JBL SRX818SP

SRX800: A JBL Benchmark Designed for Modern Mobile Sound Reinforcement

With the SRX800 series, JBL has created a range of powered speakers focused on performance and reliability, aimed at sound professionals who demand a complete, coherent, and quick-to-deploy system. The SRX818SP fits this philosophy: an active subwoofer designed to provide a solid bass foundation while remaining easy to integrate into an SRX800 setup thanks to a consistent design (JBL transducers, modern amplification, and advanced digital processing).

An Active Subwoofer for DJs, Live Shows, Events, and Rentals

The JBL SRX818SP targets users seeking a powered subwoofer capable of maintaining high output over time: mobile DJs, live bands, event providers, rental companies, multipurpose venues, and clubs. Its bass-reflex tuning and 38 cm driver effectively reinforce the low end for kicks, basslines, and drum hits while maintaining clarity when paired with SRX tops.

Thanks to its optimized size and M20 pole mount, it naturally sits beneath a satellite speaker on a pole for a compact and visually clean setup, practical for weddings, corporate events, showcases, or stage setups where floor space is limited.

Power, DSP, and Network Control: A Subwoofer Ready for Modern Systems

A 38 cm JBL 2279F for Dense and Controlled Bass

At the heart of the SRX818SP, the JBL 2279F (38 cm) is housed in a bass-reflex enclosure to deliver bass that is both generous and efficient. This configuration aims for physical reproduction and good level handling to support powerful satellites without sounding strained. The result is a present low end, suitable for electronic music as well as live performances, and clean enough for vocals and instruments to remain clear above.

Sharc DSP Processing: Precision, Presets, and System Optimization

The integrated digital processing relies on a DSP platform designed for fine and repeatable adjustments. The goal in professional contexts is simple: save setup time, secure the system (limiting), and adapt the subwoofer's response to room constraints (resonances, placement, coupling with tops). Compatibility with presets and the use of FIR filters contribute to more precise tuning, with increased coherence when multiple SRX800 elements are used together.

Class D Amplification: Efficiency and Headroom for Performances

The SRX818SP features Class D amplification rated at 1000 W peak. This architecture is particularly suited for mobile sound reinforcement, offering good efficiency, optimized thermal management, and useful headroom when the program becomes demanding. The series also highlights Crown's DriveCore amplification technology, designed to deliver high performance in a road-ready format.

HiQnet: Network Supervision and Configuration

In rental fleets, multi-speaker installations, or scalable systems, network management becomes a real advantage. The SRX818SP integrates into the HiQnet ecosystem to facilitate configuration and control. Connection can be made via Ethernet cabling through the etherCON connector, and adding a Wi-Fi router allows control from compatible mobile devices. This centralized control approach helps maintain consistent settings across multiple sound points and quickly adjust the system according to on-site needs.

Technical specifications

Bluetooth

No

Type	18-inch powered subwoofer, bass-reflex	Suspension	M20 pole mount (20 mm) for coupling pole
Frequency response	35 Hz to 120 Hz (+/-3 dB)	Connectors	2 x Neutrik XLR / 6.35 mm Jack (inputs)
Max SPL at 1 m	135 dB	Finish	Black DuraFlex
Amplification	1000 W peak, Class D	Dimensions	683 x 684 x 575 mm
Components	low frequencies JBL 2279F, 460 mm (18 inches)	Weight	39.5 kg