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1

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iii

GT-80DSP

QuadraDrive

tm

Amplifier

with

Digital

Sound

Processing

OWNER'S

MANUAL

GT-80DSP

QuadraDrive

,m

Congratulations!

You

are

now

the

proud

ownnr

of

one

of

the

newest

and

most

innovative

guitar

amplifiers

available

Ihe

Crate

GT-80DSP

QuadraDrive^

m

with

Digital

Sound

Processing.

This

versatile

and

compact

am¬

plifier

features

four

separate,

footswitchable

Gain

controls,

with

your

choice

of

Tube

or

Solid

State

preamps

for

either

the

Rhythm

or

the

Lead

channel.

Discrete

tones

and

Master

Level

controls

for

each

channel,

along

with

Crate's

exclusive

Tube

Driven

Mosfet

power

amp,

add

even

more

flexibility

and

control

The

easy

to

operate

Digital

Sound

Processing

section

offers

you

a

wide

variety

of

effects,

from

some

of

the

finest

reverb

settings

to

the

truly

bizarre.

A

unique

feature

of

the

Digital

Sound

Processing

is

its

ability

to

"remember*

settings

for

each

preamp

and

channel

selection.

Like

all

Crate

products,

your

GT-80DSP

is

proudly

made

in

America,

using

only

the

best

compo¬

nents.

Extensive

testing

at

the

hands

(and

ears)

of

skilled

technicians

and

musicians

insures

you

that

this

amplifier

is

the

absolute

best

it

can

be.

In

order

to

get

the

most

out

cf

your

new

amplifier,

we

strongly

urge

you

to

go

over

the

information

contained

in

this

manual

before

you

begin

playing.

And

thank

y

ou

for

choosing

TABLE

OF

CONTENTS:

About

the

GT-60DSP:

3

The

GT-80DSP

Front

Panel:

4-6

Tho

GT-80DSP

Roar

Panel:

7

About

the

Digital

Sound

Processor:

Using

the

Mode

control:

8

Table

of

Settings:

9

Technical

Description:

10

Block

Diagrams:

11

Some

Suggested

Settings:

_12-13

System

Block

Diagram:

14

Technical

Specifications:

15

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(1)

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NOT

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CR

MCXSTURE

CAUTION:

NOUSER

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PARTS

INSIDE

REFER

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CAUTION:

OUR

AMPLIFIERS

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Of

PROOuClNG

H«>*

SOUNO

PRESSURE

l£v£lS

CONTINUED

EXPOSURE

TO

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SOUND

PRESSURE

LEVELS

CAN

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PERMANENT

HEARING

IWPA

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OR

LOSS

USER

CAUTlCW

IS

ADVSED

AND

EAR

PROTECTION

IS

RECOMMENDED

IP

UNIT

IS

OPERATED

AT

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Y

CRATE

GT-80DSP

QuadraD

rive'

ABOUT

THE

GT-80DSP:

The

Crate

GT-80DSP

QuadraDrive

*

with

Digital

Sound

Processing

is

truly

unique

and

versatile,

ottering

you

more

performance

and

flexibility

than

any

other

compact

amplifier.

Start

with

two

completely

separate

preamp

stages:

Solid

State

and

Tube

I

hen

add

the

two

chan¬

nels:

Rhythm

and

Lead

Put

them

together

and

you

have

your

choice

of

some

of

the

hottest

contem¬

porary

sounds

and

the

coolest

vintage

sounds

available.

For

example,

Solid

State

Rhythm

gives

you

‘today's

sourd:"

crisp

highs

and

an

ultra-tight

bass

response,

while

Tube

Rhythm

offers

you

that

vin¬

tage

tube

sound,

from

ultra-clean

to

a

bluesy

crunch.

Solid

State

Lead

gives

you

all

of

the

traditional

Crate

Mega-Gain

hard

rock

sizzle

and

fire,

v/ith

lots

of

definition

and

compression,

and

Tube

Lead

starts

with

a

bluesy

crunch

and

can

deliver

everything

up

to

screaming,

tube-driven

lead

distortion

with

plenty

of

sustain

and

total

tone

control.

But

that's

not

all.

Now

add

Crate’s

easy

to

operate

Digital

Sound

Processing,

with

31

preset

ef¬

fects

including

a

variety

of

delays,

backwards

sampling,

gated

outputs

and

reverbs.

Select

an

effect

for

each

of

the

four

preamp

and

channel

combinations

and

the

amplifier

will

‘remember”

each

setting

and

recall

it

as

you

switch

between

preamps

and

channels.

Add

a

tootswitch

and

you

can

preset

I

WO

set¬

tings

per

preamp/channel

cttoice,

for

up

to

8

instantly

accessible

effects.

And

the

GT-80DSP's

memory

is

"non-volatile'

which

means

that

orcc

you

enter

your

settings.

thoy'ro

in

tho

memory

until

you

change

them!

FEATU

R

ES

OVERVIEW:

Given

below

is

a

quick

overview

of

the

GTSODSP's

leatures

and

controls:

►

Two

Com

ple

tely

Separate

C

ha

nnels:

Independent

Gains.

3-band

EOs,

and

Levels.

►

Four

Ga

in

C

ontrols:

Tube

Lead,

Solid

State

Lead,

Tube

Rhythm,

Solid

State

Rhythm.

►

Di

gital

Sound

Proce

ssing:

A

wide

variety

of

digital

revorbs

and

effects.

The

ability

to

store

sottings

for

each

of

tho

four

channel/proamp

combinations

Footswitchable.

v/ith

9

settings

per

combinations.

►

Tube

Driven

Mo

sfet

P

ower

Ampl

ifier:

Crate

exclusive.

No

traditional

solid

state

output

devices

means

no

chance

of

harsh

“square

wave

-

distortion

►

Total

Foot

switc

h

Control:

Channel

and

Preamp

selection.

Digital

effects

control.

►

External

Speaker

Jack:

Series

connection

means

no

chance

of

overloading

the

amplifier.

Standard

1/4*

mono

phone

jack.

►

Ef

fects

L

oop:

1/4‘

Line

Out/Line

In

]acks.

Allows

external

signal

processor

connection.

Allows

direct

connection

to

external

amplifier,

mixer,

recording

console

or

whatever.

CR£3m£

GT-80DSP

QuadraDrive'"

The

GT-80DSP

Front

Panel:

1:

INPUT:

Connect

your

guitar

here

using

a

shielded

instrument

cable.

LEA

P

Q

aiflSi

2:

TUBE

GAIN:

This

serves

as

the

gain

control

lor

the

Lead

channel's

Tube

preamp

soctbn,

giving

you

control

over

the

compression

and

overdrive

characteristics

of

the

GT-80DSP‘s

input

tubes.

Use

this

control

along

with

the

Lead

Channel's

level

control

(#15)

to

create

a

wide

variety

of

sounds

at

any

volume

level.

(Some

suggested

settings

can

be

found

on

page

12.)

With

the

control

to

the

lull-left

position,

no

signal

passes

through.

As

you

bring

the

control

towards

center

you

increase

the

signal

level

ana

the

tube

compression,

wiili

maximum

tube

dis¬

tortion

towards

the

full-right

position.

3:

LEAD

LED:

This

LED

glows

red

when

the

Lead

Channel

is

chosen,

and

along

with

LED

#14

gives

you

a

visu¬

al

sign

that

the

Lead

Gains,

tone

section

and

Master

Level

are

active.

4:

SOLID

STATE

GAIN:

This

serves

as

the

gain

control

tor

the

Lead

channel's

Solid

Sate

preamp

sectbn.

Use

this

control

along

with

the

Lead

Channel's

level

control

(#15)

to

crcato

a

wide

variety

of

sounds

at

any

volume

lev¬

el

(Some

suggested

settings

can

be

found

on

page

13.)

With

the

control

to

the

full-left

position,

no

signal

passes

through.

As

you

bring

the

control

towards

center

you

increase

the

signal

level

and

compression,

reaching

maximum

distortion

in

the

full-right

position.

5:

CHANNEL:

Select

orther

the

Lead

channel

(switch

in

tho

IN

position)

or

the

Rhythm

channel

(switch

OUT)

with

this

pushbutton

switch.

The

channel

indicator

LEDs

(#3

and

14

for

lead.

#9

and

19

lor

rhylhm)

work

with

this

switch

as

a

visual

guide.

NOTE:

When

a

footswitch

is

connected

to

the

Channel

Select

footswitch

jack

(see

#29.

rear

panel)

the

front-

panel

switch

will

have

no

control

over

which

channel

is

selected.

6:

TUBE/SOLID

STATE:

Select

either

the

Tube

preamp

(switch

IN)

or

the

Solid

State

preamp

(switch

OUT)

for

either

channel

with

this

pushbutton

switch.

The

Tube

LED

(#7)

works

with

this

switch

as

a

visual

guide:

it

glows

when

the

tube

section

has

been

selected.

NOTE:

When

a

footswitch

is

connocted

to

the

Channel

Select

footswitch

jack

(which

also

serves

as

the

Tube/Solid

State

select:

see

#29.

rear

panel)

the

front-panel

switch

will

have

no

control

over

which

preamp

sec¬

tion

is

selected.

7:

TUBE

LED:

This

tube-shaped

symbol

glows

orange

when

the

Tube

preamp

seclion

is

selected,

giving

you

a

quick

visual

reference

as

to

which

preamp

section

is

active.

8:

TUBE

GAIN:

This

serves

as

the

gain

control

for

the

Rhythm

channel's

Tube

preamp

section,

giving

you

con¬

trol

over

the

compression

and

overdrive

characteristics

ot

the

GT-80DSP's

preamp

tube.

Use

this

control

along

with

the

Rhythm

Channel's

level

control

(#20)

to

create

a

wide

variety

of

sounds

at

any

volume

level.

(Some

4

suggested

settings

can

be

found

on

page

12.)

With

tho

control

to

the

full-left

position,

no

signal

passes

through

As

you

bring

the

control

towards

center

you

increase

the

signal

level

and

the

tube

compression,

with

a

bluesy

tube

crunch

coming

to

life

as

you

approach

a

setting

of

8

and

thicker

tube

distortion

in

the

full-right

position.

9:

RHYTHM

LED:

This

LED

glows

green

when

the

Rhylhm

Channel

is

chosen.

and

along

wth

LED

#19,

gives

you

a

visual

sign

that

the

Rhythm

channel

is

active.

10:

SOLID

STATE

GAIN:

This

serves

as

the

gain

control

for

the

Rhythm

channel's

Solid

State

preamp

section.

Use

this

control

along

with

the

Rhythm

Channel's

level

control

(#20)

to

create

a

wide

variety

of

sounds

at

any

vol¬

ume

level.

(Some

suggested

settings

can

be

found

on

page

13.)

With

the

control

to

the

full-left

position,

no

sig¬

nal

passes

through.

As

you

bring

the

control

to

the

right

you

increase

the

signal

level,

which

stays

clean

all

the

way

up

to

the

full-right

position.

LEAP_

CHANNE

L;

11:

LOW:

Adjust

the

Lead

Channel's

low

frequency

output

with

this

control:

the

center

position

is

"flat:

that

is.

no

boost

or

cut.

By

turning

the

control

to

the

left

you

reduce

the

low

trequency

output;

turning

it

to

the

right

in¬

creases

the

low

trequency

output.

The

Low

control

provides

up

to

12dG

of

boost

or

cut

centered

at

100Hz.

12:

MID:

Adjust

the

Lead

Channel's

midrange

output

with

this

control:

in

the

center

position

the

midrange

output

will

be

"flat"

(no

boost

or

cut).

Turning

the

control

to

the

left

reduces

the

midrange

output;

turning

it

to

the

right

increases

the

midrange

output.

The

Mid

control

provides

up

to

5dB

of

boost

or

cut

centered

at

1000Hz,

which

atfects

the

‘voice-

ot

your

guitar's

sound.

13:

HIGH:

Adjust

the

Lead

Channel’s

high

frequency

output

with

this

control

in

the

center

position

the

high

fre¬

quency

output

will

be

"flat"

(no

boost

or

cut).

Turning

the

control

to

the

left

reduces

the

high

frequency

output;

turning

it

to

the

right

increases

the

high

frequency

output.

The

High

control

provides

up

to

ICdB

of

boost

or

cut

centered

at

5000Hz,

which

allows

you

to

adjust

the

crispness

or

the

"bite"

of

your

guitar.

14:

LEAD

LED:

This

LED

glows

red

when

the

Lead

Channel

is

chosen,

and

along

with

LED

#3,

gives

you

a

visu¬

al

sign

that

tho

Load

Gains,

tone

section

and

Master

Level

are

active

15:

LEVEL:

Adjust

the

output

level

of

the

Lead

channel

with

this

control:

in

the

full-left

position

there

is

no

output.

As

you

rotate

the

control

to

the

right

you

increase

the

strength

of

the

Lead

channel's

signal

going

into

the

power

amp,

thus

increasing

the

output

volume.

The

signal

level

to*

the

Line

Out

jack

(see

#32.

rear

panel)

is

simulta¬

neously

affected

by

this

control

RHYTHM

CHANNEL;

16:

LOW:

Adjust

the

Rhythm

Channel's

low

frequency

output

with

this

control:

the

center

position

is

’flat."

that

is.

no

boost

or

cut.

By

turning

the

control

to

the

left

you

reduce

the

low

frequency

output;

turning

it

to

the

right

m--

creases

the

low

trequency

output.

The

Low

control

provides

up

to

12dB

of

boost

or

cut

centered

at

100Hz.

5

CRAJ1E

GT-80DSP

QuadraDrive'"

The

GT-80DSP

Front

Panel

-

Con

't:

*

*

*

Please

refer

to

the

illustration

on

page

4.

*

'

*

17:

MID:

Adjust

the

Rhythm

Channel's

midrange

output

with

this

control:

in

the

center

position

the

midrange

out¬

put

will

be

'flat”

(no

boost

or

cut).

Turning

the

control

to

the

left

reduces

the

midrange

output;

turning

it

to

the

right

increases

the

midrange

outpul.

The

Mid

control

provides

up

to

7dB

of

boost

or

cut

centered

at

800Hz.

which

affects

the

'voice'

of

your

guitar’s

sound.

18:

HIGH:

Adjust

the

Rhythm

Channel's

high

frequency

output

with

this

control:

in

the

center

position

the

high

frequency

output

v/ill

be

“flat"

(no

boost

or

cut).

Turning

the

control

to

the

left

reduces

the

high

frequency

output:

turning

it

to

the

right

increases

the

high

frequency

output.

The

High

control

provides

up

to

15dB

of

boost

or

cut

centered

at

10kHz,

which

albws

you

to

adjust

the

crispness

or

the

'bite'

of

your

guitar.

19:

RHYTHM

LED:

This

LED

glows

green

when

the

Rhythm

Channel

is

chosen,

and

along

v/ith

LCD

#9,

gives

you

a

visual

sign

that

the

Rhythm

channel

is

active.

20:

LEVEL:

Adjust

the

output

level

of

the

Rhythm

channel

with

this

control:

in

the

full-left

position

there

is

no

out¬

put.

As

you

rolate

the

control

to

the

right

you

increase

the

strength

of

the

Rhylhm

channel's

signal

going

into

the

power

amp.

thus

increasing

the

output

vetume.

The

signal

level

tor

the

Line

Out

jack

(see

#31.

rear

panel)

is

si¬

multaneously

affected

by

this

control.

Ibe

Digital

Sound

Processor

(DSP):

I

Gtvea

below

is

a

brief

description

of

the

Digital

Sound

Processor's

controls.

For

complete

informa-

||

tion

on

the

use

and

functions

of

the

Digital

Sound

Processor,

please

see

pages

8

through

11.

21:

LED:

This

LED

indicator

glows

when

the

Digital

Sound

Processor

is

active,

indicating

the

presence

of

a

pro¬

cessed

signal

22:

MODE:

Select

the

type

of

digital

sound

processing

effect

with

this

control.

Each

preamp

and

channel

setting

will

'remember'

its

setting,

allowing

you

to

switch

between

channels

and

preamps

(Tube'Sotid

State)

williout

hav¬

ing

to

reset

the

Mode

control.

Fora

complete

listing

of

the

different

effects

and

their

corresponding

settings,

see

"Usiag

the

Mode

Control"

on

page

8.

23:

LEVEL:

Adjust

the

amount

of

digital

sound

processing

effect

with

this

control:

in

the

full-left

position

the

out¬

put

signal

is

“dry'

(no

revert

or

effect);

rolating

the

control

to

the

right

increases

the

amount

ot

ettect.

24:

ON

LED:

The

word

'ON"

will

glow

red

when

you

turn

tho

GT

GODSP

on.

showing

you

that

the

amplifier

is

ac¬

tivated

and

ready

to

play.

25:

POWER:

This

heavy-duty

rocker-type

switch

is

used

to

turn

the

amplifier

ON

in

the

left

position.

OFF

in

the

right

position.

The

ON

LED

(#24)

works

with

this

switch

as

a

visual

indicator.

6

©

GT-80DSP

Quadr*Drive'

m

The

GT-80DSP

Rear

Panel:

26:

POWER

CORD:

Firmly

plug

the

supplied,

heavy-duty

grounded

power

cord

into

this

receptacle

When

in

use.

be

sure

this

cord

is

properly

plugged

into

a

safely-wired,

grounded

120

volt.

60

cycle

AC

power

outlet.

DO

NOT

attempt

to

defeat

the

ground

connection

on

this

cable!

If

your

GT-80DSP

was

purchased

outside

ot

the

United

States,

see

the

unit’s

rear

panel

for

its

power

rat¬

ing

and

follow

the

above

guidelines.

27:

FUSE:

This

protects

the

amplifier

against

damages

caused

from

a

faulty

AC

power

source

or

other

problems.

It

the

fuse

blows,

replace

it

ONLY

with

the

same

size

and

type

2.5A

120V

sb-blow

fuse.

If

the

fuse

blows

repeat¬

edly

check

the

AC

source

if

rt's

okay,

contact

your

Crate

dealer

for

service

information.

28:

EXTERNAL

SPEAKER:

Allows

you

to

connect

the

output

of

the

GT-80DSP

to

an

external

speaker,

placing

it

in

series

with

tho

12'

speaker

inside

Ihe

amplifier.

Since

this

is

a

series

connection,

there

is

no

chance

of

dam¬

aging

the

amplifier

wilh

too

small

of

an

impedance

load.

However,

keep

in

mind

that

by

adding

speakers

you

raise

the

total

impedance,

which

reduces

the

efficiency

of

the

amplifier,

thus

bringing

down

the

overall

volume

level.

29:

CHANNEL

SELECT

FOOTSWITCH:

A

dual

footswitch

can

be

plugged

in

here

to

give

you

remote

control

for

the

selection

of

the

Lead,Rhythm

channels

AND

the

Tube/Solid

State

preamp

sections.

When

connected,

the

footswitch

overrides

the

front

panel

switches

for

these

functions.

NOTE:

This

is

a

STEREO

1/4“

jack:

"ring'

controls

the

preamp

sections,

"tip"

controls

channel

selection,

'sleeve"

is

ground

for

both.

Use

only

a

stereo-plug

equipped

footswitch

(such

as

the

Crate

FS-60),

or

a

three-way

toot-

switch

(such

as

the

Crate

FS-80)

to

control

Reverb

as

well

-

see

#30.

30:

REVERB

FOOTSWITCH:

A

single

footswitch

can

be

plugged

in

here

to

give

you

remote

control

for

the

Digi¬

tal

Sound

Processing

Mode

tor

all

channels.

The

footswitch

offers

you

a

choice

of

Iv/o

Mode

settings

per

chan¬

nel:

presetting

cne

of

the

choices

to

"bypass"

gives

you

the

traditbnal

“crVoff"

control.

For

additional

information

please

see

‘Using

the

Mode

control'

on

page

8.

31:

EFFECTS

LOOP

LINE

IN:

Connecting

an

external

signal

processor,

such

as

digital

delay

or

echo,

can

be

accomplished

through

the

Line

In

and

Line

Out

jacks.

Connect

the

OUTPUT

of

the

external

device

to

the

Line

In

jack

using

a

shielded

cable

with

mono

1/4"

phone

plugs.

This

sends

the

line-level

signal

IN

to

the

GT-80DSP’s

internal

power

amplifier.

Ihe

Line

In

jack

is

Post-Master

EQ

and

Post-Master

Level.

32:

EFFECTS

LOOP

LINE

OUT:

This

carries

a

pre-amplified.

post-EQ

signal

to

an

external

effects

device,

am¬

plifier.

mixing

console

or

recorder.

Connect

the

Line

Out

jack

to

ihe

INPUT

of

the

device

using

a

shielded

cable

with

mono

1/4"

phone

plugs.

This

sends

a

line-level

signal

OUT

from

the

GT-80DSP.

The

Line

Out

jack

is

Post-

Master

EO

and

Post-Master

Level,

therefore

its

tone

and

output

level

are

governed

by

the

settings

of

the

amplifi¬

ers

controls.

The

Line

Out

jack

is

an

unbalanced

mono

1/4'

type.

7

rRAFE

n.T

.^p

qurinDme-

ABQUT

THE

DIQITAL

SfiUMB

PRO

CESSO

R;

Using

the

Mode

Control:

The

Digital

Sound

Processor's

32

position

Mode

control

allows

you

to

instantly

access

the

exact

type

of

effect

you

want

-

from

classic

reverberation

to

radical

’backwards'

sounds

-

for

any

of

the

preamp

or

channel

set¬

tings.

The

diagram

below

illustrates

where

each

’family"

of

effects

is

located.

Use

this

diagram

along

with

the

table

on

the

facing

page

to

familiarize

yourself

with

the

locations

of

the

many

different

sound

effects

possblo

from

your

GT-80DSP.

The

setting

ot

the

Mode

Control

will

determine

the

type

of

effect

for

whichever

preamptohannel

combina¬

tion

the

amp

is

set

to

at

the

time

you

adjust

the

Mode

control.

Once

set,

the

GT-80DSP's

non-volatile

memory

retains

the

setting

until

you

reset

it.

Example:

Plug

in

your

guitar

and

turn

on

the

amplifier.

Set

Channel

Select

to

Rhythm,

Tube/S.S.

Select

to

Tube.

Now

set

the

Mode

Control

to

’12"

(medium

gated

reverb).

Strike

a

chord

on

your

guitar

and

listen

to

the

sound

of

the

effect.

Press

in

the

Channel

Select

switch

to

choose

the

Lead

Channel,

then

set

the

Mode

Control

to

26

(large

hard

surface

echo).

Strike

a

chord

and

listen

to

the

results.

Now

press

Select

again

to

get

back

to

the

Rhythm

Channel

and

strike

a

chord

-

even

though

you

haven't

changed

the

setting

of

the

Mode

Control,

the

amplifier

'remembered'

that

you

had

programmed

in

setting

'

12

'

and

kept

the

effect

as

you

left

it.

There's

more:

When

a

Reverb

footswitch

is

used,

you

can

program

each

of

the

four

channel/preamp

combinations

with

two

Mode

settings.

If

you

want

to

control

reverb

on/off

with

the

footswitch,

for

example,

set

the

Mode

to

'O'

(bypass),

hit

the

footswitch

and

set

Mode

to

'S'

(large

bright

hall).

Now

you

have

the

ability

to

switch

the

reverb

on

and

off

with

the

footswitch.

With

the

footswitch

you

have

a

choice

of

two

reverb

settings

for

each

of

the

four

preamp/channel

combi¬

nations,

for

the

most

flexibility

and

versatility

possible!

8

tfiil

Table

of

Settings:

The

table

below

lists

each

of

the

32

settings

of

the

GT-80DSP's

Mcde

control,

atong

with

a

brief

explana¬

tion

of

each

effect.

NO.

NAME

OFF

1

I

SMALL

HOOM.BRK1HT

2

SMALL

ROOM.

DAliK

3

SMALL

HALL.

BRIGHT

SMALL

HALL.

5

LARGE

HALL.

BRIGHT

5

LARGE

HALL.

DARK

AVERAGE

CUB.

BRIGHT

AVERAGE

CLL6.

DARK

CONCERT

HALL.

BRIGHT

TO

CONCERT

HAIL.

DARK

11

STADUM

12

GATED

REVERB.

MEDIUM

13

GATED

REVERB.

LONG

14

PLATE

REVERB

15

TRADITIONAL

REVERB

SLAPBACK.

SHORT

17

I

SLAPBACK.

MCDIUM

SLAPBACK.

LONG

19

SHORT

NWDCRATE

SURFACE

ECHO

20

3

IOPT

HARD

SURFACE

ECHO

21

SHORT/MBDPUM

MODERATE

SURFACE

22

MEDIUM

SOFT

SURFACE

ECHO

MEDIUM

HARC

SURFACE

ECHO

MEDIUM

GLASS

SURFACE

FCHO

ECHO

LARGE

SOFT

SURF

ACT

ECHO

CCIIO

IAHGE

MODE

HATE

SURE

ACE

ECHO

ECHO

LARGE

HARD

SURFACE

ECHO

FCHO

28

INFINITE

DELAY

29

THICKENER

MULTI-TAP

31

HZflHVHfl

TYPE

DESCR*»TK>N

NONE

BYPASS

-

no

signal

processing

occurs

_

SMALL

REVER8

fT

*

8nmfly

room

wlh

hardwood

loors

SMALL

RCVCRO

IT

X

a

carpolod

room

win

up

lo

low

pooplo

SMALL

REVERB

20’

*

40"

Rettea&al

Hal

wlh

»wJ

(touts,

hard

wafts.

SMALL

REVERB

20'

x

4(T

carpeted

Rehoarsai

Ha*

win

craped

waas

ard

up

lo

30

peepiu

REVERB

50’

x

100’

•rrpty

Rehearsal

Hal

wlh

20

ceftngs

LARGE

REVERB

50

x

100’

Rehearsal

Hal

wlh

up

lo

50

Irion®

and

crew

LARGE

REVERB

‘00

capacly

emply

dub.

wood

doors,

afteroxxi

jound

chock

LARGE

REVERB

500

cipady

cMb.

wood

lloors.

stilted

wlh

peoptt

IAPGF

RFVERB

SOOOseal

Concert

Hal.

hard

backwal.

aflemoon

sound

check.

IAPOC

ncvtnB

CO0dv»al

Concert

Mol.

SOO

at

bock

Ml,

sold

oul

Bhow

LARGE

REVERB

«).003

seal

round

SJadum.

atlernoon

sound

check,

one

hundred

crew

&

VIPs

only.

SPECIAL

REVERB

SJudro

EMecl

-

Engineer

cuts

c«

rc/ort)

sightly

aTer

each

role.

(220ms

Gale)

SPECIAL

REVERB

audio

Efted

-

Engineer

Isis

note

mg.

then

cuts

I

oil.

(3SCms

Galo)

SPECIAL

REVEH8

audio

Filed

-

SmuMes

Sludo

Steel

PBte

Revet).

SPECIAL

REVERB

Simuhles

DkTIasfacned

muU-sprtng

lube

reverb

uni

_

DEI

AY

l?Srm

dotty

ptes

smel

reverb

Fl/ta’

favorite

delay

ptes

sirol

rcvorb.

RockoWy

ppociaL

5671TB

doay

Ofjy

630

travel

lime

o(

sound.

85ms

delay

wfh

14

2%

regerwralion

&

smalrovob

65ms

delay

wih

27

3%

regeneration.

delay

wlh

21

.

8

%

rcgoooraton

*

small

reverb.

335rre

delay

win

125%

'©generator

dotty

wlh

26.5%

-egeoeraton

8

smal

revert)

335rr»

dotty

wlh

437%

'egeoeraton

485m>

dotty

wlh

7.8%

regonorulion.

465ok

detty

win

20.3%

rogoncrafion

485HB

detty

win

392%

regeneraeon

6

smal

revert)

SPECIAL

EFFECT

I

506ms

detty

wlh

over

90%

regeneration

SPECIAL

EFFECT

33ms

based

sound

tatlener

al

selected

'roqumcios

SPECIAL

EFFECT

Muletuckener

wlh

some

suMe

delays

added

SPECIAL

EFFECT

'Backward*

masking’

ortocl

(nun*er

one.

rvjmber

nine,...)

fltfl/C

GT-80D5P

QuadraDrive"

ABOUT

THE

DIGITAL

SO

UND

PRO

CE

S

SOR

:

(Semi-)

Technical

Description:

"IVhatis

reverb,

anyway?"

Imagine

yourself

seated

in

a

small,

lightly

furnished

room,

about

to

enjoy

a

private

performance

by

your

favorite

guitarist.

The

guitarist

picks

up

an

acoustic

guitar

and

sharply

strikes

a

single

chord,

then

immediately

mutes

the

strings

with

his

strumming

hand.

Sound

wavos

instantaneously

travel

from

the

guitar's

sound

hole

through

the

air

to

you

ears,

where

your

brain

processes

the

waves

into

the

musical

sounds

you

krow

so

well.

At

the

same

time,

reflected

sound

waves

are

bouncing

all

around

the

room:

off

the

walls,

ceiling

and

floor,

off

of

the

musician,

off

of

you;

off

of

everything

in

the

room.

These

multiple

reflections

occur

so

fast

and

in

such

large

num¬

bers

that

your

ears

perceive

them

as

one

sound:

reverb.

Without

these

reflections

the

sound

irom

the

guitar

would

seem

lifeless,

dry

and

unnatural.

Different

rooms

produce

different

reflections,

thus

producing

different

sounding

reverbs.

The

same

gui¬

tarists

singfe-chord

performance

in

a

large

concert

hall

would

sound

different

than

it

did

in

the

intimate

surround¬

ings

described

above,

due

to

the

different

reflections

produced

-

thus,

the

dfferent

sounding

reverb.

Wliat

can

be

produced

by

nature

can

be

simulated

through

the

use

of

the

GT

SODSP's

highly

sophis¬

ticated

digital

electronics

circuitry.

The

GT-80DSP

has

many

different

reverbs

available,

as

well

as

some

unique

digital

effects,

not

found

in

nature.

10