JBL SRX818S - 600W 18-inch Passive Portable Subwoofer in Black Finish

The JBL Professional SRX818S is a passive portable subwoofer from the SRX800 series, engineered to deliver exceptional low-frequency performance in a variety of applications, including small to medium-sized installations and touring setups. The SRX818S is designed to integrate seamlessly with other SRX800 full-range speakers and subwoofers, creating a fully configurable, high-performance loudspeaker system. Whether used in a front-fill configuration, stacked for cardioid deployment, or placed as part of a larger PA system, the SRX818S provides powerful, clean bass response for a variety of live sound and installation environments.

At the heart of the SRX818S is JBL's advanced 18-inch woofer, which incorporates JBL's patented Differential Drive technology. This innovation allows for reduced weight and improved amplifier efficiency while maintaining exceptionally low distortion and extended low-frequency response. The woofer's 3-inch voice coils and dual ferrite drivers are optimized for delivering high output levels without compromising clarity, making it ideal for high-demand applications where consistent, powerful bass is essential.

The SRX818S is capable of reaching a maximum SPL output of 135 dB, ensuring it delivers powerful, impactful bass even in large venues. The system's frequency response spans from 45 Hz to 150 Hz, ensuring it effectively reproduces low-end frequencies while maintaining clean, tight sound. With a frequency range of 28 Hz to 150 Hz (-10 dB), the SRX818S ensures deep, extended bass that is crucial for many professional sound applications.

Built to withstand the demands of professional use, the SRX818S features a rugged enclosure constructed from 18mm plywood, reinforced with tongue and groove joints for maximum strength and durability. The subwoofer is coated in JBL's industry-leading DuraFlex finish, offering excellent protection against wear and tear, ensuring it can withstand the rigors of touring and high-impact environments. The speaker is also equipped with a powder-coated 14-gauge steel grille with acoustically transparent black cloth backing, providing durability and added protection to the internal components.

The SRX818S is designed for flexible deployment with its M20 threaded pole cup and indexing feet, making it compatible with a variety of setups. It can be stacked for cardioid configurations, allowing for targeted low-frequency coverage in large shows or installations. The speaker's versatility is further enhanced with the ability to integrate with Crown I-Tech HD amplifiers, which can be controlled as part of a comprehensive audio system via Harman Audio Architect.

Features

• Passive 18-inch subwoofer designed for high-performance bass reproduction
• Power handling: 2400W peak, 1200W program, 600W continuous
• Frequency response: 45 Hz to 150 Hz (-3 dB), 28 Hz to 150 Hz (-10 dB)
• Maximum SPL output: 135 dB, providing deep, powerful bass for large venues
• JBL Differential Drive technology for reduced weight, increased efficiency, and lower distortion
• M20 threaded pole mount and indexing feet for flexible setup and cardioid configurations
• Rugged 18mm plywood enclosure with JBL's DuraFlex finish for durability and longevity
• Compatible with JBL WK-45 caster kit for easy transport
• Grille: 14-gauge powder-coated steel with acoustically transparent black cloth backing
• Connectors: NL4 input, NL4 loop-thru (+/-1 or +/-2 selectable)
• Dimensions: 26.89 x 26.92 x 22.62 inches; Weight: 78 lbs

Specifications

System

• System Type: Passive 18", subwoofer system
• Maximum SPL Output: 135 dB
• Frequency Range (-10 dB): 28 Hz to 150 Hz
• Frequency Response (-3 dB): 45 Hz to 150 Hz

Power

• System Power Rating: 2400W Peak, 1200W Program, 600W Continuous
• Nominal Impedance: 8 Ohm
• Connectors: NL4 Input, NL4 Loop-thru (+/-1 or +/-2 Selectable)
• Operational Modes: Passive

Speaker

• LF Driver: 2279H
• Crossover Frequency: 80 Hz

Enclosure

• Material: 18 mm plywood
• Suspension / Mounting: M20 Threaded Pole Mount
• Handles: 4
• Finish: Obsidian DuraFlex finish
• Grille: Powder coated, Obsidian, 14-gauge perforated steel with acoustically transparent black cloth backing
• Dimensions: 26.89 x 26.92 x 22.62 inches
• Weight: 78.0 lbs