Dual 18-inch Powered Subwoofer The 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. The SRX928S is a dual 18-inch active subwoofer designed to complement SRX900 full-range sound reinforcement systems. The sub¬woofer 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 new, full-featured software package gives users control of the system on various platforms, including Windows, macOS, and iPad OS.   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