The SUB 705-AS II is a compact and powerful bass reflex subwoofer. It is equipped with a 15” high power woofer with 3” voice coil, powered by a 1400 Watt digital amplifier in a robust plywood housing with deep and punchy tuning for a powerful bass. Thanks to the built-in digital stereo crossover (DSP) with adjustable crossover frequency, it can be easily and quickly set up with a satellite speaker. The SUB 705-AS II easily combines with 12” and 15”, ideal for RCF ART and D-Line Series.

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  • 1400 Watt Digital Amplifier
  • 15″ Woofer, bass reflex housing
  • Stereo crossover
  • Switchable crossover frequencies
  • Phase-reverse switch
  • Electronic equalization, soft limiter and protection
  • Stereo XLR input, Stereo XLR signal output
Acoustical Specifications
  • Frequency Response -3 dB: 40 Hz ÷ 120 Hz
  • Max SPL: 131 dB
  • Woofer: 15″, 3.0″ v.c.
Input/Output Section
  • Input connectors: Stereo XLR
  • Output connectors: Stereo XLR
  • Input sensitivity: -2 dBu / + 4 dBu
Processor Section
  • Crossover frequencies: 80-110 Hz Hz
  • Protections: thermal, rms
  • Limiter: soft limiter
  • Controls: Volume, EQ, phase, xover
Amplifier Specifications
  • Total power: 1400 W PEAK
  •    Low frequencies: 1400 W PEAK
  • Total power: 700 W RMS
  •    Low frequencies: 700 W RMS
  • Cooling: convection
  • Connections: VDE connector
  • Cabinet Material: Baltic birch plywood
  • Hardware: Pole mount
  • Handles: 2 side
  • Pole Mount/Cap: yes
  • Grille: Steel
  • Colour: Black
Physical Specifications
  • Height: 568/22.36 mm/inch
  • Width: 430/16.93 mm/inch
  • Depth: 595/23.43 mm/inch
  • Net Weight: 28.0/50.70 kg/lbs


SPL – high power output

Superior and incredible SPL levels guaranteed also in open air and at long distance.

Integrated DSP

The built-in digital stereo crossover with adjustable crossover frequency allows SUB 705-AS II to be easily and quickly set up as a sub-satellite speaker system.

Compatible with RCF professional speakers

The SUB 705-AS II is designed to integrate seamlessly into RCF professional speakers. The bass reflex design guarantees a deep, linear power response while the 3’’ voice coil design woofer offers the minimum of power compression. SUB 705-AS II is the perfect match for 10”, 12” or 15” satellite speakers. It is also the ideal companion subwoofer for the RCF ART 3, ART 7 or D-Line Series.

Deep bass sound

Two selectable equalisations to experience the extremely deep response and precise low frequency control.

Stereo female XLR inputs (bal/unbal).


silicon surround structure

double nomex layer

Link/Xover out switch

The output link is flat when the switch is OFF (the output signal is the same as the input signal), or is high passed when the switch is ON (to connect a satellite speaker).

double nomex layer

Xover switch

This switch sets the crossover frequency of the output at 80 Hz or 120 Hz.

Phase switch

This switch reverses the phase of the output signal.

double nomex layer

Volume control

It adjusts the amplifier volume.

silicon surround structure


3 status LEDs – Power / Signal / Status are provided for monitoring the system.

silicon surround structure

IEC AC sockets

The IEC AC socket provides IN-OUT connections for the power cable to the socket and additional power link.

silicon surround structure

Power main switch

The power switch turns the AC power ON and OFF.