NOTE:
Remember that in the models MF8 and MF12, this limiter configuration takes place in
the driver board.
INPUT SENSIBILITY/GAIN ADJUST
The power amplifier input sensibility may be configurated with two jumpers, one for
each channel. When the jumper of the channel that we want to configure is open (it is equal
for both channels) the input sensibility (input level necessary in order to produce the maxi-
mum output level) is 0 dBu. With the jumper closed, the input sensibility is +8 dBu.
The factory configuration is with input sensibility 0 dBu.
NOTE:
0 dBu = 0.775 Volts; +8 dBu = 1.95 Volts.
CONFIGURATION
CH1
CH2
Input sensibility = 0 dBu.
Input sensibility = +8 dBu.
The gain (times that the output signal is increased with regard to input signal), depends
on the power amplifier model, as well as of the input sensibility configuration, in the next
table is shown the gains according to the power amplifier model and his input sensibility
configuration:
GAIN (dB)
MODELS
INPUT SENSIBILITY
0 dBu (0,775 V).
+8 dBu (1,95 V).
MF 8
35
27
MF 12
37
29
MF 16
38
30
MF 24
40
32
The input sensibility could be configured in intermediates values, welding a resistor
between the jumper pins. This is show in the next drawing:
ALTAiR
PROFESSIONAL POWER AMPLIFIERS MF SERIES
24
