Description
RCF SUB 15-AX – 15" Bass Reflex Active Subwoofer, 1100Wrms, 2200Wpeak, BT control, Touch color display, speaker presets
The RCF SUB 15-AX is a professional audio product from the RCF Sub Live series, designed for portable applications. Built to RCF's exacting standards of Italian engineering excellence, this product delivers reliable, high-performance audio in professional environments.
Product Details
- Model: SUB 15-AX
- Series: Sub Live
- Application: PORTABLE
- SKU: 13000835
Description
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.
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.



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.
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.
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 |








