Allen&Heath AB168 Qu User Manual
AB168
dSNAKE
CH 1-16
Out 1-8
ME-1 /
ME-U
dSNAKE
dSNAKE In 1-16
dSNAKE Out 1-8
AB168
dSNAKE Exp 1-16
dSNAKE Exp Out 1-8
ME-1 /
ME-U
AB168 AudioRack
GLD-80 +
2x AB168
32 inputs, 16
outputs on stage
Qu-16 + AB168
Access all 16
mic inputs on
stage
The AB168 is a portable, rugged audio interface box for the Allen & Heath GLD and Qu digital mixing
systems. It provides 16 remote controlled mic/line preamps and 8 XLR line outputs. It connects to the
mixer over a single Cat5 cable using the Allen & Heath dSNAKE protocol. A second AB168 can be
connected to the AB168 to expand the number of system inputs and outputs.
The AB168 is simply an audio interface. It cannot be used by itself. It must connect to the GLD or Qu
mixer which is where the audio is processed.
The AB168 is not compatible with Allen & Heath iLive Series components or ACE connection.
Refer to the GLD User Guide AP8561 and Qu User Guide AP9372 for instructions on connecting and
using the AB168 with your system. Refer to the Allen & Heath web site for more information and suitable
Cat5 cables.
The AB168 can be operated horizontally with the connectors facing upward
or sideward, or vertically to save space on stage. It can also be mounted in
a 19” equipment rack or case using the optional AB168-RK10 kit.
The diagrams below show two example applications.
Allen & Heath can provide the following CAT5e cables:
AH9650 100m drum of Etherflex cable with Neutrik EtherCon locking connectors.
AH9651 20m Etherflex cable with Neutrik EtherCon locking connectors.
AB168 AP9588 issue 1
AB168 Panel Layout
Input sockets 16 balanced XLR mic/line
inputs with +48V Phantom Power indicator. The
preamps are built into the AB168 and their Gain,
Pad and 48V phantom power are remote
controlled from the mixer via the dSNAKE link.
The outputs of the analogue preamps are
converted to digital format and transported via
dSNAKE to be processed and mixed at the GLD
or Qu mixer.
The sockets are numbered 1-16. On GLD, any
input can be patched to any channel at the
console. On Qu, sockets are mapped one-to-one
to input channels.
The Phantom Power indicator detects voltage at
the socket whether supplied by the AB168 or
received from an external source.
Output sockets 8 balanced XLR outputs
operating at nominal +4dBu line level. Any signal
can be patched to any socket using the GLD I/O
screen or Qu Setup / Output Patch / dSNAKE
menu. The mixer defaults to a logical mapping of
these sockets to get you started.
Space is provided next to the sockets for
custom labelling.
dSNAKE port Cat5 cable link to connect to
the mixer or AR2412 rack. This carries the
inputs, outputs and the monitor sends to and
from the AB168 as well as control for the
preamps and system status. Maximum Cat5
cable length is 120m (396’) depending on cable
type.
We recommend using EtherCon locking
connectors to prevent damage to cables or ports.
EXPANDER port Cat5 cable link to
connect a second AB168 rack to add further
mic/line inputs and XLR line outputs. It can also
be used to connect to the Allen & Heath ME
personal mixing system.
Mains power input IEC connector and
fuse for the built-in universal voltage power
supply unit. This accepts worldwide voltages
from 100 to 240V AC 50/60Hz. Check that you
have received the correct mains lead for your
territory.
Secure the cable in place using the plastic P-clip.
Use a T20 Torx screwdriver to refit the screw.
Vents Ensure good ventilation at the sides
and back of the rack. Avoid obstruction of vents
while operating. Avoid dirt or liquid ingress.
Read the Safety Instructions Sheet and information printed on the panel before operating.
By using this Allen & Heath product and the software within it you agree to be bound by the terms of
the relevant End User Licence Agreement (EULA), a copy of which can be found at: www.allen-
heath.com/legal.
AB168 2 AP9588 issue 1
Copyright © 2014 Allen & Heath Ltd, Kernick Industrial Estate, Penryn, TR10 9LU, UK. All rights reserved.
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