The SUB 18-AX is a professional 18″ active subwoofer designed for high-output live sound environments. Delivering up to 135 dB SPL through a powerful 2200W Class-D amplifier, it ensures exceptional headroom and low-end performance. Featuring advanced DSP with an 8-band parametric EQ, delay settings, cardioid configuration, and recallable presets, it allows for complete system control through its onboard touchscreen or via the RCF LiveRemote app over Bluetooth®. Its rugged all-wood cabinet, coated in durable polyurea, makes it ideal for mobile setups in small to mid-sized venues. Built-in crossover outputs allow seamless integration with 10″, 12″, or 15″ tops, while Powercon TRUE1 TOP connectors and ergonomic handles ensure road-ready reliability.
Features
2200 Watt Class-D amplifier
135 dB max SPL
18” woofer in bass reflex housing
Digital crossover with presets
8-band parametric EQ with delay and cardioid configuration
2.4-inch color touchscreen with rotary encoder
Bluetooth® control via LiveRemote app
Dual XLR/TRS combo inputs, XLR Link, and XLR Xover outputs
Powercon TRUE1 TOP AC connector
Multi-ply hardwood cabinet with polyurea coating
M20 pole mount and ergonomic side handles
Specifications
| Frequency Response | 35 Hz – 120 Hz |
| Max SPL @ 1m | 135 dB |
| Woofer | 1 x 18″, 4.0″ voice coil |
| Input Signal | Balanced/Unbalanced |
| Input Connectors | Combo XLR/Jack |
| Output Connectors | XLR |
| Input Sensitivity | -2 dBu / +4 dBu |
| Protections | Thermal |
| Limiter | Soft Limiter |
| Controls | Volume encoder, touchscreen monitor |
| Total Power | 2200 W Peak, 1100 W RMS |
| Cooling | Convection |
| Power Connections | Powercon TRUE1 TOP IN/OUT |
| Cabinet Material | Plywood |
| Handles | 1 handle per side |
| Pole Mount | M20 thread |
| Grille | Steel |
| Color Options | Black, White |
| Height | 693 mm / 27.28 in |
| Width | 505 mm / 19.88 in |
| Depth | 685 mm / 26.97 in |
| Weight | 43.8 kg / 96.56 lbs |
| Package Height | 735 mm / 28.94 in |
| Package Width | 745 mm / 29.33 in |
| Package Depth | 565 mm / 22.24 in |
| Package Weight | 49.5 kg / 109.13 lbs |




















Reviews
There are no reviews yet.