Yamaha GQ1031 GQ1031 Owners Manual Image - Page 4

CONTROLS

&

CONNECTIONS

•

FRONT

PANEL

O

YAMAHA

INPU

GRAPHIC

EQUALIZER

GQ

RBI

NEAR

lo

—

O

LEVEL

20

i0

25

40

50

63

80

100

125

.0

70

0

250

315

400

500

630

800

1

k

1

5x

162k

zsx

31sk

5k

6

3k

8k

ID

2

5

.k

20kHz

POWER

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—

3

c)

111[111

—

—

9tle

.

I

...ON

OE

,

•

REAR

PANEL

C)

®

CAUTION

TO

PREVENT

ELECTRIC

.0,

00

WARNING:

To

REDUCE

D. VP,

,

NOT

REMOVE

VW

SCREWS

NO

USENSERVICCANI

nnE

OR

SLESTRIC

NOCK

DO

NOT

EXPOSS

(t)S

YAMAHA

GRAPHIC

EQUALIZER

CO

e

®

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,

INSICS

RFEELL

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SERV,

PERSONNEL

ATTENTION

-

Ant,

.

PREEMIE

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IS

APPLIANCE

IO

RAIN

OR

SIONTURE

MO

0

DEL

00.31

12

60Hz

CO.,

LTD.

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PPS

ENLEVER

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INPUT

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grAWAr

O

U.S.

&

Canadian

models

Voltage

Selector

(General model

only)

0

POWER

Switch

Press

this

switch

to

turn

AC

power

to

the

equalizer

ON.

The

POWER

indicator

lamp

located

above

the

POWER

switch

will

light

to

indicate

that

power

is

ON.

Press

a

second

time

to

turn

power

OFF.

NOTE:

The

GQ1031

incorporates

a

special

power

-on

surge

protection

system

which

bypasses

the

equalizer

cir-

cuitry

for

approximately

2

seconds

after

power

is

turned

ON,

even

if

the

EQ

switch

is

ON

(see

"EQ

Switch"

below).

0

EQ

Switch

This

switch

determines

whether

the

equalizer

circuitry

is

on

or

bypassed

—that

is,

whether

the

input

signal

is

routed

through

the

EQ

circuitry

or

directly

to

the

output,

"bypassing"

the

equalizer

circuitry.

The

EQ

indicator

LED

above

the

EQ

switch

will

light

when

the

EQ

circuitry

is

ON.

This

switch

is

useful

for

comparing

the

equalized

and

unequalized

signal.

0

INPUT

LEVEL

Control

and

PEAK

Indicator

This

control

sets

the

sensitivity

of

the

equalizer's

input

stage,

permitting

optimum

level

matching

with

a

wide

range

of

sources.

With

the

INPUT

LEVEL

control

set

at

maximum

its

position

("10"

on

the

scale)

the

nominal

input

level

of

the

GQ1031

is

—10dB

—

this

produces

a

—10dB

output

level

—

and

the

maximum

input

level

is

+20

dB,

producing

a

+20

dB

output.

The

INPUT

LEVEL

control

can

be

used

to

increase

or

decrease

the

equalizer's

input

sensitivity,

permitting

input

of

signals

that

are

higher

or

lower

than

the

rated

level.

The

maxi-

mum

output

level

of

the

GQ1031

is

+20dB,

however,

the

PEAK

indicator

LED

lights

when

the

equalizer's

output

level

reaches

or

exceeds

+17

dB,

warning

of

overload

distortion.

Since

equalizing

a

signal

can

also

affect

its

overall

level,

the

OUT

0

O

OUT

INPUT

LEVEL

control

can

also

be

used

to

match

the

levels

of

the

equalized

and

bypassed

(unequalized

sound).

With

proper

equalization

technique,

however,

this

should

not

be

EQUALIZER

necessary.

INPUT

0

—ere,

0

OUTPUT

I

IN

CIRCUITRY

IN

•

L

E0

Switch

in

"

IN

"

position

3

Yamaha GQ1031 GQ1031 Owners Manual Image - Page 4

Controls, Connections

Page 4 highlights