Hafler TRM6.1CE - Manual (Page 22)

INPUT SENSITIVITY
The Input Sensitivity adjustment is used to match the monitor with signal levels from a variety of mixing consoles. The
Input Sensitivity uses DIP switches to match input levels over a 15dB range and are marked +1dB, –2dB, –5dB, –8dB,
and –11dB. These numbers indicate the input in dBu required to produce an output of 100dB SPL @ 1 meter. When all
switches are in the OFF (left) position, the monitor is matched to +4dB input level. In the +4dB switch setting, the mon-
itor is less sensitive to the input signal. In the –11dB switch setting, the monitor is more sensitive to the input signal.
+4dB Input +1dB Input –2dB Input –5dB Input –8dB Input
NOTE: When using the INPUT SENSITIVITY, select only one switch configuration at a time. Engaging multiple switch
configurations (i.e., moving two or more switches ON) may cause undesirable operation and is NOT RECOMMENDED.
I
N
P
U
T
–11dB Input
– 13 –
O
PERATION
NOTE: When using the Bass Roll Off, select only the 30Hz or 60Hz filter. Engaging both switch configurations at
one time (both switches ON) may cause undesirable operation and is NOT RECOMMENDED.
BASS ROLL OFF
The Bass Roll Off is a subsonic filter used to limit harmful frequencies sent to the low frequency transducer to prevent
overexcursion. The filter is selectable to electronically limit frequencies below 30Hz or 60 Hz at a 12 dB/octave roll
off. When both switches are in the OFF (left) position, the amplifier has an electrical -3dB down point of 28Hz. For
optimum operation select only one switch configuration at a time.
30Hz Subsonic Filter 60Hz Subsonic Filter