Noise button, Noise edit function, Noise button noise edit function – MACKIE QUAD EQ User Manual

Page 12: Owner’ s manual, Quad eq, Owner’s manual

QUAD EQ

Quad EQ

Owner’s Manual

Owner’

s Manual

15. NOISE button

1. Press a CHANNEL SELECT Button (A, B, C or

D) and the NOISE button, then several inter-
esting things will happen:

• The audio input to the currently-selected chan-

nel is interrupted.

• Pink noise appears at the output of the Quad

EQ to play in your speaker system.

• Press RTA if you want to see this noise.
• If you have stereo-linked channels, then the

noise will appear in both channels.

• The microphone input is still live, allowing you

to use the microphone to sample the noise play-
ing in your system. (Press Mic to do this.)

• If the audience is present, you may be tarred

and feathered (unless the noise is an improve-
ment over the band).

The default level is off, and it needs to be edited to

adjust the level of the noise (see below). Once it has
been set to a suitable level, and you follow the first step
to turn on the noise, it will turn on at the last level it
was set to.

When the noise is playing, you can use the measure-

ment microphone to set up, analyze, and equalize your
system. You will often have NOISE and MIC selected at
the same time. The response from your microphone will
show the effect of room reflections, standing waves, and
the output characteristics of your speakers, boosting
and cutting the level across the frequency band. You can
then use the Filter buttons to adjust the EQ of problem
areas. For example, if a large level boost is present in a
certain frequency range, this area will be more suscept-
able to feedback. See details of the MIC button for more
information about using the measurement microphone.

The noise source also comes in very handy

for testing your system, as a quick check that
all of your speakers are working correctly.

We made it so you have to press a CHANNEL SELECT

button and then the NOISE button to have the noise
come out to play. This prevents you from accidentally
turning on the noise during a heavy thrash-speed-metal
concert, or during a memorial service for a sound engi-
neer who turned the noise on accidentally at a similar
concert.

NOISE EDIT function

This function allows you to adjust the output level of

the noise generator. The default level is off, to prevent
the accidental turn-on of a hot noise signal through a
speaker system.

1. Press EDIT [13] (blinks) and then NOISE

(blinks).

2. The KNOB [19] can then be used to adjust the

level from off, to the range of –50 dB to 0 dB, as
displayed in the DISPLAY [20].

3. Press the KNOB or EDIT to exit the edit mode.
4. When you turn on the noise, it will come on at

the last level you have set.

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