RCF SUB 18-AX Professional Powered 18" Subwoofer (Black)

At a Glance

• 2200W Class-D amplifier
• 135 dB max SPL
• 18� woofer, bass-reflex housing
• Digital crossover with presets
• Multi-ply hardwood polyurea-coated
• LiveRemote app
• Dual combo XLR-1/4" combo inputs + link, dual-XLR crossover output
• Bass motion-control excursion management
• PowerCON True1 TOP, sealed AC connector

Crossover Presets

• The key to optimizing your sound system is the precise adjustment of your subwoofer's time alignment. This not only elevates sound quality but also enhances bass response, giving your audience both a beat they can hear and a vibe they can feel.
• With internal factory-tuned crossover presets for RCF speakers, your sound system is show-ready in a few easy steps. Simply connect your satellite speakers to the SUB AX, select the crossover preset from the user interface, and you are ready to go. FiRPHASE linear phase is extended to match the subwoofer phase down to the lowest frequencies.

Notable Features

Large Touch Display

• 2.4" color touch panel
• Rotary push encoder
• Swipe gestures for fast navigation

Advanced DSP for Your System

• Eight recallable snapshots
• Full-range parametric 8-band EQ
• Up to 45 meters of delay

Precision Tuning

• Top/sub alignment (meters/feet/ms)
• Cardioid function and L/R balance for 2.1 systems

LiveRemote App

Whether you're a musician, DJ, or pro sound engineer, the RCF LiveRemote App (the same app that is used with the ART 9 AX) is now available with the SUB AX models. On the sub's crossover preset selection, system EQ, delay adjustments, and crossover individual settings are quickly accessible. When two subwoofer models are paired, they can be set up for 2.2 operation. LiveRemote App is available for Android and iOS phones and tablets.

Gig-Ready Solution

RCF cabinets are made of high-quality multi-ply hardwood coated with a rugged black (or white) polyurea finish. Subs are stackable and lightweight, have ergonomic handles with rubber grips, and are designed for easy setup and teardown. The M20 threaded pole mount on the top of the cabinet supports RCF speakers of various sizes. The powder coated front grille integrates a special transparent foam backing on the inside to further protect transducers from dust. SUB AX Series subwoofers are built to last, with powerCON TRUE1 TOP mains connectors, so you can be sure that they will stand up to the rigors of use and transport.

Industry-Leading Subs

Lightweight and powerful, RCF woofers are a reference in high performance. RCF Precision Transducers engineers have developed new specific magnet sizes and molds to optimize magnetic flux while maintaining a low weight. The magnetic circuit topology is capable of delivering the highest balanced level of performance in three specific areas: maintenance of a consistent, high-integrity magnetic flux gap, exceptionally low distortion and efficiently integrating the magnetic circuit in a minimum weight design. The T-pole design optimization generates the minimum amount of flux modulation in the magnetic assembly during typical voice-coil movement within the gap.

Drive the Rhythm of the Beat

With 2200W of power, RCF's Class-D amplifier can manage extreme sound-pressure levels with an ultrafast attack, realistic transient response, and very low thermal loss. The stereo input circuit features a low-distortion design with an advanced safety limiter, maintaining the true character of the input signal at all levels. RCF amplifiers are designed according to EN62368-1 for maximum safety and present a switched-mode power-supply section combining high efficiency with minimum weight.

Bass Motion Control

• When searching for extended bass with enhanced performance, RCF engineers found a way to remove the high-pass filter, replacing it with a forward-thinking approach. Introducing BMC (Bass Motion Control), the newly advanced woofer excursion-management feature. The speaker equipped with BMC can handle the lowest audible frequencies without affecting woofer stability, with extended linearity and better sound integrity.
• The BMC method works by creating a complete map of the dynamics behavior of the woofer, to generate a custom algorithm that only limits overexcursions. This gives total freedom of signal reproduction to the transducer. When high-pass filters normally protect the woofer motion from becoming destructive but change the phase behavior, the new BMC algorithm breaks conventional rules.

RCF SUB18-AX Specs

Configuration	Active Subwoofer
Enclosure Type	Subwoofer
Total Power Capacity	1100 W RMS 2200 W Peak
HF Driver	No
MF Driver	No
LF Driver	1x 18" / 457.2 mm Inverted Woofer
Wireless Connectivity	Bluetooth
Color	Black

Enclosure Type	Subwoofer
Total Power Capacity	1100 W RMS 2200 W Peak
Amplifier Class	Class-D

HF Driver	No
MF Driver	No
LF Driver	1x 18" / 457.2 mm Inverted Woofer
LF Voice Coil	4" / 101.6 mm

Frequency Response	35 Hz to 120 Hz
Maximum SPL	135 dB
Input Sensitivity	+4 dBu to -2 dB
Protections	RMS, Thermal

Audio I/O	2x Combo XLR-1/4" 3-Pin Female Balanced/Unbalanced Line Input 2x XLR 3-Pin Male Balanced Link Output 2x XLR 3-Pin Male Balanced Line/High-Pass Output
Network I/O	No
USB I/O	No
Wireless Connectivity	Bluetooth
Bluetooth	Yes
Bluetooth Profiles	A2DP
Mobile App Compatible	Yes: Android & iOS App Name: LiveRemote Functionality: Remote Control

EQ	Yes
Parametric EQ	No
Semi-Parametric EQ	No
Dynamic Processing	Soft Limiter
Alignment Delay	Yes
Phase Adjustment	Yes

AC Input Power	100 to 120 VAC, 50 / 60 Hz
AC Power I/O	1x PowerCON TRUE1 Input 1x PowerCON TRUE1 Output

Color	Black
Mounting	1 x 1.4" / 35 mm Pole Socket (Top)
Handles	1x Each Side
Cooling	Convection
Environmental Resistance	No
Construction Material	Plywood, Steel
Certifications	CE
Dimensions	27.3 to 27 x 19.9 x 16.5" / 69.3 to 68.6 x 50.5 x 41.9 cm
Weight	82.9 lb / 37.6 kg

Package Weight	112 lb
Box Dimensions (LxWxH)	29 x 29 x 22.25"