Mackie Personal PA User Manual download pdf (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.

6. MAIN LEVEL

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.

7. HIGH, MID, and LOW EQ

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.

HIGH

12kHz

MID

2.5kHz

LOW

100Hz

MAXMIN

+15-15

MAXMINMAXMIN

SRM150

MAXOFF

LEVEL

MIC/LINE

2 3

PHANTOM POWER

MAIN

INSTRUMENT (CH 1)

48V

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 19 20

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Mackie Personal PA User Manual Page 9

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