User Manual
Allen & Heath     17     XB-14 User Guide 
TELCO CHANNELS 1&2 
TELCO Input Gain 
The Telephone Communication channel input gain control. Varies 
the gain applied to the TELCO input channel from –10dB to +26dB. 
TEL IN 
The Telephone Communication channel input XLR socket. Wired 
as Pin 1=Chassis, Pin 2=hot (+), Pin 3=Cold (-). 
1 
2 
CLF OUT 
Standard XLR output connector for the Clean-Feed output from 
the Telephone Communication channel. 
Wired Pin 1=Chassis, Pin 2=hot (+), Pin 3=Cold (impedance bal-
anced ground). 
3 
4 
5 
100Hz High Pass filter 
Similar to the mono input channel, a 12dB per octave 2-pole high 
pass filter used to filter out any low frequency rumble or pops on 
the TELCO channel input. 
TELCO Channel EQ 
The TELCO Channel EQ is 2 band with corner frequencies of 
12kHz for the HF and 80Hz for the LF. 
10.00 Hz 100.00 1000.00 10000.00 30000.00
-20.00
-15.00
-10.00
-5.00
0.00
5.00
10.00
15.00
20.00
dBr
2 
4 
1 
5 
3 
100Hz
-15 +15
HF
-15 +15
80Hz
LF
CLF OUT
TELCO 1
TEL IN
-1O
26
-5
5
10
20
0
12kHz
GAIN
T1










