RCF SUB 18AX | 18in - 135 dB | Bluetooth Control & DSP-Driven 2200 W Power Subwoofer

Professional 18" Active Subwoofer for Live Sound Applications

The RCF SUB 18-AX is a high-performance active subwoofer designed to deliver powerful, precise, and extended bass for live sound setups. With a robust 2200W Class-D amplifier and innovative technologies like Bass Motion Control (BMC), this subwoofer ensures exceptional clarity and deep low-frequency reproduction. Its advanced DSP capabilities and compatibility with the RCF LiveRemote App make it ideal for musicians, DJs, and pro sound engineers in small to mid-sized venues.

RCF SUB 18-AX Competitive Differences

• 2200W Class-D Amplifier: High-efficiency amplifier capable of delivering 135 dB SPL with low thermal loss.
• Bass Motion Control (BMC): Advanced woofer excursion management for deep, distortion-free bass performance.
• Digital Crossover: Factory-tuned presets for seamless integration with RCF loudspeakers.
• Color Touch Panel: 2.4-inch display with rotary encoder for intuitive navigation and settings adjustments.
• LiveRemote App: Wireless control over EQ, delay, and crossover settings via Android or iOS devices.
• Durable Polyurea-Coated Cabinet: Rugged multi-ply hardwood construction for on-the-road reliability.
• Powercon TRUE1 Connector: Reliable sealed AC connection for professional use.
• Cardioid Configurations: Optimize subwoofer arrays for specific performance needs.

RCF SUB 18-AX Description

The RCF SUB 18-AX is engineered for superior bass performance and seamless integration with live sound systems. It features an 18-inch woofer in a bass reflex cabinet, delivering frequencies as low as 35 Hz with clarity and impact. The advanced DSP provides eight recallable snapshots, parametric EQ, delay adjustments (up to 45 meters), and crossover presets for optimal system tuning. The 2.4-inch color touch panel and LiveRemote App allow for precise system control, whether you're on stage or at the mixing desk. Designed for portability, the cabinet includes ergonomic handles, a M20 threaded pole mount, and a robust steel grille with sound-transparent foam for added transducer protection.

SUB 18-AX Features

• 2200W Class-D Amplifier (1100W RMS)
• 18-inch woofer with 4.0-inch voice coil
• Bass Motion Control for enhanced bass response
• Factory-tuned digital crossover with RCF presets
• 8-band parametric EQ with eight recallable snapshots
• Up to 45 meters delay with top/sub alignment
• 2.4-inch color touch display with rotary encoder
• LiveRemote App for wireless system adjustments
• Dual XLR/TRS combo inputs and XLR crossover outputs
• Powercon TRUE1 TOP mains connectors
• Multi-ply hardwood cabinet with polyurea coating
• M20 threaded pole mount for secure speaker placement
• Steel grille with sound-transparent foam backing

SUB 18-AX Specifications

• Acoustical Specifications:
  • Frequency Response: 35 Hz – 120 Hz
  • Max SPL: 135 dB
  • Woofer: 18-inch with 4.0-inch voice coil
• 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: Volume control and touch screen for parameter management
• Power Section:
  • Total Power: 2200W peak, 1100W RMS
  • Cooling: Convection
  • Connections: Powercon TRUE1 TOP IN/OUT
• Physical Specifications:
  • Cabinet Material: Multi-ply hardwood
  • Handles: One handle per side
  • Pole Mount: M20 threaded
  • Grille: Steel with sound-transparent foam
  • Color: Black or White
• Dimensions and Weight:
  • Height: 27.28 inches (693 mm)
  • Width: 19.88 inches (505 mm)
  • Depth: 26.97 inches (685 mm)
  • Weight: 96.56 lbs (43.8 kg)
• Shipping Information:
  • Package Height: 28.94 inches (735 mm)
  • Package Width: 29.33 inches (745 mm)
  • Package Depth: 22.24 inches (565 mm)
  • Package Weight: 109.13 lbs (49.5 kg)

What's in the Box

• RCF SUB 18-AX Subwoofer
• Powercon TRUE1 AC Connector
• Quickstart Guide