user manual
FLEX ARRAY
FLEX ARRAY user manual
Page 70
Screen - connect to chassis of the unbalanced
equipment, or left disconnected at the unbalanced end
Polarity
In accordance with international standards, T series amplifiers are supplied with Pin 2 hot (+),
so a positive (+V) input gives a positive (+V) output from the positive (+) output terminals.
Input Impedance
Each amplifier channel has an input impedance of 10k
, seen between pins 2 & 3 of the XLR.
When used with the LMS-D2x Loudspeaker Management System, distribution amplifiers are
not required when a large number of T-25 or T-45 amplifier inputs are driven in parallel.
Gain and Sensitivity Settings
Gain settings are changed internally by simple jumper links. Two rows of pins marked - GAIN
A and GAIN B - are situated on the input PCB (PCB701). A jumper link sets the gain and the
settings are as follows:
NOTE: Factory setting is normally link 1 & 2 = 32dB gain.
Setting higher gain does not change the maximum available power but changes the level of
signal input to achieve maximum power. In any case, provided that the input signal is less
than 20dBu/7.7V, the built in limiter circuit will prevent distortion within the amplifier.
The gain should be set to match the signal from the source, e.g. mixer, controller, or
equaliser.
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