JBL SRX828S - 1200W 2 x 18-inch Passive Portable Subwoofer in Black Finish

The JBL Professional SRX828S is a high-performance, passive dual 18-inch subwoofer designed to deliver exceptional low-frequency output and powerful bass for various applications. Part of the SRX800 series, this subwoofer excels in both small and medium-sized installations and tours. It is an integral component of a comprehensive, fully configurable loudspeaker system when used alongside other SRX800 full-range systems and subwoofers. The SRX828S is built for rugged durability and can be configured in a variety of ways, including stacked in a cardioid configuration, providing the flexibility needed for large-scale events and performances. Whether used as a main subwoofer or as part of an expansive sound system, it provides incredible, extended low-frequency response for high-impact sound.

The SRX828S features two 18-inch woofers equipped with JBL's patented Differential Drive technology, which reduces weight while maximizing amplifier efficiency. The woofers are powered by dual ferrite drivers and feature 3-inch voice coils, delivering minimal distortion and extending low-frequency response. This subwoofer handles up to 1200 watts continuously, with a peak power handling of 4800 watts, ensuring consistent, clean bass even at high output levels. It is capable of producing a maximum SPL of 141 dB, providing the high-output performance required for large venues and demanding sound environments.

JBL has engineered the SRX828S to integrate seamlessly into Harman Audio Architect, with full support for Crown I-Tech HD amplifiers and various tunings, making it an ideal solution for professional sound engineers and designers. The subwoofer includes features like an M20 threaded pole cup for mounting and indexing feet that allow for versatile stacking and cardioid deployment. These features help optimize performance in various setups, ensuring reliable performance across different configurations.

The SRX828S is built to withstand the rigors of touring and demanding installations. Its enclosure is constructed from 18mm poplar plywood, which ensures the durability and structural integrity needed for long-term use. The subwoofer is protected by JBL's renowned DuraFlex finish, which provides resistance against the wear and tear of the road. A powder-coated, 14-gauge perforated steel grille provides additional protection to the internal components, while acoustically transparent black cloth backing ensures sound quality is unaffected. This subwoofer is also equipped with eight handles, making it easier to transport and set up on location. Additionally, it is compatible with the JBL WK-45 caster kit for added mobility.

Features

• Dual 18-inch woofers with JBL's Differential Drive technology for reduced weight and high efficiency
• Power handling: 4800W peak, 2400W program, 1200W continuous
• Frequency range: 47 Hz to 120 Hz (-3 dB), 30 Hz to 150 Hz (-10 dB)
• Maximum SPL output: 141 dB, ensuring deep and powerful bass even at high volumes
• Full integration with Harman Audio Architect for easy control and optimization
• Nominal impedance: 4 Ohm
• M20 threaded pole cup for mounting and indexing feet for cardioid configuration
• Lightweight poplar plywood enclosure with JBL's DuraFlex finish for durability
• Dimensions: 26.79 x 47.42 x 22.57 inches; Weight: 137 lbs
• 8 handles for easy transport and setup
• 14-gauge perforated steel grille with acoustically transparent black cloth backing for durability and sound clarity
• Compatible with JBL WK-45 caster kit for enhanced mobility
• Crossover frequency: 80 Hz

Specifications

System

• System Type: Passive dual 18", subwoofer system
• Maximum SPL Output: 141 dB
• Frequency Range (-10 dB): 30 Hz to 150 Hz
• Frequency Response (-3 dB): 47 Hz to 120 Hz

Power

• System Power Rating: 4800W Peak, 2400W Program, 1200W Continuous
• Nominal Impedance: 4 Ohm
• Connectors: NL4 Input, NL4 Loop-thru (+/-1 or +/-2 Selectable)
• Operational Modes: Passive

Speaker

• LF Driver: (2x) 2279H
• Crossover Frequency: 80 Hz

Enclosure

• Material: 18 mm plywood
• Handles: 8
• Finish: Obsidian DuraFlex finish
• Grille: Powder coated, Obsidian, 14-gauge perforated steel with acoustically transparent black cloth backing
• Dimensions: 26.79 x 47.42 x 22.57 inches
• Weight: 137 lbs