RCF SUB 18-AS Professional Active Subwoofer | 18″, 2200W Peak

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 of RCF SUB 18-AS

• 2200Watt
• 135 dB max SPL
• 35 Hz – 400 Hz frequency response
• 18″ Woofer, 4.0″ voice coil
• Birch tour grade cabinet with polyurea coating
• Mono/Stereo XLR/TRS combo In + Link, Stereo XLR Xover Out
• Volume, polarity, and lowpass frequency selection

Applications of RCF SUB 18-AS

Live Music & Performances

• Provides deep, powerful bass reinforcement for live bands and PA systems.
• Ideal for handling low-frequency content (kick drums, bass instruments) with clarity and impact.

DJ Gigs & Club Events

• Delivers high SPL and extended low end that’s essential for dance music, DJ sets, and club sound systems.
• Works well as the bass backbone in portable DJ rigs.

Small to Mid-Sized Venues

• Great for bars, lounges, cafes, small theaters, and event spaces where controlled low frequencies improve the overall sound experience.
• Can be used as a single sub or in multiples for larger setups.

Portable PA Systems & Rental Fleets

• Its portable design and rugged build make it suitable for rental companies and setups that require frequent transport and re-deployment.
• Side handles and stackability help with quick stage setups.

Audio Reinforcement & Corporate AV

• Useful in corporate presentations, hybrid events, and AV installations where deep bass support enhances multimedia playback and spoken-word clarity.
• Can complement full-range speakers and top cabinets to achieve balanced sound reinforcement.

Complement to Full-Range Speaker Systems

• Designed to pair with 10″, 12″, or 15″ loudspeakers, ensuring strong low-end foundation for a complete sound system.

Specifications of SUB 18-AS