RCF SUB 18‑AS 18″ Professional Active Subwoofer

The SUB 18-AS is a portable 18″ high-power active subwoofer for live sound applications. It features a state-of-the-art transducer and a powerful 2200 Watts Class-D amplifier that delivers sound pressure levels up to 135 dB with exceptional headroom. Designed as the ideal complement for 10″, 12″ or 15″ loudspeakers, it includes Bass Motion Control algorithm for extended bass response at any volume. The connection panel features mono/stereo Combo inputs, an XLR stereo link, and XLR crossover outputs. Rear panel controls include volume, polarity, and low-pass frequency selection. The rugged all-wood cabinet with scratch-resistant polyurea coating makes it durable, easy to carry and install securely. With its versatility, sound quality, and high power output, the SUB 18-AS is perfect for small to mid-sized venues and portable applications.

Features

• Active 18″ professional powered subwoofer
• 2,200 W peak Class‑D amplifier for high output
• 135 dB maximum SPL for powerful bass impact
• Wide 35 Hz – 400 Hz frequency response
• Innovative Bass Motion Control for extended low‑end performance
• Rugged birch plywood cabinet with polyurea coating
• Mono/stereo combo XLR/TRS inputs + XLR crossover outputs
• Rear controls for volume, polarity, and low‑pass selection
• Ideal for live sound, DJ setups, bands, and portable PA systems
• Built‑in protection circuitry and efficient convection cooling

Specifications