NEW RCF SUB 18-AX aktiver 18" PA-Subwoofer

RCF SUB 18-AX active 18" PA subwoofer

Introduction

Are you looking for a professional subwoofer that not only delivers deep bass for live performances, DJ sets, corporate events or mobile sound reinforcement tasks, but also intelligently controls your entire PA system? The RCF SUB 18-AX active 18" PA subwoofer was developed precisely for users who want to combine powerful bass reproduction, modern signal processing and reliable touring capability in a compact, active system.

Especially in small to medium-sized venues, the subwoofer plays a decisive role in determining whether music is merely audible or physically perceptible. The RCF SUB 18-AX active 18" PA subwoofer achieves a maximum sound pressure level of up to 135 dB and offers the necessary reserves for powerful, controlled and transparent bass reproduction with its 18-inch woofer, bass reflex enclosure and powerful 2200 watt Class D power amplifier module.

This subwoofer is particularly interesting for musicians, DJs, event technicians, rental companies and fixed installations where quick set-up, flexible adjustment and professional sound are required. Thanks to the digital crossover with presets, 8-band EQ, routing, delay, cardioid functions and remote control via the RCF LiveRemote app, the subwoofer not only becomes a bass extension, but also the central control center of the entire speaker system.

Manufacturer

RCF has been a renowned manufacturer of professional sound reinforcement technology for many years and is particularly known for its powerful active loudspeakers, subwoofers, transducers and complete PA solutions. The brand combines Italian engineering skills with practical solutions for live sound, installation, touring and mobile applications. With the RCF SUB 18-AX active 18" PA subwoofer, this experience is reflected in a sophisticated combination of modern electronics, robust cabinet construction and high-quality transducers.

An important part of the RCF philosophy is the close coordination between amplifier, speaker chassis, enclosure and digital signal processing. The result is not a randomly assembled system, but a precisely tuned tool for professional sound reinforcement. The built-in 18-inch woofer with 4-inch voice coil has been designed for high power handling, efficient conversion of amplifier power and low distortion. The Class D power amplifier delivers high performance with low weight and low heat generation, which is a decisive advantage in mobile applications.

RCF also sets professional standards in terms of mechanical workmanship. The multiplex hardwood housing with polyurea coating is designed for frequent transportation, changing locations and intensive use. Ergonomic side handles, a sturdy steel front grille, acoustic foam and the weather-protected powerCON TRUE1 TOP connection underline the professional standard of this subwoofer.

Technical details

The RCF SUB 18-AX active 18" PA subwoofer works with an 18-inch woofer in a powerful bass reflex cabinet. The frequency response of 35 Hz to 120 Hz ensures a deep, musical and powerful reproduction in the bass range. This makes the subwoofer an excellent addition to tops with 10, 12 or 15-inch woofers. Whether electronic music, live band, speech with musical recordings or club-oriented sound reinforcement: the SUB 18-AX provides the foundation that gives a professional PA system weight and authority.

The integrated 2200-watt Class D power amplifier module provides 1100 watts of RMS power and enables high sound pressure reserves with clean signal reproduction. An advanced limiter protects the system while preserving the sound quality of the input signal. Cooling is convection-based, which means that the subwoofer operates without any annoying fan noise. This is a pleasant practical advantage, especially at events with quiet passages, speech or acoustic music.

A central highlight is the comprehensive digital signal processing. The RCF SUB 18-AX active 18" PA subwoofer has recallable crossover presets for RCF loudspeakers, a fully parametric 8-band EQ, delay settings up to 45 meters, routing functions, snapshots and options for directional bass dispersion. This allows the system to be adapted precisely to the room, stage, speaker placement and musical requirements. Top/sub tuning can be conveniently carried out in meters, feet or milliseconds.

The 2.4-inch color touch panel with rotary encoder and push button enables quick operation directly on the device. Swiping movements make it easier to navigate through the menus, while parameters such as presets, EQ, delay or routing remain clearly accessible. Compatibility with the RCF LiveRemote app is particularly practical for modern live performances. Musicians, DJs or technicians can make settings conveniently via smartphone or tablet using Bluetooth. This allows the bass range to be precisely controlled during the sound check or from the audience position.

Two XLR/jack combo inputs, link outputs and two XLR crossover outputs are available for connection. This allows the subwoofer to be flexibly integrated into stereo, mono, 2.1 or 2.2 setups. By combining two subwoofers, suitable configurations for larger systems can be realized. The input sensitivity of -2 dBu or +4 dBu offers scope for different signal sources, mixing consoles and controllers.

Another technical feature is the Bass Motion Control. This technology replaces the classic high-pass filter with an intelligent algorithm that analyzes the dynamic behaviour of the woofer and specifically limits excessive excursions. The advantage is an extended, linear bass response without unnecessary interference in the phase behavior. This means that the bass range remains controlled, deep and musical, while the driver is reliably protected.

FiRPHASE technology supports a linear phase response down to the low frequencies of the subwoofer. Especially when combined with matching RCF tops, this results in a more precise transfer between the subwoofer and the main speakers. As a result, the sound is more closed, more impulsive and more natural. This tuning is a great advantage for professional users because they need less time for corrections and can achieve a balanced overall sound more quickly.

The dimensions also show that the RCF SUB 18-AX active 18" PA subwoofer was designed for mobile applications. With a height of 693 mm, a width of 505 mm, a depth of 685 mm and a weight of 42.9 kg, the subwoofer remains portable, but still offers the performance of a professional 18-inch system. The M20 thread on the top allows the direct attachment of a distance rod for tops. The robust plywood construction, the polyurea coating and the sturdy steel grille reliably protect the speaker in everyday use.

Recommended purchase

The RCF SUB 18-AX active 18" PA subwoofer is a very good choice if you are looking for a professional bass system that combines high performance, intelligent control and robust construction. Users who already use RCF loudspeakers in particular will benefit from the coordinated crossover presets and quick integration into existing systems. However, the subwoofer also impresses as a powerful extension to other PA setups thanks to its flexible connection section, comprehensive signal processing and precise sound.

For DJs, the SUB 18-AX provides the necessary low bass pressure so that beats, basslines and kick drums are not only clearly defined, but can also be physically experienced. For live bands, it provides the foundation for bass drums, electric bass, synthesizers and electronic elements. For event technicians, the combination of app control, touchscreen, snapshots, delay and cardioid function is particularly attractive because it enables quick adaptation to different rooms and setups.

The central speaker management in the subwoofer is a strong selling point. Instead of having to use external controllers or complicated additional devices, important settings can be made directly on the SUB 18-AX. This saves set-up time, reduces sources of error and ensures reproducible results. Eight recallable snapshots help to quickly load recurring setups, for example for different event sizes, top combinations or room configurations.

The RCF SUB 18-AX active 18" PA subwoofer also impresses in terms of durability. The weatherproof connection concept with powerCON TRUE1 TOP, the stable polyurea coating and the practical handles make it a reliable companion for everyday professional use. Anyone who frequently sets up and dismantles, transports material or provides sound at changing locations will quickly appreciate the robust design and easy handling.

This subwoofer is recommended for anyone who needs more than just additional bass power. The SUB 18-AX is a modern, active sound reinforcement tool with a high power reserve, well thought-out operating concept and professional system integration. It is suitable for mobile DJs, bands, event service providers, event venues, clubs, schools, churches, cultural centers and rental companies that value powerful sound, controlled bass reproduction and simple operation.

Features:

• Professional active 18-inch PA subwoofer for live sound, DJ applications and mobile sound reinforcement
• 2200 watt Class D power amplifier module with 1100 watt RMS output
• Maximum sound pressure level of up to 135 dB
• 18-inch woofer with 4-inch voice coil
• Bass reflex enclosure for deep, powerful and controlled bass reproduction
• Frequency response from 35 Hz to 120 Hz
• Digital crossover with presets for RCF speakers
• FiRPHASE technology for optimized phase response
• Bass Motion Control for intelligent control of woofer excursion
• 2.4-inch color touchscreen with rotary encoder and push function
• Swipe gestures for quick navigation through the user interface
• Fully parametric 8-band EQ for precise system tuning
• Delay setting up to 45 meters
• Eight recallable snapshots for recurring setups
• Cardioid function for directional bass radiation
• L/R balance for 2.1 systems
• Compatible with the RCF LiveRemote app for iOS and Android
• Bluetooth remote control for convenient setup and adjustment
• Two XLR/jack combo inputs
• Link outputs and two XLR crossover outputs
• Multiplex hardwood housing with robust polyurea coating
• powerCON TRUE1 TOP mains connection for demanding operating conditions
• M20 high stand flange for combination with tops
• Ergonomic side handles for easier transportation
• Sturdy steel front grille with internal acoustic foam
• Dimensions: 693 x 505 x 685 mm
• Weight: 42.9 kg
• Available in black and white

Specs:

• Power: 1100 W
• Housing Material: Wood
• Pole Mount: yes
• Woofer: 1 x 18
• Set Offer: no
• Type: Subwoofer
• Theme: PA and Sonication

Instruction manual / Safety instructions:

• Manual (3.85 MB)

Further links:

• Print View