Mackie 408S Owner's Manual download pdf (Page 15)

EFX Send

This taps the channel’s signal out to either

the internal

EMAC

Digital Stereo Effects

Processor or to an external device via the

EFFECTS SEND

jack for parallel effects pro-

cessing. Each channel’s effects send signal is

controlled by the channel’s

EFX

knob, and the

overall effects send level is controlled by the

EFX DRIVE LEVEL

knob (located in the

EMAC

section).

The effects send signal is post-EQ and post-

VOLUME

, so these controls affect the signal

going to the effects processor, be it internal or

external.

Each

EFX

send control ranges from off

through unity (the center detent position) on

up to +10 dB of extra gain (when turned fully

clockwise). Chances are you’ll never need this

much extra gain, but it’s nice to know it’s there

if you do.

Normally the effects send signal is routed

to the internal

EMAC

Digital Stereo Effects

Processor (more on

EMAC

coming up). However,

if you plug into the

EFFECTS SEND

jack

(located just below the

EMAC

section) you

can send the effects signal to an external

effects device. You can return the signal from

the external effects device by plugging its

output into the

EFFECTS RETURN

jack(s)

just below the

SEND

jack. This disconnects

the

EMAC

from the internal effects bus.

You mix the amount of effects you want

returned to the main mix by adjusting the

EFX

TO MAIN

control located just above the

MAIN MASTER

. You can also add effects to

the monitor mix by adjusting the

EFX TO

MON

control located just above the

MONITOR MASTER

Note: See “Effects Send and Return” on

page 22 to see how to use

EMAC

and an

external effects processor at the same time.

MON Send

This taps the channel’s signal out to an

external amplifier, which powers your moni-

tor speakers, via the

MONITOR LINE OUT

jack. Each channel’s monitor send signal is

controlled by the channel’s

MON

knob, and

the overall monitor send level is controlled by

the

MONITOR MASTER

control.

The monitor send signal is pre-EQ and pre-

VOLUME

, so if you adjust these controls they will

affect only the main mix and not the monitor mix.

Each

MON

send control ranges from off

through unity (the center detent position) on

up to +15 dB of extra gain.

EMAC Section Description

EMAC™ stands for Extended Multiply and

Accumulate, which is a proprietary 32-bit digital

stereo processor developed by our Digital

Engineering Group. It provides 16 preset digital

effects algorithms for you to select. In addition

to the presets, there are two parameter controls

/ you can adjust to change the sound and

make it unique for your particular application.

EFX BYPASS

EFX DRIVE

LEVEL

120

NORMAL

EFX

CLIP

CUSTOM 32-BIT PRECISION

DIGITAL STEREO EFFECTS PROCESSING

EFX WIDE

EFX DRIVE LEVEL

This controls the signal level being sent to

the input of the

EMAC

module (and to the

EFX

SEND

jack). Use the

EFX

controls on the indi-

vidual channels to adjust the amount of each

channel’s signal you want to go to the

EMAC

Leave the

EFX DRIVE LEVEL

set at the

NOR-

MAL

position. If you find that you’re not getting

enough of the effect in the main mix, make

sure that the

EFX TO MAIN

control is turned

up at least to unity (the center detent posi-

tion). It’s okay to turn up the

EFX DRIVE

LEVEL

some more if you need to. Just make

sure the

EFX CLIP

LED never lights more than

occasionally. Read on to find out why.

EFX CLIP

This indicates when the

EMAC

is 6 dB

below clipping. This LED should only light

occasionally. If it blinks frequently, you should

turn down the

EFX DRIVE LEVEL

a little.

Digital clipping is not pleasant to behold.

EFX BYPASS

Pushing in this button causes the

EFX

BYPASS

indicator to light and mutes the

effects signal. It affects both the internal

EMAC

effects and any external effects

processor you may have connected to the

EFFECTS RETURN

jack.

EFX

MON

12kHz

MID

2.5kHz

LOW

80Hz

VOLUME CH.

INPUT

LEVEL

SET

MIC

INSERT

LINE

+10

+15-15

+12-12

+20dB

HILOW

NORMAL

+15

Mono Version

Channel Strip

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 35 36

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Mackie 408S Owner's Manual Page 15

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