RCF SUB 15-AX – 15" Bass Reflex Active Subwoofer, 1100Wrms, 2200Wpeak, BT control, Touch color display, speaker presets
RCF SUB 15-AX subwoofer is a professional 15-inch active bass reflex subwoofer delivering 1100W RMS and 2200W peak power with Bluetooth control, touch color display, speaker presets, and advanced DSP processing. Designed for live sound, portable PA systems, DJs, rental companies, churches, and professional audio installations, the RCF SUB 15-AX subwoofer provides deep bass, exceptional clarity, and reliable high-performance operation.
Product Details
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Model: SUB 15-AX
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Series: Sub Live
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Application: PORTABLE
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SKU: 13000835
Description
PORTABLE
SUB 15-AX
PROFESSIONAL ACTIVE 15" SUBWOOFER
- 2200 Watt Class-D Amplifier
- 133 dB MAX SPL
- 15” Woofer, bass reflex housing
- Digital Crossover w/ Presets
Features
- 2200 Watt Class-D Amplifier
- 133 dB MAX SPL
- 15” Woofer, bass reflex housing
- Digital Crossover w/ Presets
- Multi-ply hardwood polyurea-coated
- LiveRemote App
- Dual XLR/TRS combo Input + Link, Dual XLR Xover Out
- Bass Motion Control excursion management
- Powercon True1 Top Sealed AC Connector
The SUB 15-AX is a portable 15" high-power active subwoofer for live sound applications with fully featured processing, a color touch panel, and remote control via Bluetooth®. The combination of a latest-generation transducer with a powerful Class-D amplifier delivers sound pressure levels up to 133 dB with exceptional clarity and headroom. SUB AX subwoofers are designed specifically for small to mid-sized venues and ideal for portable applications. SUB 15-AX is the ideal complement for 10" or 12" woofer-size loudspeakers; it centralizes speaker management inside the subwoofer, providing dual crossovers, 8-band EQs, routing, delays, cardioid configurations, and recallable crossover presets. The polyurea-coated all-wood cabinet features a sealed Powercon True1 Top connector.
Part number:
13000832
SUB 15-AX
100-120V, Black, EAN 8024530021849
13000835
SUB 15-AX
220-240V, Black, EAN 8024530021818
13000877
SUB 15-AX W
100-120V, White, EAN 8024530021894
13000878
SUB 15-AX W
220-240V, White, EAN 8024530022044
Advanced Subwoofer with Crossover Presets for RCF Speakers
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 the beat they can hear and the 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.
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 set-up and tear-down. 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-to-sound 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.

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 2,200 Watts of power, our Class-D amplifier can manage extreme sound pressure levels with an ultra-fast 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 Switch Mode Power Supply section combining high efficiency with minimum weight.
When searching for an 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 the woofer stability, with extended linearity and better sound integrity.
The BMC method works by creating a complete map of the dynamic behavior of the woofer, to generate a custom algorithm that only limits over-excursions. 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.
The RCF SUB 15-AX subwoofer is engineered for professional live sound reinforcement where powerful and accurate low-frequency performance is essential. Featuring a high-efficiency Class-D amplifier, Bluetooth control, touch display, factory crossover presets, and Bass Motion Control technology, the RCF SUB 15-AX subwoofer delivers outstanding bass response and reliable performance. Whether paired with RCF speakers for concerts, events, houses of worship, clubs, or portable PA systems, the RCF SUB 15-AX subwoofer offers exceptional sound quality, flexible system integration, and dependable operation.
The RCF SUB 15-AX subwoofer is built for demanding professional audio applications requiring deep, accurate bass and dependable performance. With its powerful 1100W RMS Class-D amplifier, advanced DSP processing, Bluetooth control, touch color display, and factory crossover presets, the RCF SUB 15-AX subwoofer delivers exceptional low-frequency performance for concerts, DJs, houses of worship, rental companies, and portable PA systems. Whether used as a standalone bass solution or paired with RCF loudspeakers, the RCF SUB 15-AX subwoofer ensures outstanding sound quality, high output, and reliable operation in every performance.
Technical Specifications
Professional Powered Subwoofer - 15"
Acoustical Specifications
| Frequency Response |
35 Hz - 120 Hz |
| Max SPL @ 1m |
133 dB |
Transducers
| Woofer |
1 x 15'', 3.0'' v.c |
Input/Output Section
| Input Signal |
Balanced/Unbalanced |
| Input Connectors |
Combo XLR/Jack |
| Output Connectors |
XLR |
| Input Sensitivity |
-2 dBu/+4 dBu |
Processor Section
| Protections |
Thermal |
| Limiter |
Soft Limiter |
| Controls |
Encoder for Volume control and data entry. Touch Screen for parameter management and monitor. |
Power Section
| Total Power |
2200 W Peak, 1100 W RMS |
| Cooling |
Convection |
| Connections |
Powercon TRUE1 TOP IN/OUT |
Standard Compliance
| Safety Agency |
CE compliant |
Physical Specifications
| Cabinet/Case Material |
Plywood |
| Handles |
1 handle per side |
| Pole Mount/Cap |
M20 thread |
| Grille |
Steel |
| Color Options |
Black, White |
Size & Weight
| Height |
590 mm / 23.23 inches |
| Width |
420 mm / 16.54 inches |
| Depth |
590 mm / 23.23 inches |
| Weight |
31.4 kg / 69.23 lbs |
Shipping Information
| Package Height |
640 mm / 25.2 inches |
| Package Width |
650 mm / 25.59 inches |
| Package Depth |
480 mm / 18.9 inches |
| Package Weight |
36.5 kg / 80.47 lbs |