Sansui SE-99 Provozní pokyny stáhnout pdf (Strana 12)

COMPENSATE - SOUND

SPACE

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EM-99

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RE-99

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-'------------'

Automatic

sound space

compensation

function

This

function

uses

a

computer

to

analyse

the

acoust

ic

chara

cteris-

ti

cs

of

your

listening

room

including

the

frequen

cy

cha

r

acterist

ics

of

y

our

stereo

system,

and

automatically

creates an equalizer curve

of

the

reverse

cha

r

acte

ristics

,

resulting

in a

flat

frequency

response

.

Measu

re

the acoustic characteristics

of

your listening room

as

fo

ll

ows

.

1. Insert

th

e plug of

the

remote

control

microphone

(

or

condenser

microphone)

into

the

MIC

jack

, and set

the

power

sw

i

tch

to

ON .

2. Set

the

microphone

at

the

listening

point

so

that

it

fac

es a poi

nt

mid-way

between

the

l

eft

and

right

speaker

systems

.

3. Set the volume control

of

the amplifier

to

the normal listening level.

4. Press

the

light

pen

against

the

COMPENSATE SOUND SPACE in-

dicator

and press

the

switch

.

or

press

the

COMPENSATE SOUND

SPACE

button

on

the

remote

contro

l

microphone

. The COMPEN-

SATE SOUND SPACE

indicator

will

flash .

5. The

line

input

will

be

automatically

cut

off

. and pink noise w ill be

emitted

first

from

the

left

speaker

system.

The level

of

the

pink

nois

e

will

be

low

at

first.

then

gradually in-

crease

until

it

reaches

the

necessary level

for

measurement

.

At

this

point

. the

pink

noise

will

be.

emitted

'

five

times

in

0.4

second

bursts

at

intervals

of

0.5

seconds.

Measure

thi

s pink noise

using

the

microphone,

and take

the

aver-

age

of

the measured values

as

the

characteristics

of

your

list

en-

ing room.

If

the

necessary level

for

measurement is

not

obtained even

when

the

output

level

of

the

pink

noisse is

maximum

,

the

UNDER

LE

V-

EL

indicator

will

flash, and an

electronic

tone

will

be

emitted

.

In

this

case, increase the

setti

ng

of

the

vo

lume

control

on

the

am-

plifier.

6 . Next, measurement

of

the

right channel

will

take place in the same

way.

7. The reverse characteristics

of

the averaged sound space frequen

cy

characteristics

will

be

automatically

memorized as

flat

data in

the

flat

memory

circuit. and

the

co

rresponding equalizer

curve

will

be

set.

At

this

time,

the

FLAT

i

ndicator

will

light

.

The memorized

flat

data

can be recalled

by

pressing the

light

pen

against

the

FLAT

indicator

and pressing

the

switch,

or

by

press-

ing

the

FLAT

button

on

the

remot

e

cont

rol

microphone.

When

this

is done. the FLAT

indicator

wi

ll

light.

00

not

perform sound space compensation at the

lowe

st frequency

of

16

Hz

and the highest frequency

of

32

kHz. Set these frequen-

cies

to

0 dB. This is because for a normal listening room and speak-

er

system

there

is a danger

of

destroying

the

woofer

and

tweeter

if an

attempt

is made

to

perform

compensation

at

these fre-

quencies.

If

the

deviation

in level

between

each band is

within

12

dB, set

the

flat

data in 1 dB

steps

(±6

dB), and

if

the

deviation

exceeds

this

value, set

the

flat

data

in 2 dB

steps

(±

12

dBI.

If

the

deviation

exceeds

24

dB

(±

12 dB). the FLAT

indicator

will

flash

for

10

seconds.

indicating

that

the

compensated

frequency

characte

r

ist

ics are

not

perfectly

flat.

however

the

set data

will

be

memorized

as

flat

data.

The

flat

data witl be retained in

the

flat

memory

circuit

until

the

next

sound

space

measurement

is

performed.

To

inter

rupt

measurement

. press

the

light

pen

against

th

e RESET

i

ndicator

and press

the

sw

it

ch.

or

press

the

RESET

button

on

the

remote

control

microphone.

Remember

always

to

set

the

power

switch

to

OFF

after

.

having

used the

microphon

e.

•

Note

that

if

there

is

external

noise

or

air

conditioning

noise, ac-

curate

data

cannot

be

created.

If

the

magnitude

of

the

noise is large.

measurement

may

some-

times

be

impossible

.

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