Bedienungsanleitung Allen-Heath GL2800 (Seite 33 von 42) (Englisch)

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GL2800 User Guide 33

Using the Stereo Channels The two full feature stereo

channels and the two dual stereo returns present a unique flexibility.

The channels each include a patchable mic input and a stereo line

input. The returns each include two stereo inputs which can be mixed

together or used separately.

The mic preamp has a TRS jack MIC OUT breakpoint so that its output

can be used independently. Plugging into this socket breaks the

signal path feeding the channel and routes it to the jack instead. ST1

and ST3 stereo inputs can be routed either into the return channels or

directly to the LR mix. This is configured using recessed mode

switches which protect from accidental operation during a show.

The GL2800 provides 6 stereo inputs in a compact format.

Together with the 2 mics the stereos provide for a host of space

saving applications:

Standard Mono Microphone Channels Mono mic input through the

stereo channel with 4band EQ, auxes and full routing.

True Stereo Microphone Channel For example, use short jack

leads to patch both MIC OUT breakpoints into the stereo line input of

one channel. Set the stereo line level control on this channel to its

‘0dB’ position. Adjust the gain and balance between the left and right

microphones using the two mic GAIN controls. The other channel can

be used as a stereo effects return, sound effects or other line source.

Mixing Two Microphones through One Channel Patch one MIC

OUT into the other channel stereo L/M input. On that channel turn up

the mic gain control to add its own mic, and the stereo line level

control to add the patched mic.

Patchable Microphone Preamplifier Plug into the MIC OUT

breakpoint to disconnect the mic preamp from the channel and patch

it elsewhere to be used independently. For example, plug in a room

microphone and patch MIC OUT to a matrix EXT IN to add ambience

to a recording or monitor feed, or use it as a preamplifier for a

reference microphone with an RTA or other analysis equipment. You

could even use it to provide a better mic source to a video camera or

other recorder.

Dual Stereo Line Inputs A trademark of Allen & Heath consoles is

the ability to combine more than one source into a stereo channel,

each with its own level control. This can save channel space when

working with two similar sources routed to the same destination, for

example, two stereo reverb returns, two backing track or sound effects

players, or to alternate between walk-in music and recorded

announcement players. The two stereo return channels provide this

facility.

Using the Mute Groups The 4 mute groups let you

simultaneously mute combinations of input channels with a single key

press. For example, use a group to mute all the drum channels, or all

stage mics in a musical production. You could also assign a group to

mute all channels during the intermission. You could even use the

groups to recall the correct channel settings for different bands or

scenes during a theatre show.

Finally… A Note about Combining Signals You can use a

‘Y’ splitter cable or adapter to feed one output to two destinations, but

never try to combine two outputs to one destination. This may

damage or degrade the performance of the equipment driver stage.

STEREO LINE IN

L/M

MIC OUT

(BREAKPOINT)

STEREO LINE IN

L/M

MIC IN

MIC OUT

(BREAKPOINT)

MIC IN

ST1 INST2 INST3 INST4 IN

L/M

L/M L/M L/M

MUTE GROUPS

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Allen-Heath GL2800 Seite 33

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