RCF SUB 18-AX Professional Active 18" Subwoofer

The RCF SUB 18-AX is a high-power 18" active subwoofer designed for professional live sound reinforcement. With a state-of-the-art transducer paired to a potent 2,200W Class-D amplifier, it delivers massive low-end extension down to 35Hz at sound pressure levels up to 135dB. Onboard DSP provides flexible signal control with adjustable crossovers, 8-band EQ, delay and cardioid configurations. Store your favorite settings as recallable presets using the easy-to-navigate color touch display or free iOS/Android app.

Massive Bass with Unparalleled Clarity

The specially optimized 18" woofer features a lightweight yet rigid cone and powerful magnet assembly for tight, controlled bass response even at the highest drive levels. An advanced cooling system with airflow vents keeps the woofer performing optimally, allowing you to push the SUB 18-AX to its limits without distortion or power compression. The built-in 2,200W Class-D amplifier delivers transient-accurate power with plenty of headroom for any live application.

Flexible Signal Control at Your Fingertips

Tweak the SUB 18-AX to perfectly match your main speakers using the adjustable high- and low-pass crossovers with selectable slopes. An 8-band EQ helps you sculpt the ideal bass curve for any venue. Delay control allows precise alignment of the subwoofer's output with your mains. Save your settings to one of the recallable presets for fast setup at your next gig. The RCF LiveRemote app provides wireless control over all DSP functions from your mobile device.

Roadworthy Design Built to Last

The SUB 18-AX features a rugged polyurea-coated plywood enclosure and durable powder-coated steel grille to withstand the rigors of transport and use. All controls and connections are safely housed behind a protective end panel. The powerCON TRUE1 input provides a secure power connection and integrated circuit protection. With its combination of potent power, flexible DSP and robust build quality, the SUB 18-AX delivers the performance and reliability professional sound engineers demand.