RCF SUB 15-AX Professional Active 15" Subwoofer

The RCF SUB 15-AX subwoofer provides portable, high-powered bass for live performances with fully featured digital signal processing, a color touch panel and remote Bluetooth control. Combining a precision-engineered transducer with a potent Class-D amplifier, it produces sound pressure levels up to 133dB with exceptional clarity and headroom. Its durable, polyurea-coated multi-ply hardwood cabinet and Powercon True1 Top connector stand up to the rigors of live use and transport.

Optimize Your Low End

Precisely adjusting your subwoofer's time alignment elevates sound quality and enhances bass response, giving audiences a visceral experience of the beat. With factory-tuned internal crossover presets for RCF speakers, you can have a show-ready system in minutes. Simply connect your mains, select a preset and the integrated FiRPHASE linear phase technology will match the subwoofer's phase down to the lowest frequencies.

Intuitive Digital Control

A 2.4" color touch panel provides intuitive control over parameters like eight recallable snapshots, a full-range 8-band parametric EQ and up to 45 meters of delay. Quickly access crossover presets, system EQ and delay settings and individual crossover settings. When pairing two SUB 15-AX subs, you can configure them for 2.2 operation. The RCF LiveRemote app for Android and iOS gives you the same convenient wireless control via Bluetooth.

Maximum Bass, Minimum Distortion

With 2,200W of Class-D power, the amplifier produces extreme SPLs with a fast attack, realistic transient response and minimal heat generation. Its low-distortion stereo input circuit features an advanced limiter to maintain signal integrity at any level. RCF amplifiers are engineered for maximum safety according to EN62368-1 standards and use a switch-mode power supply for high efficiency in a lightweight package.

Extended, Controlled Low End

RCF's engineers developed bass motion control, an innovative woofer excursion management system that removes the high-pass filter. It gives the 15" woofer freedom to reproduce the lowest audible frequencies without affecting stability or sound quality. By mapping the woofer's dynamic behavior, the BMC algorithm generates a custom profile to limit only overexcursions, providing extended linearity and bass integrity.