Allen & Heath 19 ZED-4 BUS User Guide
STEREO INPUT CHANNEL
2
4
1
ST1 (& ST3) Phono sockets
These are stereo inputs additional to the main stereo channel in-
puts (below). The gain is varied by the ST1 (& ST3) level control
and these inputs can be sent to either the stereo channels or
straight to the L R main bus, depending on the setting of the under-
panel switch. These inputs are unbalanced.
The source for the ST3 input can be switched from the phono
sockets to the USB return signal with the selector switch below the
USB socket
.
1
5
3
2
Stereo Inputs 1 (& 3) Level control
Adjust the level of the stereo inputs 1 & 3 from off (fully attenu-
ated) to maximum where it has 10dB of gain.
3
4
5
ST1 (& 3) Routing selector switch
This switch selects whether the ST1 (or ST3) signal is sent to the L
R bus directly, or the stereo channel below. When it is pressed in,
the ST1 (or ST3) signal sums together with the main stereo inputs
ST2 (or ST4).
ST2 (& ST4) input jack sockets
Standard 1/4” jack sockets for line level stereo signals. Can be used
with a mono input where the L/M input will also connect to the R
input if nothing is plugged in to R.
The Stereo 1 inputs accept unbalanced or balanced signals.
Stereo Input ST2 (& ST4) Level control
Adjusts the level of the ST2 (& ST4) input. The range is from off to
+10dB.
10
-30
-20
-5
0
5
-10
ST1
LEV
OO
10
-30
-20
-5
0
5
-10
OO
To LR
To CH
ST1
IN
R
ST2
L/M
R
ST2
LEV
IN
L
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