Overview

The X-540 speakers use FDD2 (Frequency Directed Dual Driver) technology to produce a uniform soundfield anywhere in the room.  Immerse yourself in the game using the selectable 'matrix mode,' which automatically creates 5.1 surround sound from common 2-channel stereo sources.  The compact satellites are wall-mountable, and and a special clip lets you place the centre channel speaker on top of most flat-panel monitors to reduce desktop clutter. Use the wired control centre to control volume and bass levels or connect headphones to enjoy your games and music privately.  
Features:
Frequency Directed Dual Driver technology
FDD2 eliminates uneven response created by conventional dual-driver designs.
Matrix mode
Creates 5.1 surround-sound effect from 2-channel stereo sources.
Innovative centre channel LCD clip
Speaker attaches to the top of most flat-panel monitors.
Satellite speaker stands
Rotate for easy wall-mounting and positioning.
Dynamic, real-time bass equalisation
Maximises low-frequency response at all volumes.
High-excursion, ported, down-firing subwoofer
Displaces more air for deeper bass. 
Specifications:
Total RMS power: 70 watts RMS
Satellites: 45 watts RMS (2 x 7.4W front, 15.4W centre, 2 x 7.4W rear)
Subwoofer: 25 watts RMS
Total peak power: 140 watts
Frequency response: 40 Hz - 20 kHz
Drivers:
Satellites: (2) 2" drivers per satellite
Subwoofer: 5.25" ported driver
Speaker dimensions (H x W x D)
Satellites: 8.4" x 3.2" x 5"
Centre channel: 7.8" x 4.75" x 3.75"
Subwoofer: 11.25" x 6.5" x 9.75"