Allen&Heath GL4800 USER GUIDE - Manual (Page 15)

GL4800 User Guide 15
Sys-Link V2 Expander Option
Available as a kit to be fitted to the console to expand the busses. Uses 2 37-pin
D-type connectors (input A and B). Operates at -2dBu line level. Input option
available only. Refer to your Allen & Heath agent for further details.
Group/Aux/L/R/M Insert Send
Used to send the output signal to external effects and signal processing
equipment such as graphic equalisers, delays and compressors, post-mix amp
and pre-fader.
3-pole 1/4" jack socket (tip = hot).
Impedance balanced -2dBu 50ohm line level.
Group/Aux/L/R/M Insert Return
Used to return the processed signal from external equipment into the output
audio signal path pre-fader and mix meter.
3-pole 1/4" jack socket (tip = hot). Balanced >10kohm -2dBu line level.
Group/Aux/L/R/M Main Output
3-pin male XLR (pin 2 = hot). Electronically balanced 75ohm. +4dBu line level,
+27dBu maximum into 600 ohm load.
Capable of driving long cable runs without loss or interference.
Mode Switching
Set the underpanel mode switches for the intended console operation. Some of
these affect the way the connectors work. For full details please refer to the
BLOCK DIAGRAM.
OUT REV underpanel mode switch - The Aux XLRs and inserts can swap
with the Matrix and LR2 output jacks for aux (effects) sends on jacks if required.
This also provides matrix and LR2 outputs on XLRs with inserts for driving
speaker systems.
MONO MODE underpanel mode switch - The Mono output becomes the
engineers listen wedge monitor feed when the console is operated in on-stage
monitor mode. However, the Mono insert remains with the mono mix.
MIX/AUX REV underpanel mode switch - Note that while the front panel
control sections are swapped when the reverse mode switches are pressed, the
signals always appear at their related connectors, ie. the connectors do not
swap.
MONITOR 1
1
1
GRP
INSERT
RET
SEND
AUX
INSERT
RET
SEND
AUX
GRP
LISTEN WEDGE
SEND
RET
INSERT
SEND
RET
INSERT
SEND
RET
INSERT
SEND
RET
INSERT
M
L R
INSERT
SEND
INSERT
SEND
INSERT
SEND
INSERT
SEND
RET
INSERT
RET
SEND
INSERT
RET
SEND
INSERT
RET
SEND
INSERT
RET
SEND