JBL SRX928S - 2500W 2 x 18-inch Powered IP54-Rated Subwoofer in Black Finish

The JBL Professional SRX928S is a powerful and versatile 18-inch active subwoofer designed to seamlessly complement the SRX900 series full-range sound reinforcement systems. Ideal for a variety of small to large-scale applications, including live sound reinforcement, installations, and touring, the SRX928S delivers incredibly transparent, linear bass response with a maximum peak output of 140 dB. Whether used for ground-stacking or in cardioid configurations, this subwoofer excels in a wide range of environments, providing exceptional performance and flexibility.

At the heart of the SRX928S lies the JBL 2279H-1 dual 18-inch woofer, equipped with JBL's renowned Differential Drive technology. This advanced design utilizes dual three-inch voice coils and ferrite magnets to improve heat dissipation, reduce power compression, and provide a wider dynamic range compared to traditional single-coil drivers. The dual voice coil, dual gap design ensures maximum sensitivity and power handling in a lightweight, compact package. Capable of delivering powerful bass down to 31 Hz, the SRX928S offers deep, controlled low-frequency reproduction that complements full-range sound systems with ease.

With built-in Class-D amplification and DSP, the SRX928S offers a plug-and-play experience with optimized performance. The amplifier provides 1,100 watts of continuous power with 2,500 watts peak power, ensuring sufficient headroom for demanding applications. The subwoofer's advanced DSP includes 24 user-adjustable filters, 2,000 ms of delay, and specialized features like Array Size Compensation and FIR-based Throw Distance Correction filters, allowing for precise system optimization and performance tailoring. LevelMax limiting further protects the transducers by utilizing sophisticated excursion-control algorithms, ensuring the subwoofer can handle high output levels without compromising sound quality or damaging the components.

The SRX928S is designed with versatility in mind, supporting both omnidirectional and cardioid configurations. The user can easily switch between these two configurations using the preset settings available on the rear panel LCD or via software. This flexibility allows the SRX928S to be used in a wide variety of setups, whether in a traditional full-range array or as part of a highly focused subwoofer array for more directional bass coverage. The subwoofer is also equipped with dual Neutrik XLR connectors for balanced line-level audio input and output, simplifying integration into professional sound systems.

Built with durability and transportability in mind, the SRX928S is housed in an 18 mm plywood enclosure with a tough DuraFlex finish, ensuring it can withstand the rigors of touring and live performances. The subwoofer is rated IP54, offering protection against dust and moisture, making it suitable for use in a wide range of environments. The unit features a powder-coated 14-gauge steel grille with acoustically transparent black cloth backing, ensuring the components are safeguarded while preserving sound clarity.

The SRX928S offers extensive control options, including dual Neutrik etherCON connectors for network control via Harman HiControl. This allows for seamless integration with other SRX900 series products and gives users the ability to control and monitor the system via the rear-panel LCD, an external PC or tablet using the full-featured software package, or wirelessly through a standard off-the-shelf router. Whether for large-scale tours or smaller, more intimate events, the SRX928S provides the flexibility and power needed to deliver outstanding bass performance and clarity at high output levels.

Features

• JBL 2279H-1 dual 18-inch woofer with Differential Drive technology for improved power handling and reduced distortion
• Frequency response from 35 Hz to 120 Hz, with a maximum peak output of 140 dB (at 80 Hz preset)
• Built-in Class-D amplification delivering 1,100 watts continuous power and 2,500 watts peak power
• Advanced DSP with 24 user-adjustable filters, 2,000 ms delay, Array Size Compensation, and FIR-based Throw Distance Correction
• LevelMax limiting technology for excursion control and transducer protection
• Omnidirectional and cardioid configurations available via preset settings on rear-panel LCD or software
• Dual Neutrik XLR connectors for balanced line-level input and output, making integration into professional systems easy
• IP54-rated enclosure for protection against dust and moisture, making the subwoofer suitable for a variety of environments
• Rugged, tour-ready 18 mm plywood enclosure with DuraFlex finish and powder-coated 14-gauge steel grille
• Networking via dual Neutrik etherCON connectors, supporting Harman HiControl protocol for remote control and monitoring
• Dimensions: 22.6 x 26.9 x 26.9 inches, Net Weight: 98 lbs, Shipping Weight: 114 lbs

Specifications

Acoustical

• Frequency Range (-10 dB): 31 Hz - 100 Hz (Preset: 80 Hz)
• Frequency Response (±3 dB): 39 Hz - 80 Hz (Preset: 80 Hz)
• Coverage Pattern Options: Omnidirectional or Cardioid
• Maximum Peak Output: 140 dB SPL (Preset: 80 Hz)
• System Type: Active Subwoofer

Transducers

• Low Frequency: 2 x JBL 2279H-1, 18 in diameter, 8 ohms, dual 3.0 in diameter voice coil, ferrite Differential Drive

Audio Input

• Input Type: Balanced line level
• Connectors: 2 x Neutrik XLR (IN/OUT)
• Nominal Input Sensitivity: +6 dBu (system starts limiting with broadband noise and music)
• Maximum Input Level: 21 dBu
• Input Impedance: 100 kΩ

Amplifier

• Type: Class-D
• Number of Channels: 1
• Continuous Power: 1100 Watts
• Peak Power: 2500 Watts
• Cooling Type: Convection, external aluminum heat sink, internal on-demand fan

DSP

• Sample Rate: 48 kHz
• Bit Depth: 24 bit

User Interface

• Type: LCD screen, encoder, Back button, (4) LED Indicators (3 single, 1 bi-color)

Networking

• Type: TCP/IP
• Protocol: Harman HControl
• Speed: Dual 100 Mbps ports
• Connectors: 2 x Neutrik etherCON

AC Power

• Voltage Range:
  • Nominal: 100-240 VAC, 50/60 Hz
  • Limits: 80-260 VAC, 50/60 Hz
• Connectors: Dual (IN/OUT) Neutrik powerCON TRUE1 TOP

Current Draw

• Idle: 0.3 A
• Standby: 0.2 A
• Continuous: 4.8 A
• Maximum Instantaneous Peak: 18.1 A
• Peak Inrush: 2.9 A

Physical

• Enclosure: 18 mm plywood, Black DuraFlex finish, two integral recessed handles
• IP Rating: IP54
• Grille: Powder coated 1.8 mm (14-gauge) hex perforated steel with acoustically transparent black cloth backing
• Dimensions: 22.2 x 47.4 x 26.8 inches
• Net Weight: 98 lbs
• Shipping Weight: 180 lbs