Allen&Heath XB-10 - Manual (Page 22)

Allen & Heath 22 XB-10 User Guide
STEREO INPUT CHANNELS
L R
BAL
PFL
PK !
SIG ST1
0
LEV -10
-20
-30
BAL
The balance control adjusts the relative levels of the left & right signals in
the stereo input channel as they are sent to the PGM bus. Set to the mid
position, the signals are balanced equally. With the balance control set
fully anticlockwise the right channel will be fully attenuated and the left
channel will increase by approximately 3dB.
ON (+START/CUE) switch
This mechanically latching switch operates the channel mute circuitry,
turning the signal to the PGM, ALT and Aux buses on or off.
With the button depressed the signal is routed to the PGM bus and the
pre/post AUX bus. With the button up the signal is routed to the ALT
bus and the prefade AUX bus.
The switch is illuminated green when pressed.
The ON switch also activates the START/CUE logic signals (for the cor-
responding selected input) wired to the remote interface connector on
the rear panel. This allows the ON switch to start or cue a transport
such as a CD player.
PFL Switch
The PFL (Pre-Fade Listen) switch sends the channel signal to the PFL bus and subse-
quently to the headphones/CRM speakers and the main L R meters. Used for check-
ing the audio signal before raising the level or un-muting the channel.
SIGNAL & PEAK LEDs
The Signal LED illuminates when the pre-fader signal level is above –15dB.
The Peak LED illuminates and stays on for around 0.5 seconds when a peak level is detected
(pre-fader signal) within 5dB of clipping.
Level
This control adjusts the level of the channel signal to the left & right PGM bus,
ALT bus and post fade Aux.
The left and right channels are mixed for the ALT and aux mono buses.
With the pot fully clockwise, the channel has unity gain.