excursion, and enhanced thermal efficiency. Capable of a peak-to-peak excursion of 89 mm (3.5 inches), the ASB7128-WH is built to deliver powerful, clean bass in a wide range of professional environments.

Crafted for durability and high performance, the subwoofer's enclosure is constructed from 16 mm (5/8 inch) exterior-grade 11-ply birch plywood, which is further reinforced to maximize low-frequency output and minimize unwanted vibrations. The ASB7128-WH is coated with JBL's rugged DuraFlex finish in white, providing a clean and professional appearance that is also highly resistant to wear and tear in challenging environments. The 14-gauge powder-coated steel grille is backed with acoustically transparent foam, offering additional protection for the woofers while preserving sound quality. This subwoofer is part of JBL's AE Series, a versatile family of loudspeakers designed for a variety of fixed installation and live sound applications, including concert halls, auditoriums, houses of worship, and large-scale venues.

The subwoofer features a 4000W continuous power handling capacity (16000W peak), ensuring it can handle the most demanding bass-heavy signals without distortion. Its large vent area enhances airflow, contributing to high output with minimal distortion. The ASB7128-WH offers a frequency range from 20 Hz to 1 kHz (-10 dB) and a frequency response from 25 Hz to 1 kHz (±3 dB), making it capable of producing deep, full-range bass for a wide variety of applications. With a maximum SPL of 135 dB continuous average and 141 dB peak, the ASB7128-WH is capable of filling large venues with powerful, room-shaking bass.

For flexible installation, the ASB7128-WH comes with 16 M10 threaded suspension points, allowing for easy mounting in a variety of configurations, whether ground-stacked or suspended. It is designed to integrate seamlessly with other AE Series products, whether as part of a stand-alone array or in combination with full-range loudspeakers. The input mode can be switched between parallel and discrete settings, providing further versatility for different system configurations. This subwoofer is equipped with NL4 Neutrik Speakon and CE-compliant barrier strip terminals, with a loop-through capability for ease of multi-unit setup.

The ASB7128-WH also features environmental durability with a rating of IP-x3, ensuring reliable operation in demanding environments. Whether used for large concerts, theater productions, or permanent installations, the ASB7128-WH delivers professional-grade performance that meets the needs of demanding audio professionals.

Features

• 2 x 18-inch JBL 2269H Ultra Long Excursion Differential Drive woofers with 100 mm (4-inch) voice coils
• Peak-to-peak excursion of 89 mm (3.5 inches) for minimal distortion and maximum output
• 4000W continuous power handling (16000W peak) for high-output performance
• Frequency range: 20 Hz - 1 kHz (-10 dB), frequency response: 25 Hz - 1 kHz (±3 dB)
• Maximum SPL: 135 dB continuous average (141 dB peak) from 25 Hz to 200 Hz
• System sensitivity: 99 dB at 1W (2.83V) @ 1m
• Nominal impedance: 4 ohms in parallel-drive mode, 2 x 8 ohms in discrete-drive mode
• Transducer power rating: 4000W continuous (16000W peak), 2 hours
• Long-term system power rating: 2400W (9600W peak), 100 hours
• Durable enclosure constructed from 16 mm (5/8 inch) exterior-grade 11-ply birch plywood
• 16 M10 threaded suspension points for flexible mounting options
• White DuraFlex finish for a professional appearance and long-lasting durability
• Grille: Powder-coated 14-gauge perforated steel with acoustically transparent black foam backing
• Input connectors: NL4 Neutrik Speakon and CE-compliant barrier strip terminals (accepts up to 10 AWG wire)
• Environmental ratings: Mil-Std 810; IP-x3-rated for water resistance
• Dimensions: 43 x 22 x 32.1 inches
• Weight: 158.5 lbs
• Optional accessories: M10 x 35 mm forged shoulder eyebolts with washers, U-Bracket MTU-1

Specifications

System

• Frequency Range (-10 dB): 20 Hz - 1 kHz
• Frequency Response (±3 dB): 25 Hz - 1 kHz
• Input Modes: Drivers Parallel / Drivers Discrete
• Transducer Power Rating (AES): 4000 W (16000 W peak), 2 hrs
• Long-Term System Power Rating: 2400 W (9600 W peak), 100 hrs
• Maximum SPL: 25 Hz - 200 Hz: 135 dB-SPL cont avg (141 dB peak)
• System Sensitivity (1W @ 1m): 25 Hz - 200 Hz: 99 dB-SPL, 1W (2.0V) @ 1m
• Nominal Impedance: 4 ohms in parallel-drive mode, 2 x 8 ohms in discrete-drive mode

Transducers

• Low Frequency Driver: 2 x JBL 2269H, 460 mm (18 in) dia., 100 mm (4 in) Dual Coil Dual Gap neodymium Differential Drive, VGC drivers

Physical

• Enclosure: Rectangular cabinet, 16 mm (5/8 in) exterior grade 11-ply birch plywood
• Suspension Attachment: 16 points (4 top, 4 bottom, 4 each side), M10 threaded hardware
• Finish: Black DuraFlex finish. White available upon request
• Grille: Powder coated 14 gauge perforated steel, with acoustically transparent black foam backing
• Input Connector: NL4 Neutrik Speakon and CE-compliant covered barrier strip terminals. Barrier terminals accept up to 5.2 sq mm (10 AWG) wire or max width 9 mm (.375 in) spade lugs. Speakon in parallel with barrier strip for loop-through
• Environmental Specifications: Mil-Std 810; IP-x3 per IEC529
• Dimensions: 43 x 22 x 32.1 inches
• Weight: 158.5 lbs
• Optional Accessories: M10 x 35 mm forged shoulder eyebolts with washers, U-Bracket MTU-1