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RCF SUB 905-AS II 1100W 15" Bass Reflex Active Sub


The RCF SUB 905-AS II 1100W 15" Active Subwoofer delivers a deep and powerful bottom end, handling all the necessary lows needed for a portable, modern sound system.

Small Size, High Power:

Its 15” speaker is contained within a compact enclosure, and the SUB 905-AS II has enough power for a number of live applications. Its 15-inch speaker is driven by a powerful 2200W digital amplifier, ensuring that you get a clear and detailed low-end at any venue.

The “Bass Reflex” enclosure provides incredibly high SPL to reduce distortion at high volumes, so you can be sure to get excellent clarity with this subwoofer.

Solid Construction:

The SUB 905-AS II has a Baltic birch plywood enclosure, and its solid construction ensures that the speaker can survive gig after gig.

Its moderate weight makes transportation easy, but no strength is sacrificed thanks to its high-quality build. Ergonomically placed recessed side handles make moving the speaker easy, and keeps it looking sleek and well-designed.

Here's what RCF say about the SUB 905-AS II 1100W 15" Bass Reflex Active Sub:

The SUB 905-AS II active subwoofer is ideal for building powerful subwoofer satellite systems where compactness and high sound levels are required at the same time. The SUB 905-AS has the most advanced RCF woofer technology,
coupled with a powerful 2200 W digital amplifier. It offers the perfect blend of bass reproduction, high SPL and compact dimensions for mobile use by bands or DJs.

The SUB 8003-AS II and SUB 905-AS II are equipped with a new generation of 2200 Watt Digital Amplifier offering very high output, extremely low distortion and incredibly natural sound. The amplifier features a solid mechanical aluminum structure that not only stabilizes the amplifier during transportation, but also assists in heat dissipation.

The input board offers stereo XLR inputs and stereo XLR link-crossover outputs with switchable crossover frequencies for satellite systems. The system has a built-in DSP with selectable presets for perfect and easy adaptation to RCF’s active 2-way speakers. It is ideal for 12” or 15” active speakers in the Live Sound Series such as ART 7, 4PRO and D-Line Series.

The system accept female XLR input connectors and line-level signals from a mixing console or other signal source.

INPUT SENSITIVITY - Controls the overall signal level at the input to the power amplifier. The control ranges from + 99 Db gain reduction (maximum attenuation) to the 0 dB gain reduction (maximum input gain).
XOVER PRESETS - Provides 24 dB/octave low-pass and high pass filters. There are two possible high pass choices (30 Hz or 40 Hz) and four low pass choices (60 Hz, 80 Hz, 100 Hz, 125 Hz) for eight preset combinations. Cardioid presets are available for all 30 Hz high pass presets.
TIME DELAY - The encoder provides a time delay setting expressed in meters.

Pressing this button, the two XLR out become XOVER out.

Using the rear encoder it is possible to select two groups of low pass filter presets, one with 30 Hz high pass and one with 40 Hz high pass, selecting the cutoff frequency best suited to the speaker satellite specific model (60 Hz – 80 Hz – 100 Hz – 125 Hz).

It is possible to create subwoofer cardioid systems using groups of two or three modules.

Both SUB 8003-AS II and SUB 905-AS II are equipped with high power RCF woofers. Our inside/outside voice coils represent unmatchable reference in power handling. Their “triple thickness” former transfers the sound to the cone with extreme accuracy and reliability.

The SUB Series features a bass-reflex design that produces extremely high SPL by drastically reducing the distortion.



  • 2200 W
  • 133 dB max SPL
  • 40 Hz - 120 Hz frequency response
  • 15" Woofer, 3.0" v.c.
  • Selectable gain, X-over and delay
  • Birch tour grade cabinet
  • Stereo XLR input, Stereo XLR signal output


  • Frequency Response -3 dB: 40 Hz ÷ 120 Hz
  • Max SPL: 133 dB
  • Woofer: 15", 3.0" voice coil


  • Input connectors: Stereo XLR
  • Output connectors: Stereo XLR
  • Input sensitivity: -2 dBu / + 4 dBu


  • Crossover frequencies: Selectable Hz
  • Protections: thermal, rms
  • Limiter: soft limiter
  • Controls: Gain,EQ, phase, xover, delay, cardioid


  • Total power: 2200 W PEAK
  • Low frequencies: 2200 W PEAK
  • Total power: 1100 W RMS
  • Low frequencies: 1100 W RMS
  • Cooling: convection
  • Connections: Powercon in-out


  • Cabinet Material: Baltic birch plywood
  • Handles: 2 side
  • Pole Mount/Cap: Yes
  • Grille: steel
  • Colour: Black


  • Height: 600/23.62 mm/inch
  • Width: 445/17.52 mm/inch
  • Depth: 610/24.02 mm/inch
  • Net Weight: 31/68.34 kg/lbs
Inc. VAT


More stock due on Friday, 31 December 2021  

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