User Manual
Allen & Heath     18     XB-14 User Guide 
LR
PAN
=
SIGNAL
PFL
PEAK
TALK
OO +6
PRE
CLF SCE
PGM
FDR
BUS
0
5
10
15
20
30
MIX B
PGM
AUX
TELCO CHANNELS 1&2 
8 
TALK 
The TALK switch enables the presenter or operator to communicate with 
the telephone caller with the presenters channel fader down so the pre-
senters voice does not go to the program mix. 
The source for the TALK signal is one of the mono channels, pre-selected 
by links set within the XB-14, the factory default is mono channel 1. The 
signal source is pre-fade and pre-mute on the selected mono channel. 
9 
10 
AUX 
This control sends a signal to an auxiliary bus. The signal is sourced pre-fade 
or post-fade depending on the PRE switch position. The pre-fade source 
selection will be affected by the channel ON/OFF switch if active. The send 
control varies the signal level to the bus from off (fully attenuated) to +6dB, 
with unity gain at the arrow. 
6 
7 
CLF SCE 
The Clean-Feed Source switch selects the signal source for the TELCO out-
put. In the un-pressed position the signal will be the entire program (PGM) 
mix (pre main PGM fader) but without the signal from the input on that 
TELCO channel, so the caller does not hear any distracting echo of their 
voice. 
If the switch is pressed, the TELCO output signal is sourced from the AUX 
bus, but minus the AUX signal sent from that TELCO channel. 
This is a really useful feature that can enable the operator to send a mix of 
signals from different channels to the telephone caller using the AUX bus, 
the sources may be on or off air because the sources for the AUX bus can 
be pre or post fader. 
In addition, the AUX bus can be used for off-air audition or recording of an 
interview with a telephone caller (or callers), using pre-fade signals to the 
AUX bus for later playback or editing for the broadcast. By pressing the CLF 
SCE switch the caller will hear the audition mix, or the off-air record mix 
without their own voice.
MIX B 
The MIX B switch routes the channel signal to a stereo bus which is inde-
pendent of the main PGM (program) bus. The signal is post-fade and follows 
the PAN control. The MIX B bus can be used for creating mixes for re-
cording or clean-feed sources for external equipment.
PAN 
The pan control adjusts how the signal from the TELCO input channel is 
shared between the left and right sides of the PGM bus and the MIX B bus.  
Set to the mid position, equal amounts of signal are fed to left and right, 
with pan set to L, none is sent to the Right bus. 
6 
7 
9 
10 
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