The MClass Stereo Imager

The MClass Stereo Imager splits the signal into two frequency bands; “Hi” and “Lo” and allows you to widen or narrow the stereo image of each band. A typical application of the Stereo Imager is to widen the higher frequencies and narrow the lower frequencies. This will make the bass end “tight” whilst “opening up” the higher frequencies.

This is most often used as an insert effect in stereo.

The MClass Stereo Imager does not create stereo from mono input! For the device to work properly it must connected with stereo in/out, and the input signal must contain a stereo audio signal.

Parameters

The following parameters are available:

| Parameter	| Description
X-Over Frequency	This determines the crossover frequency between the Hi and Lo band. Range is 100 Hz - 6 kHz. Frequencies below this will be affected by the Lo Width setting; frequencies above will be affected by the Hi Width setting.
Lo Width	This adjusts the stereo width for the Lo band. Turn anti-clockwise to narrow the stereo width (i.e. to make it more “mono”), and clockwise to widen the stereo image. Center position means no change from original signal. The “Active” LED indicates whether Low Width is activated or not. Note that for the Lo band, it is more common to narrow the stereo image, as the low frequency content in a mix is usually mixed center and can become less defined if widened.
Hi Width	This adjusts the stereo width for the Hi band. Turn anti-clockwise to narrow the stereo width (i.e. to make it more “mono”), and clockwise to widen the stereo image. Center position means no change from original signal. The “Active” LED indicates whether Hi Width is activated or not.
Solo switch	This allows you to listen to the Lo and Hi bands separately, for reference purposes. “Normal” is the standard operating mode.

Connections

Apart from standard L/R inputs and outputs, there are also “Separate” L/R outputs on the back panel. The Separate outputs can either carry the Lo or Hi band output, which is set by the switch beside the outputs. These outputs can be used to apply processing separately to either the Lo or Hi band.

If you set the Solo switch to “Lo” and the Separate output switch to “Hi”, the device will operate as a basic crossover filter, delivering the Lo band signal from the main output and the Hi band signal from the Separate out.