Graphic EQ

A 28-band 1/3 octave graphic equaliser is provided on each of the 32 mix outputs. It can be adjusted using the touch screen or the surface faders.

For screen control, touch a frequency slider to highlight it. You can drag the slider or use the screen Rotary to adjust it.

GEQ Modes - 4 Graphic EQ models are provided:

Constant-Q - Constant Q (1/3rd octave) graphic EQ. Symmetrical cut/boost with the width of the filter a constant 1/3rd octave for any cut or boost.

Proportional-Q - Accurate Model of an industry standard symmetrical cut/boost proportional-Q Graphic EQ. Accurate Gain Q modelling and band interaction. Provides smooth wide Q for low cut/boost which progressively tightens beyond 1/3rd octave for max boost/cut.

Digi-Q - Gain and Q are optimised to minimise band interaction and to provide a frequency response as close to the slider positions as possible.

Hybrid - A&H have developed the best of both worlds. The boost is proportional-Q for smooth and warm small boost settings. The cut is a variant of constant-Q providing clinical 1/3rd Octave cut and minimal band interaction.

Frequency Curve - The curve above the sliders displays the overall response of the GEQ.  This helps you see the differences in response between the different GEQ modes.

RTA - The RTA displays the response of the PAFL signal under the frequency curve.

GEQ Fader Flip  -  Touch the screen button or press the GEQ Fader Flip key next to the faders. You can access the GEQ instantly while any screen is active by pressing this key while the mix is Selected. Press the key again to toggle through the frequency range (smaller Surfaces) and to return to normal fader mode. The frequency values are shown in the strip display which displays red while in flip mode.

In fader flip mode the extreme right hand strip becomes the master for the mix currently selected. The fader is either the mix master or a channel send to that mix if a channel Mix key is active. This lets you ring out a monitor mix by adjusting the GEQ while raising the vocal channel send on this fader. Selecting the mix PAFL and RTA Peak Band option will let you see the RTA on the strip meters and help you identify frequencies that start to ring.

To reset a frequency band to '0' press its strip Sel key.

In  -  Switch the GEQ in or out of circuit. The settings and frequency curve turn yellow when switched in and grey when switched out.

To reset the GEQ -  Hold down the Reset key and touch the GEQ screen SEL button to reset the GEQ flat.

To Copy the GEQ to another mix -  Hold down the Copy key and touch the GEQ screen SEL button, then hold Paste and press the Sel key of the mix you wish to copy to.

Library  -  You can store and name the current GEQ settings as a preset in the Library. Existing presets can be overwritten with the current settings. User Libraries can be exported and imported via USB key. To do this go to the Utility / Library Manager screen.