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RCF SUB 905-AS II 15-inch Active Subwoofer

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Quick Overview

The RCF SUB 905-AS II is a subwoofer fitted with a 2200w digital amplifier and an outstanding digital signal processor.

RCF SUB 905-AS II Left


The RCF SUB 905-AS II is an active subwoofer that is fitted with a 15-inch woofer and a next generation 2200w digital amplifier that provides an extremely high output, incredibly low distortion and a very clear natural sound. The 905-AS II makes an ideal addition to any 12/15-inch satellite speaker system and is perfect for the RCF D-Line, Art 7 or 4PRO range of speakers.

On the rear of the subwoofer lies an innovative input board that gives you stereo XLR inputs as well as XLR link-crossover outputs alongside a crossover frequency switch that can be changed from 80Hz to 120Hz. This subwoofer features an integrated DSP with a range of presets to choose from so it can quickly adapt to the RCF satellite speaker you match it with. The 2200w amplifier comes with a robust mechanical construction that is made of aluminium and helps stabilize itself during transit and dissipates heat without the need for a fan.

The 905-AS II features an input sensitivity encoder control that allows you to set the signal level that is being inputted to the sub; the encoder ranges from a gain reduction of +99dB all the way to 0dB gain reduction. Alongside this is a XOVER preset section, the XOVER gives you a selection of 24dB/octave high and low pass filters so you can get the exact sound you want from your PA system.

The SUB 905-AS II subwoofer is made of robust birch plywood and is coated in a textured heavy-duty epoxy; the sub also uses a bass-reflex design that helps produce an extremely high sound pressure level while also drastically reducing distortion.

RCF SUB 708-AS II Key Features:

  • 2000 Watt Peak, 1000 Watt RMS digital amplifier
  • 131 dB max spl
  • 15" woofer, high power 3" copper coil
  • Xover 80-120 Hz switch, phase switch
  • Mono / Stereo combo xlr / jack input PFC power factor correction


  • Live sound reinforcement
  • Portable and installed audio-visual systems
  • Live theatre and houses of worship
  • Auditoriums, retail, ballrooms and night clubs

RCF SUB 708-AS II Technical Specifications:

  • Frequency Response: 40 Hz ÷ 120 Hz
  • Max SPL: 131 dB
  • Woofer: 15", 3" v.c.


  • Input signal: bal / unbal
  • Input connectors: Stereo combo xlr-jak
  • Output connectors: Stereo xlr
  • Input sensitivity: -2 dBu / +4 dBu


  • Crossover frequencies: 80 - 120 Hz
  • Protections: Thermal, rms
  • Limiter: Limiter
  • Controls: Volume, phase, xover

Amplifier Specifications:

  • Total power: 2000 W PEAK
  • Low frequencies: 2000 W PEAK
  • Total power: 1000 W RMS
  • Low frequencies: 1000 W RMS
  • Cooling: Convection / forced
  • Connections: VDE connector in / out


  • Cabinet Material: Balitc birch
  • Handles: 2 on side
  • Pole Mount/Cap: Yes
  • Colour: Black


  • Height: 600mm  
  • Width: 445mm
  • Depth: 600mm
  • Net Weight: 31.8kg

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RCF SUB 905-AS II 15-inch Active Subwoofer