PAG E 6
A M I S Z R M 4 I N S TA L L AT I O N & O P E R AT I O N M A N UA L
H P F
When this switch is in the "HPF OUT"
position, the signal bypasses the high
pass filter. Otherwise the signal is filtered
by a high pass filter with a knee of
approximately 150Hz. This is useful in
removing "thumps", "pops" and "rumble"
when using the input with a lectern or
handheld microphone.
P H A N TO M
15v phantom power is available for
condenser or electret microphones on the
XLR input when this switch is in the
"PHANTOM ON" position.
M I C / L I N E
These two switches control the sensitivity
of the XLR input. In the "MIC" position the
XLR input is suitable for use with
microphones; in the "LINE" position the
XLR input is suitable for use with a
balanced line level signal.
NOTE: Both MIC/LINE
switches must be in the same
position for correct operation
of the balanced input. The
MIC/LINE switches only affect
the XLR input.
G A I N T R I M
The input gain can be cut or boosted by
up to 15dB using this control. This control
affects both the XLR and the RCA inputs.
This allows a wide rage of program
sources to be set up with optimum gain
structure. With the gain trim in the centre
position, the boost/cut is set to 0dB.
See the block diagram on page 9 for
details of the gain structure.
TO N E S L E V E L
This controls the level of all the tones
generated by the tone module.
I N T E R N A L A D J U S T M E N T S
1
2
4
5
3
☛
1
2
3
4
5