MP-1 Microphone Preamplifier
User Guide and Technical Documentation
page 6
Front Panel Controls and Indicators
LIMITER
POWER
160
80
MP-1 MIC PRE
SOUND
DEVICES
FLAT
GAIN (dB)
ON
ON
0
18
28
36
42 46 50
54
58
62
66
MIC IN
LINE OUT
PHANTOM
48 V
12 V
OFF
BATTERIES
1
2
3
4
5
6
1. LIMITER/Peak LED
Bi-color LED illuminates red at 3 dB below
clipping; illuminates amber to indicate limiter
activity.
2.
LIMITER Switch
Activates the peak limiter. Limits to +17 dBu
output.
3. High-Pass Filter Switch
Three-position switch selects inserts an 80 Hz
or 160 Hz corner frequency filter, 6 dB per
octave. Center position of switch removes the
filter from the signal path.
4. Rotary Gain Switch
Selects the amount of gain from input to out-
put, adjustable in 11 increments.
5.
POWER Switch
Powers the unit when switch is in the up posi-
tion.
6.
POWER LED
Bi-color LED illuminates green when the unit
is powered and changes to red when approxi-
mately four hours of battery life remain.
Back Panel Connectors and Controls
7
8
9
10
LIMITER
POWER
160
80
MP-1 MIC PRE
SOUND
DEVICES
FLAT
GAIN (dB)
ON
ON
0
18
28
36
42 46 50
54
58
62
66
MIC IN
LINE OUT
PHANTOM
48 V
12 V
OFF
BATTERIES
7. BATTERY Compartment
Requires two AA batteries for operation. Insert
positive (+) end of battery first.
8. LINE OUT
Transformer balanced XLR line-level output.
+22 dBu peak output level.
9.
PHANTOM Power Switch
Three-position switch selects either 48-volt or
12-volt phantom power. Center position turns
phantom power off.
10.
MIC IN
Transformer-balanced XLR input accepts
microphone level signals
