ALLEN & HEATH GL 2000 User's Guide download pdf (Page 18)

18 GL2400 User Guide

The STEREO Input Channel

Each GL2400 stereo channel features a mono microphone preamp

as well as two stereo line inputs. These three sources can be used

independently or mixed together into the channel, so providing a

unique flexibility. For example, you could configure a conventional

mono microphone channel with the two ‘short return’ stereos routed

direct to LR for effects. Alternatively you could patch the mic stage as

an independent preamp for an ambience microphone feeding a

recording, or for a system calibration microphone, while the ST line

inputs mix two external stereo effects processor returns or sound

effects players via a single channel. This can be useful in saving

channels, letting you mix many inputs in a small space. Of course,

one stereo could feed the channel, the other route direct to LR. Two

stereo channels could be linked so that the mic preamps cross patch

to provide one stereo mic and one stereo line channel, with two ‘short

returns’ also available… See ‘Operating Tips’ later in this guide.

MIC INPUT Similar to the mono channel microphone preamplifier

without the line (pad) and polarity switches. Gain and 48V phantom

power switching are included. A rear panel MIC OUT breakpoint

socket is provided so that the mic stage can be used independently.

Plugging a jack into the MIC OUT socket breaks its signal path to the

stereo channel.

DUAL STEREO LINE INPUTS

Each stereo channel has two

stereo inputs which can be used separately, mixed together or split so

that one feeds the channel, the other routes direct to LR. ST1 and 2

feed channel 15 (23), ST3 and 4 feed channel 16 (24). The L input

signal is normalled through the R input socket so that a mono source

may be plugged in to feed both left and right sides of the stereo

channel. Each input has its own level control to adjust from fully off to

+16dB gain. Centre position is unity (0dB) gain.

Routing mode switch Recessed to prevent accidental

operation. In the normal up position the ST signal mixes into the

associated stereo channel. When pressed the signal is routed direct

to the LR mix instead of the channel.

EQ Similar to the mono channel, but the two peak/dip mid bands

are fixed at 250Hz and 2.5kHz centre frequencies.

AUX SENDS These work as described for the mono channel, but

the L and R sides of the stereo signal sum together to feed each aux in

mono. This can be changed using an internal jumper so that L feeds

the odd numbered auxes and R feeds even. The auxes can be

switched pre or post-fader but are always sourced post-EQ.

BAL Balances the level of the L signal against the R signal to

compensate for differences in the source, or to position the signal

within the stereo image.

MUTE When pressed, all the channel pre and post-fade signals are

turned off except the MIC OUT and any stereo routed direct to LR.

PFL Press PFL to display the summed L+R pre-fade channel signal

on the monitor meters and listen to it in the headphones and local

monitor without affecting the main outputs.

METER As the mono channel, but the left and right signals are

summed to display in mono.

ROUTING As the mono channel, but routes the left signal to L and

odd groups, right signal to R and even groups.

FADER The stereo fader provides +10dB maximum boost above

its normal unity gain 0dB position

PRE

AUX

OO +6

POST

OO +6

AUX

MUTE

+6OO

PRE

POST

OO +6

EQ IN

-15

+15

GAIN

+48V

MIC

ST4

STEREO

ST3

STEREO

CH16

12k

80Hz

2k5

250Hz

ODD

BAL

EVEN

-5

-10

-20

-5

-10

-20

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 39 40

Comments to this Manuals

No comments

ALLEN & HEATH GL 2000 User's Guide Page 18

Comments to this Manuals

Related products and manuals for Audio mixers ALLEN & HEATH GL 2000