Mackie SRM150 User Manual page 9

This is a global phantom power switch and applies 48V
to the XLR input connectors on channels 1 and 2.
Dynamic microphones, like Shure's SM57 and SM58, do
not require phantom power. However, phantom power
will not harm most dynamic microphones should you
accidentally plug one in while the phantom power is
turned on. Be careful with older ribbon microphones.
Check the manual for your microphone to find out for
sure whether or not phantom power can damage it.
This is used to adjust the signal level from the
SRM150 mixer, going into the built-in power amplifier.
Follow the Quick Start guide on page 4 for setting the
MAIN LEVEL control.
Use the EQ controls to make overall adjustments to
the sound of the SRM150.
The HIGH EQ provides a boost or cut of up to 15
dB for the very high frequencies, above 12 kHz. These
frequencies include the sizzle of cymbals, the edge of
a guitar, or the upper harmonics of vocals. In general,
boosting the HIGH EQ will brighten the sound of the
loudspeaker.
The MID EQ provides a boost or cut of up to 15 dB for
the mid-range frequencies around 2.5 kHz. Most vocals
are located in the mid-range frequencies, so this can be
used to bring the vocals up or down in the mix.
The LOW EQ provides a boost or cut of up 15 dB for
the very lowest frequencies, below 100 Hz. These fre-
quencies are represented by the punch in bass drums,
bass guitar, and some really serious male singers.
MAIN EQ
OFF MAX
LEVEL
PHANTOM POWER
48V
INSTRUMENT (CH 1)
1
2
MIN MAX MIN
MIC/LINE
MIC/LINE
SRM150
U
HIGH
12kHz
-15 +15
U
MID
2.5kHz
-15 +15
U
LOW
100Hz
-15 +15
3
MAX MIN MAX
L
R
9