RCF Sub 8003-AS MKIII

RCF Sub 8003 MKIII – 18 inch Active Subwoofer – The best in it’s class!

This Subwoofer is a high-performance active subwoofer that delivers deep, punchy bass in a compact enclosure. Powered by a 2200W Class-D amplifier and loaded with a robust 18″ woofer, it produces tight low-end response down to 35Hz with a maximum SPL of 135dB. Its advanced DSP includes selectable crossover presets, cardioid configurations, and system protection, making it ideal for both portable PA setups and fixed installations. Built with a durable Baltic birch cabinet and equipped with sturdy handles and pole mount, the RCF SUB 8003-AS MK3 combines power, clarity, and reliability for professional sound reinforcement.

RCF Sub 8003 Attributes

Acoustical Specifications

• Frequency Response: 35 Hz – 120 Hz

• Maximum SPL (at 1 m): 135 dB Transducer

• Woofer: 18″ with a 4.0″ voice coil (ceramic magnets

Amplifier & Power

• Peak Power Output: 2200 W (Class-D)

• DSP & Controls

• Built-in internal DSP with Bass Motion Control for enhanced low-frequency linearity

• Rear panel controls include:

  • Selectable gain, crossover frequency, phase/polarity, cardioid mode, and time delay

  • Protections: Thermal, RMS; plus a soft limiter

I/O & Connectivity

• Inputs: Balanced/unbalanced via stereo XLRs

• Outputs: Stereo XLR signal through outputs (link)

• Power: Powercon IN/OUT

Physical & Construction Details

• Cabinet: Multi-ply hardwood (plywood) with rugged coating; tour-ready stackable design

• Pole Mounts: M20 threaded receptacle on top and side for versatile deployment

• Grille: Steel with acoustically transparent foam backing to protect transducer

Dimensions & Weight

• Height: 693 mm (27.28 in)

• Width: 505 mm (19.88 in)

• Depth: 685 mm (26.97 in)

• Weight: 43.2 kg