Alesis DEQ830 User Manual

Basics of Equalization

Curve 00 is a “flat” curve.
We recommend that you
leave Curve 00’s gain
settings at 0 so that you may
use it as a “clean slate” for
building new curves from the
ground up.

works well for male vocals. Say you have two or three channels of

male vocals feeding into the DEQ830. To EQ these, just retrieve

the curve from the Curve Bank, apply it to each male-vocal

channel and modify it slightly to fit each particular vocal.

works well for male vocals. Say you have two or three channels of

male vocals feeding into the DEQ830. To EQ these, just retrieve

the curve from the Curve Bank, apply it to each male-vocal

channel and modify it slightly to fit each particular vocal.

For information on how to do this, see page 41.

Retrieve Curve mode

This mode allows you to take a stored EQ curve from the Curve

Bank and place it into the currently selected channel or Link

Group. For information on how to do this, see page 41.

This mode allows you to take a stored EQ curve from the Curve

Bank and place it into the currently selected channel or Link

Group. For information on how to do this, see page 41.

Bypass mode

This mode is nearly as simple as it sounds—pushing the

[BYPASS] button will let you hear the non-equalized audio. But

there’s a bit more to it than that. There are also two gain

adjustment stages that can be used to compensate for a reduction

or increase in signal level caused by the equalization curve being

used. The value for one of these stages, Channel Level, is saved

along with the EQ settings when the program is stored; the value

for the other stage, Master Level, is not. So what Bypass mode

really is doing is causing the audio to “pass by” the processing

stages that are stored as a part of the program.

This mode is nearly as simple as it sounds—pushing the

[BYPASS] button will let you hear the non-equalized audio. But

there’s a bit more to it than that. There are also two gain

adjustment stages that can be used to compensate for a reduction

or increase in signal level caused by the equalization curve being

used. The value for one of these stages, Channel Level, is saved

along with the EQ settings when the program is stored; the value

for the other stage, Master Level, is not. So what Bypass mode

really is doing is causing the audio to “pass by” the processing

stages that are stored as a part of the program.

You’ll find a description of
Channel Level mode further
down on this page. For a
description of the Master
Level function, turn to page
44.

The following diagram shows the relationship between each of the

stages in the DEQ830’s signal processing chain.

The following diagram shows the relationship between each of the

stages in the DEQ830’s signal processing chain.

Channel Level mode

When you run a number of different instruments into the

DEQ830, each channel may experience drastically different signal

levels. Channel Level mode can be used to adjust the output of

each channel independently.

When you run a number of different instruments into the

DEQ830, each channel may experience drastically different signal

levels. Channel Level mode can be used to adjust the output of

each channel independently.

Unlike the Master Level
function in Utility mode, the
settings for Channel Level
mode are stored with each
curve or program. For more
on Channel Level mode, see
page 41.

This mode is also useful when processing a stereo signal. If the

combination of the source material and extreme EQ settings is

causing the output of the DEQ830 to clip, Channel Level mode

can be used to adjust the output of two stereo channels

simultaneously. To do this, the two channels must be linked. See

page 42 for more details on Link mode.