The JBL SRX928S is a dual 18-inch active subwoofer designed to complement SRX900 full-range sound reinforcement systems. The subwoofer houses two JBL 2279-1 18-inch woofers, featuring Differential Drive -- JBL's dual voice coil, dual gap technology -- to deliver better heat dissipation, lower power compression, and wider dynamic range than conventional single-coil designs.

Built-in DSP and amplification offer a plug and play experience, while providing consistency and optimum performance anywhere in the world. The SRX928S incorporates a large central low frequency port design that improves airflow and reduces audible turbulence, even at high output levels. A full-featured software package gives users control of the system on various platforms, including Windows, macOS, and iPad OS.

JBL's SRX900 Series embodies the advanced performance principles that drive JBL's development of audio products that make a real difference in the world of professional audio. This next-generation family of powered line arrays and subwoofers addresses the growing need for scalable small and medium-format professional sound-reinforcement solutions for rental companies, fixed installations and musicians seeking the ultimate combination of performance and portability.

Features:

- High-performance, high-density system solution in a truck-pack friendly format

- High-power-handling transducers deliver low distortion, high fidelity, and class-leading output

- Built-in, passively cooled Class D amplification with a universal power supply

- Dual Ethernet ports with Neutrik etherCON connectors

- Supports HARMAN HControl Ethernet

- User-controllable DSP

- LevelMax limiting uses sophisticated excursion-control algorithms to protect transducers

- Rear-panel LCD provides complete access to control features

- Reinforced 18mm plywood enclosures

- Transducers: (2) JBL 2279H-1 18-inch diameter, dual 3-inch voice coil, ferrite Differential Drive

- Frequency Response: 31 Hz - 100 Hz

- Audio I/Os: (2) Neutrik XLR

- Dimensions: 565 mm x 1,205 mm x 681 mm (22.2 in x 47.4 in x 26.8 in) (H x D x W)

- Weight: 70.3 kg (155 lb)