ALLEN & HEATH GLD Digital Audio Mixing System User's Guide download pdf (Page 20)

GLD Touch Screen Reference V1.2 – Issue 1 20 ALLEN&HEATH

Chaining FX - FX devices can be routed to each other. For

example you could patch the output of a Delay unit into a

Reverb, and then return the reverb to the main mix.

View Outputs – Touch the View Outputs button to open a

window showing where the outputs of the FX device are

routed. Each slot can handle up to 8 outputs depending on

the device loaded. Most provide 2 outputs (stereo).

Unassign – Touch this button to reset the FX device

outputs to feed its related short FX Return channel.

5.3 FX Libraries

Touch the Library button to open the Library window. Touch

the Exit Library button to close the window.

The Libraries are grouped according to FX type. You can

choose to load one of many 'Factory' presets from the

menus, or to recall a previously stored 'User' preset from

the memory or directly from your USB key.

Factory, User/USB – Touch to show the available Factory

presets or to show the User presets currently stored in GLD

memory and those found on a USB key plugged in.

Recall – Scroll through the list and touch to select a preset.

Touch Recall to load the highlighted preset.

Store New – Touch to store the current FX settings as a

User preset. Name the preset using the touch keypad.

Overwrite - To update an existing User preset first select it

in the list then touch the Overwrite button. Factory presets

cannot be overwritten or deleted.

User Libraries can be deleted or transferred to or from your

USB key using the Setup / Memory / Library Manager

page.

Note You do not need to use up FX slots to attach Graphic

Equalisers to the mixes. Each of the 20 mix outputs has a

GEQ available within its processing screen.

5.4 FX Devices available

SMR Reverb

SMR Live is a Spatial Modelling Reverberator featuring 4

fully configurable complex spatial models Classic, Hall,

Room and EMT. Each of these models use different

reflection and decay algorithms to provide natural sound

spaces ideal for Live sound.

Classic Emulates high quality plates. Shape tailors the

reflection pattern. Min position for fast attack, mid position

for rounded early reflections, and max position for

separated early and late reflection patterns. Adjusting

shape/size/predelay with decay can result in some great

Hall reverbs. Small size settings not very useful in live

sound applications.

Hall Emulates a real Hall reflection model. No shape

control, reflections are controlled with Size, Source diffusion

and Ref detail with rich deep decay spectrum.

Room Accurately emulates a characteristic complex room

reflection pattern.

EMT Classic plate emulation. A great plate with good tonal

balance for live use. Decay setting around 2 seconds is

typical.

The SMR primary controls essential for live mixing are

always visible:

LF Cut - 0 to 400Hz, 24dB/octave high pass filter to cut low

frequencies of the input signal to the reverb.

HF Cut - 2kHz to 20kHz, 24dB/octave low pass filter to cut

high frequencies of the input signal to the reverb.

Predelay - The time it takes before the reverb reflections

and decay are heard.

Decay Time - Broad spectrum decay control. The time it

takes for the reflections to decay to 60dB below the level of

the direct sound is known as the RT60, an important

measurement of reverb in a room.

HF Decay - Frequency at which the high frequency decay

attenuation starts.

HF Slope - The attenuation slope of the high frequency

decay. HF Decay and Slope are both essential for high

frequency decay spectrum adjustment in a live space.

Setting HF Decay and Slope low creates a natural sounding

decay. Setting HF Decay and Slope high creates a dramatic

decay.

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ALLEN & HEATH GLD Digital Audio Mixing System User's Guide Page 20

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