Roland GR-33B Manuel utilisateur

FEATURES

•Any

bassist

can

play

the

GR-33B,

using

ail

standard

bass

techniques,

hammering,

giissandos,

harmonics,

chopping,

bowing,

etc.

•A

small,

compact

unit

(like

effects

box)

with

all

the

electronic-type

foot-controlled

switch

major

functions;

great

for

live

per¬

formances.

•Totally

polyphonic:

one

VCO

for

each

string.

•Instant

and

accurate

transposing

two

preset

pitches.

•A

duet

switch

for

chorus

effect.

•Synthesizer

ON/OFF

for

each

string.

IN!

STANDARD

CONNECTIONS

MIXED

OUTPUT.3

GUITAR

SYNTHESIZER

OUTPUT

BASIC

SETTING.4

PRODUCING

SOUND.

VCF.5

ENVELOPE

GENERATOR.6

VCO

VIBRATO.7

PITCH

SHIFT.8

STRING

SELECTOR

USING

ATTACHMENTS

...10

SAMPLE

SOUNDS.11—13

SAMPLE

NOTES.14—18

SPECIFICATIONS.19

Before

Starting.

•Use

transformer

produce

the

cor¬

rect

line

voltage

the

line

voltage

your

area

does

not

match

the

value

specified

the

nameplate.

•Keep

away

from

fluorescent

lamps,

neon

lights,

and

high-power

transformers

these

will

induce

high

noise

levels

the

Guitar

Synthesizer.

•Avoid

the

use

this

instrument

places

that

are

dusty,

high

temperature

high

humidity.

•Clean

the

control

panel

with

neutral

detergent.

Use

soft,

dry

cloth

for

the

wooden

parts.

not

use

solvents

such

paint

thinner.

•The

GR-33B

Bass

Guitar

Synthesizer

has

been

designed

work

with

the

G-33

G-88

Bass

Guitar

and

will

not

work

with

the

GR-500

and

GR-300.

•The

length

the

sound

may

shorter

than

normal,

the

synthesized

sound

may

one

octave

higher

than

normal

with

certain

styles

picking

and

stopping

the

strings.

STANDARD

CONNECTIO

GUITAR

CONNECTIONS

Connect

the

G-33

G-88

shown

the

drawing

using

the

chrome

guitar

con¬

nector.

The

connector

keyed

and

must

inserted

correctly

(lock

lever

up)

for

proper

fit.

(The

NORMAL

OUTPUT

jack

the

Bass

Guitar

not

connected

the

Bass

Guitar

Synthesizer.)

When

there

connection

the

BASS

GUITAR

OUTPUT

jack

the

rear

panel

the

Bass

Guitar

Synthesizer,

the

output

the

MIX/SYNTH

jack

consists

equal

mixture

the

guitar

and

synthesizer

sounds.

When

both

output

jacks

are

used,

the

out¬

puts

are

separated

with

the

bass

guitar

sound

the

OUTPUT

jack

and

the

synthe¬

sizer

sound

the

MIX/SYNTH

jack.

These

separate

outputs

can

passed

through

separate

effects

devices

and

amplifiers

for

stereo

sound.

PRODUCING

SOUND

Set

the

controls

shown

the

left.

Set

the

external

amplifier

volume

the

min¬

imum

level

and

turn

all

the

power

switches.

Turn

the

volume

control;

play¬

ing

the

bass

guitar

should

produce

the

bass

guitar

sound.

needed,

tune

the

Bass

Guitar

exactly

the

same

way

ordinary

electric

bass

turned.

produce

the

synthesizer

sound,

The

sound

produced

now

the

unpro¬

cessed

sound

from

the

synthesizer

VCO’s

(voltage

controlled

oscillators).

The

VOICE

SELECT

switch

the

DUET

position,

adds

the

fundamental

pitches

the

bass

guitar

strings

the

VCO

sounds

produce

chorus

effect.

necessary

tune

the

VCO’s

using

the

MASTER

TUNNING,

controls

that

they

match

the

pitches

the

strings.

For

accurate

tuning

use

least

ten

minutes

for

warm-up

period

after

first

turn

the

power

switch.

Turn

the

BALANCE

control,

counterclock¬

wise

increase

the

normal

bass

guitar

sound.

Setting

the

BALANCE

CONTROL,

"0”,

will

produce

the

normal

bass

guitar

sound

only.

USING

THE

VCF

Let's

try

the

VCF

(voltage

controlled

filter)

section

next.

Set

the

BALANCE

control

‘‘10’’.

Try

slowly

lowering

the

Bass

Guitar

CUTOFF

FREQ

control

“0”.

Note

that

the

sound

becomes

softer

with

fewer

harmonics.

The

purpose

the

VCF

control

the

tone

color

the

synthesizer

sound.

Next,

raise

the

Bass

Guitar

RESONANCE

con¬

trol

little

time

while

trying

different

positions

the

CUTOFF

FREQ

control.

This

produces

electronic

type

sound

usually

associated

with

synthesizers.

The

two

controls,

CUTOFF

FREQ

and

RESO¬

NANCE

combine

control

the

tone

color

the

sound

passing

through

the

VCF.

*VCF

Filter

Mode

This

switch

changes

the

roll-off

character¬

istics

the

VCF,

either

-12dB/OCT

-24dB/OCT,

and

controls

the

envelope

modulation

the

VCF.

DUET

VCD

TUNES

VCO’S

9.10

■

CUTOFF

FREQ

RESONANCE

foot

volume

pedal

(Roland

FV-20;

sold

separately)

connected

the

VCF

PEDAL

jack

the

rear

panel,

the

VCF

cutoff

frequency

(in

other

words,

the

tone

color

the

output

sound)

can

controlled

manual

with

your

foot.

Raise

the

ENV

MOD

control

maximum.

Set

the

RESONANCE

control

“4”,

and

the

CUTOFF

control

“8”.

While

repeatedly

picking

string,

try

pressing

the

VCF

MOD

foot

switch.

this

mode

operation,

the

filtering

action

the

VCF

controlled

the

picking

the

bass

guitar

strings

instead

manually,

before

produce

“WOW”

sound.

The

LED’s

for

the

VCF

MOD

light

when

the

effect

ON,

and

flicker

when

the

ef¬

fect

OFF.

The

depth

the

modulation

determined

the

VCF

MOD

knob.

Try

slowly

lowering

the

VCF

MOD

control

“0”.

ENVELOPE

GENERATOR

Set

the

ENV

MOD

“MAX”,

and

ENV

GEN

“A”,

ATTACK

knob

“MIN”

and

DECAY

“MAX”.

Try

picking

one

the

strings

and

raising

the

ATTACK

control.

This

causes

the

raising

(attack

time)

the

“WOW”

sound

become

longer.

Set

the

ENV

GEN

“A”

ATTACK

knob

“MIN”

and

DECAY

“MIN”.

Try

picking

one

the

strings

and

with

raising

the

DECAY.

The

envelope

generator

generates

control

voltage

with

time

according

the

control

settings.

This

control

voltage

used

control

the

VCF

cutoff

frequency

point

vary

the

tone

color

during

the

production

note,

and/or

used

control

the

VCA

give

the

output

sound

its

loudness

contour.

ATTACK

knob

controls

the

amount

time

which

required

for

the

voltage

reach

its

maximum

level.

This

called

attack

time.

DECAY.

knob

controls

the

amount

time

required

for

voltage

fall

the

level.

This

time

called

decay

time.

CUTOFF

FREQ.

CUTOFF

FOEQ

CUTOFF

FREQ

CUTOFF

FREQ

AAA

RESONANCE

—18

VCF

FILTER

MODE

MIN

MAX

ENV

MOO

EIUVGEIM

MtN

MAX

ATTACK

VIlN

MAX

DECAY

T/iaj

ATTACK

min

max

DECAY

VCF

MOO

EIMVA/B-

The

Envelope

Generator

has

two

chan¬

nels,

and

both

with

the

same

func¬

tion.

Controls

are

provided

for

attack

and

decay,

and

the

selected

envelope

curve

can

used

for

modulating

the

VCF

the

VCA.

Channel

may

selected

foot

switch.

impossible

use

the

different

envelopes

for

both

the

VCF

and

the

VCA.

The

LED

indicates

which

chan¬

nel

has

been

selected.

When

the

power

source

turned

ON,

automatically

selected.

VCO

VIBRATO

Next,

let’s

try

different

ways

modulating

controlling

the

VCO’s.

First

vibrato,

which

slight

wavering

pitch.

Vibratos

can

produced

the

normal

bass

guitar

way

using

the

finger

vary

the

tension

the

string,

can

produced

elec¬

tronically

for

wide

number

effects.

Set

the

VIB

DEPTH

(vibrato

depth)

knob

the

Bass

Guitar

"10”.

This

may

not

produce

the

vibrato

effect,

not,

touch

the

upper

metal

end

(Touch

Plate

the

divided

pickup

the

Bass

guitar

turn

the

vibrato

effect

ON.

turn

OFF,

touch

the

opposite

end

(Touch

Plate

the

pickup.

The

vibrato

will

decay

slowly

after

releasing

the

touch

plate.

With

the

vibrato

ON,

try

various

positions

for

both

the

VIB

DEPTH

control

the

Bass

Guitar

and

the

LFO

RATE

(LFO

low

frequency

oscillator)

and

the

LFO

DELAY

control

the

Bass

Guitar

Synthesizer

and

note

the

effects.

VIB

DEPTH

controls

the

depth

the

vibrato

effect

and

the

LFO

RATE

controls

the

speed

the

vibrato.

The

LFO

DELAY

control

determines

the

delay

time

the

delay

vibrato.

VCAMC

INDICATOR

*3*

MODULATION

SWITCH

23—31

LFO(VIB)DEPTH

-TOUCH

PLATE

Turns

the

VIBRATO

effect

on.

-TOUCH

PLATE

Turns

VIBRATO

effect

OFF,

for

touch-Vibrato.

SLOW

FAST

Mirvj

MAX

RATE

DELAY

The

electronic

vibrato

affects

only

the

VCO’s.

the

DUET

mode,

the

combina¬

tion

the

non-vibrato

fundamental

strings

pitches

with

the

vibrato

VCO

pitches

pro-

dues

the

chorus

effect

sound.

The

Bass

Guitar

OWNER’S

MANUAL

con¬

tains

additional

information

the

vibrato

ON/OFF

function.

PITCH

SHIFT

Another

VCO

effect

pitch

shift,

effect

where

the

VCO’s

can

shifted

pitches

other

than

the

string

pitches.

Set

the

VOICE

SELECT

switch

the

“DUET”,

the

fundamental

pitches

will

the

same

the

string

pitches,

and

the

VCO’s

can

tuned

other

pitches

that

one

instru¬

ment

produces

the

effect

very

large

group.

Set

the

Bass

Guitar

Synthesizer

and

Bass

Guitar

for

the

standard

settings

shown

page

but

with

the

BALANCE

control

fully

clockwise.

Press

the

PITCH

“A”

foot

switch

and

take

note

the

LED

above

the

switch

and

the

LED

above

the

switch

lights.

While

producing

sound,

try

tuning

the

PITCH

“A”

knob

and

down

and

note

that

this

now

controls

the

VCO

pitches.

Try

tuning

the

VCO’s

perfect

octave

below

the

fundamental

string

pitch.

For

this,

the

PITCH

“A”

knob

will

set

somewhere

near

“

-3”.

Next,

try

PITCH

“B”

pressing

the

PITCH

“B”

foot

switch

and

adjusting

the

PITCH

“B”

knob

produce

the

interval

major

fifth

the

fundamental.

The

VCO

tuning

can

now

switched

in¬

stantly

and

accurately

between

these

two

preset

pitches

and

unison

pressing

the

appropriate

PITCH

foot

switch.

Pressing

PITCH

“A”

produces

the

“A”

tuning;

pressing

again

cancels

the

“A”

tuning.

Pressing

PITCH

“B”

produces

the

“B”

tuning,

and

pressing

again

cancels

it.

possible

switch

from

“A”

“B”

from

“B”

“A”

without

passing

through

unison

merely

pressing

the

new

pitch

foot

switch.

The

UNLATCH/LATCH

switch

below

each

PITCH

knob

controls

the

latching

function

the

PITCH

foot

switch.

LATCH,

the

pitch

change

function

will

alternate

between

the

foot

switch

described

the

preceding

paragraph.

UNLATCH,

the

tuning

function

will

only

while

the

foot

switch

held

down

and

OFF

when

released.

STRING

SELECTOR

When

using

the

bass

guitar

and

synthe¬

sizer

sounds

simultaneously

(Bass

Guitar

BALANCE

control

somewhere

near

center),

the

STRING

SELECT

switches

can

used

determine

which

strings

are

produce

the

synthesizer

sounds.

There

are

four

switches,

one

for

each

string.

Only

those

switches

that

are

will

produce

synthesizer

sounds.

These

switches

can

used

where

desired

play

melody

bass

line

against

guitar

chords,

for

example,

for

other

ef¬

fects

where

the

synthesizer

notes

are

relatively

independent

the

bass

guitar

notes.

When

playing

the

arpeggio

with

the

VCF

and

VCA

modulation

on,

the

string

the

first

sound

still

vibrating

when

the

sec¬

ond

note

played,

the

sound

the

first

note

will

affected.

this

effect

not

desired,

play

the

string

the

second

note

after

the

vibrations

the

string

the

first

note

have

been

stopped.

•USING

ATTACHMENTS

Attachments

can

connected

between

the

Guitar

Synthesizer

and

the

external

amplifier.

Since

the

GR-33B

synthe¬

sizer,

try

devices

designed

for

use

with

synthesizers,

such

phase

shifters,

flangers,

chorus

and

echo

machines.

GR-33B

SPV-355

When

solo

type

synthesizer

sound

desired,

try

the

Roland

P/V

Synthesizer

SPV-355.

Use

the

NORMAL

OUTPUT

the

Bass

Guitar,

use

the

GUITAR

OUT¬

PUT

FROM

THE

GR-33B.

ECHO

CHAMBER

psSsaj

ANALOG

ECHO

PHASER

™

FLANGER

sbf

“

CHORUS

EQUALIZER

REVERB

P/V

SYNTH

■

Vff

5^pS^§sf

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