NEW Unison ***Available In Dec 2012***


The Unison coaxial offers high quality musical experience with exceptional value, with its outstanding acoustic clarity and off-axis dispersion.  The combination of Bitumen coated paper composite cone body contribute to an extremely damped driver, enable us to achieve very accurate sound reproduction with very low distortion figure, reduces overshoot and resonances.  Unison is especially designed for clean sound with effortless drive from the power amplifier.  Unison produces music in a controlled and continuous way over the whole audio range.  Like all Moving Air driver, the surround material is made with composite latex rubber making it durable and tough for all weather.

6.5" Unison 2in1 Components

Unison Specifications

Designed & Engineered In Singapore.

Copyright © 2007 by Moving Air. All rights reserved.

6.5” Bitumen Coated CMF + SilkDome Coaxial Driver:


Sensitivity (1W/1m)       : 87dB

Frequency Response     : 55 to 20kHz

Impedance, Znorm       : 4 ohms

DC Resistance, Re        : 3.6 ohms

Voice Coil Diameter     : 25mm

Rated Power (RMS)       : 60W

Magnet Size                 : 70mm (Ferrite)

Drive Range (RMS)        : 20 to 80W

It has been well known for many years in the audio industry that one of the ideal forms for a loudspeaker is the ‘point source’- where all the sound is radiated from the same point in space.  To do this, the drive units (for example, the bass and treble units in a two-way system) need to be mounted so that their acoustic centres are at the same place.  The problem in achieving this was the sheer physical size of the treble unit, which prevented it from fitting in the centre of the bass unit. Various forms of co-axial units emerged where the tweeter was mounted either in front of or behind the acoustic centre of the bass unit but these have significant drawbacks. The key to the invention of Unison was the arrival on the market of a new magnetic material called Neodymium-Iron-Boron, which has ten times the magnetic strength of a conventional ferrite magnet.  This material allowed a high sensitivity treble unit to be made small enough to fit within the voice coil diameter of a typical bass unit and so be placed at the precise point where the acoustic sources are ‘coincident’.  Thus, the birth of the Unison.