Sony Xec-1000 User manual

SONY

3-750-401-22

(1)

Electronic

Crossover

Network

XEC-1000

Cperating

Instructions

page

2

Before

using

the

unit,

please

read

this

manual

thoroughly

and

retain

it

for

future

reference.

Cwner’s

Record

The

model

and

serial

numbers

are

located

on

the

bottom

of

the

unit.

Record

the

serial

number

in

the

space

provided

below.

Refer

to

these

numbers

whenever

you

call

upon

your

Scny

dealer

regarding

this

product.

Model

No.

XEC-1000

Serial

No.

Mode

d’emploi

page

16

Avant

la

mise

en

service

de

cet

appareil,

pridre

de

lire

attentivement

ce

mode

d’emploi

que

I’on

conservera

pour

toute

référence

ultérieure.

Foreword

uF]

0)

(=e)

mere)

ay

(s)

8)

tS

The

XEC-1000

is

an

Electronic

Crossover

Network

with

which

you

can

install

various

types

of

muiti-amplifier

systems

in

a

car.

The

XEC-1000

Is

to

be

used

with

high

quality

power

amplifiers

and

speakers

in

a

multi-amplifier

system

for

hi-fi

(high

fidelity)

sound

reproduction.

The

XEC-1000

employs

linear

phase

active

filters

(Bessel

function

type}

with

which

the

group

delay

of

the

audio

signals

can

be

kept

constant

from

the

filter

passbands

to

crossover

frequencies

even

if

the

filters

provide

high

rejection

above

and

below

their

passband

frequencies.

Because

of

this,

you

will

be

satisfied

with

hi-fi

sound

particularly

between

the

low

and

mid-iow

audio

frequency

tanges

and

the

richness

of

bass

sound.

In

addition,

the

XEC-1000

provides

maximum

flexibility

to

configure

every

possible

multi-

amplifier

car

stereo

system.

Before

designing

and

instatling

your

system,

please

read

this

manual

thoroughly

so

that

you

can

set

up

the

system

that

practicaily

suits

you.

Having

the

XEC-1000

in

the

center

of

your

multl-amplifler

car

stereo

system,

your

car

stereo

system

will

provide

you

with

the

ultimate

in

hi-fi

reproduction.

INFORMATION

This

equipment

generates

and

uses

radio

frequency

energy

and

if

not

installed

and

used

properly,

that

is,

in

strict

accordance

with

the

manufacturer's

instructions,

may

cause

interference

to

radio

and

television

reception.

It

has

been type

tested

and

found

to

comply

with

the

limits

for

a

Class

B

computing

device

in

accordance

with

the

specifications

in

Subpart

J

of

Part

15

of

FCC

Rules,

which

are

designed

to

provide

reasonable

protection

against

such

interference

in

a

residential

installation:

However,

there

is

no

guarantee

that

interference

will

not

occur

in

a

particular

installation.

If

this

equipment

does

cause

interference

to

radio

or

television

reception,

which

can

be

determined

by

turning

the

equipment

off

and

on,

the

user

is

encouraged

to

try

to

correct

the

interference

by

one

or

more

of

the

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of

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Some

examples

of

system

configuration

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OF

following

measures:

Reorient

the

receiving

antenna

Relocate

the

equipment

with

respect

to

the

receiver

Move

the

equipment

away

from

the

receiver

Plug

the

equipment

into

a

different

outlet

so

that

equipment

and

receiver

are

on

different

branch

circuits.

If

necessary,

the

user

should

consuit

the

dealer

or

an

experienced

radio/television

technician

for

additional

suggestions.

The

user

may

find

the

following

booklet

prepared

by

the

Federal

Communications

Commission

helpful:

“tow

to

identify

and

Resolve

Radio-TV

Interference

Problems”.

This

booklet

is

available

from

the

U.S.

Government

Printing

Office,

Washington,

OC

20402,

Stock

No.

004-000-00345-4.

Features

©

*

Linear

phase

filters

(Bessel

function

type)

ceail;e

natural

and

equal

sound

levels

in

and

around

the

passband

frequency.

¢

Hi-fi

atectrolytic

capacitors

especially

designed

for

dynamic

sound

reproduction

¢

Phase

inversion

switches

for

checking

easily

a

sound

continulty

between

mid

and

high

tang

speakers

©

180

Hz

mid

cut

controls

with

Q

switches

for

adjusting

a

low

and

mid-iow

sound

¢

40

Hz

bass

boost

control

for

dynamic

bass

reproduction

*

Linear

phase

filters

(Bessel

function

type}

Most

of

the

channe!

dividers

currently

available

employ

flat

response

filters

(Butterworth

type).

The

group

delay

characteristic

of

this

type

of

filters

is

much

worse

than

that

of

the

linear

phase

filters,

and

this

cauees

transient

distortion

in

the

audio

signais

at

each

fitter’s

crossover

frequency.

To

reduce

that

distortion

and

to

obtain

hi-fi

sound,

linear

phase

oun

function

type)

are

used

for

the

1000.

Precautions

©

This

unit

is

designed

for

negative

ground

12

V

OC

operation

only.

¢

The

nameplate

indicating

operating

voltage,

etc.

is

located

on

the

bottom

exterior.

¢

Avoid

instafling

the

unit

where:

—

It

would

be

subject

to

high

temperatures,

such

as

from

direct

suntight

or

from

hot

air

from

the

heater.

—

It

would

be

exposed

to

rain

or

moisture.

—

It

would

be

subject

to

dust

or

dirt.

©

If

your

car

is

parked

in

direct

sunlight

and

there

is

a

considerable

rise

in

temperature

Inside

the

car,

allow

the

unit

to

coo!

off

before

operating.

©

If

this

unit

is

placed

too

close

to

the

car

radio,

an

interference

may

occur.

In

this

case,

separate

the

unit

from

the

car

radio.

If

you

have

any

question

or

problem

concerning

your

unit

that

is

not

covered

in

this

manual,

please

consult

your

nearest

Sony

dealer.

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ia

(em

al

¥laceni(e)amel

am

Ore

alice)

is

(1)

SUB-WOOFER

output

level

contro!

[2]

REAR

MID

output

level

contro!

(3)

REAR

HIGH

output

level

contro!

(4)

FRONT

MID

output

level

contro!

(5)

FRONT

HIGH

output

level

contro!

[6)

SUB-WOOFER

crossover

point

selector

[7]

REAR

MID

crossover

point

selector

[§)

REAR

HIGH

crossover

point

selector

[5]

FRONT

MID

crossover

point

selector

(18)

FRONT

HIGH

crossover

point

selector

(i)

SUB-WOOFER

phase

inversion

switch

(i]]

REAR

HIGH

phase

inversion

switch

FRONT

HIGH

phase

inversion

switch

These

switches

invert

an

phase

between

the

speakers.

Use

them

when

you

feel

a

bad

sound

continuity

between

the

mid

and

high

ranges.

(i)

SUB-WOOFER

STEREO/MONO

selector

Set

the

selector

to

MONO

to

make

SUB-

WOOFER

output

monaural.

When

you

use

the

SUB-WOOFER

output

as

monaural,

do

not

set

the

SUB-WOOFER

crossover

point

selector

to

180

Hz.

The

balance

of

sound

reproduction

may

be

affected

if

you

do

so.

[is]

LOW

BOOST

control

Frequencies

around

40

Hz

can

be

boosted

at

the

maximum

of

10

dB.

You

can

choose

whether

the

low

boost

works

towards

SUB-

WOOFER

output

only

or

it

works

towards

botl:

SUB-WOOFER

and

REAR

outputs.

When

you

want

to

make

it

work

only

for

SUB-WOOFER

output,

set

the

switch

located

on

the

left

side

of

the

contro!

to

the

SU8

ONLY

position.

Set

the

switch

to

SUB

&

REAR

when

you

make

it

work

towards

bot)

SUB-WOOFER

and

REAR

outputs.

REAR

MID

CUT

contro!

[f]]

FRONT

MID

CUT

contro!

Frequencies

around

180

Hz

can

be

cut

at

the

maximum

of

~10

dB.

You

can

also

select

*Q

factor

value

(1,

3,

&

with

Q

switch.

*Q(Q

factor

of

resonant

circuits)

In

general,

Q

represents

the

sharpness

of

a

resonant

Circuit

filter.

The

lower

the

Q,

the

more

slowly

the

signal

level

changes

erlang

qarahcierete

pd

moved

away

from

resonance.

As

contrasted

with

this,

the

higher

the

Q,

the

more

quickly

the

signal

level

changes.

In

this

unit,

the

Q

represents

a

mid-cut

frequency

bandwidth.

When

you

set the

Q

switch

toa

higher

value

position,

the

narrower

the

frequency

bandwidth

will

be

selected.

|

Kevorsttiolewr-}a(e

ms

af0is(ortiola

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ice)

is

[is]

SUB-WOOFER

INPUT

selector

When

you

connect

the

head

unit

with

the

sub-woofer

output

connector,

set

the

selector

to

ON.

The

input

signal

from

the

SUB-WOOFER

input

connector

flows

out

to

the

SUB-WOOFER

output

connector.

When

you

use

the

unit

which

has

no

sub-woofer

output

connector

(when

your

unit

is

connected

to

only

FRONT

and

REAR

input

connectors

of

the

XEC-1000),

set

the

selector

to

OFF.

In

this

case,

the

summation

of

the

front

and

rear

input

signals

is

output

from

the

SUB-WOOFER

output

connector.

[13]

FRONT

INPUT

selector

When

you

set

this

selector

to

ON,

the

Input

signal

from

the

FRONT

input

connectors

flows

out

to

the

FRONT

output

connectors.

When

you

set

it

to

the

OFF

position,

the

FRONT

output

signa!

is

to

be

the

REAR

input

signal.

if

your

head

unit

has

only

one

pre-amplifier

output,

set

the

selector

to

the

OFF

position.

This

unit’s

flexibility

is

derived

from

these

two

input

selectors,

for

combination

of

these

selectors

allows

you

to

construct

various

types

of

systems,

regardiess

of

the

number

of

When

you

do

not

use

SUB-WOOFER.

INPUT

or

FRONT

INPUT

Be

sure

to

set

the

SUB-WOOFER

INPUT

selector

or

the

FRONT

INPUT

selector

to

OFF.

Otherwise,

the

unit

may

not

function

weil.

pre-amplifler

output

connectors

that

your

head

unit

has,

the

number

of

the

power

amplifier

you

can

use,

and

so

on.

For

details

on

the

combination

of

input

selectors,

refer

to

the

examples

of

system

configuration

shown

in

the

following

pages

and

to

the

block

diagram.

SUB-WOOFER

Input

connectors

(L/R)

(23)

REAR

input

connectors

(UR)

FRONT

input

connectors

(L/R)}

SUB-WOOFER

output

connectors

(L/R)

REAR

MID

output

connectors

(L/A)

REAR

HIGH

output

connectors

(L/R)

FRONT

MID

output

connectors

{(L/R)

FRONT

HIGH

output

connectors

(L/R)

Some

Examples

of

System

Configuration

This

example

shows

the

system

which

has

five

power

amplifiers,

two

pairs

of

tweeters

and

midranges

mounted

in

the

front

and

rear,

and

two

sub-woofers.

The

head

unit

employed

here

has

three

pre-amplifier

output

connectors

(front,

rear,

sub-woofen.

Even

if

your

head unit

has

only

two

pre-

amplifier

outputs

(front,

rear),

however,

you

can

incorporate

the

unit

into

this

system.

:

When

incorporating

two

pre-amplifier

outputs

;

unit,

set

the

SUB-WOOFER

INPUT

selector

to

the

OFF

position.

You

will

get

ihe

summation

of

the

front

and

rear

signals

from

the

SUB-

WOOFER

output

of

the

XEC-1000.

In

the

case

of

System

1,

set

the

FRONT

INPUT

selector

to

the

ON

position

regardless

of

the

number

of

pre-amplifier

output.

System

2

shows

the

general

4-speaker

system

with

4

amplifiers.

In

this

system,

set

the

SUB-

WOOFER

INPUT

selector

of

the

XEC-1000

to

OFF

and

FRONT

INPUT

selector

to

the

ON

position.

If

you

want

to

get

the

more

powerful

bass

sound

from

the

rear

speakers,

set

the

low

boost

selector

to

the

SUB

&

REAR

position

to

make

the

LOW

BOOST

contro!

work

towards

the

rear

speakers.

For

the

FRONT

and

REAR

crossover

point

selectors,

set

them

to

the

FLAT

position

in

this

system.

This

system

consists

of

three

power

amplifiers,

front

speakers,

rear

speakers,

and

a

sub-woofer.

Head

unit

employed

here

has

only

one

pre-amplifier

output

connector.

When

you

use

one

pre-amplifier

output

unit,

it

should

be

connected

to

the

REAR

input

connector

of

the

XEC-1000.

For

input

selectors,

set

the

FRONT

and

SUB-WOOFER

INPUT

selectors

to

the

OFF

position.

The

result

is

all

outputs

from

the

XEC-1000

are

the

signats

from

the

REAR

input

connector.

Set

the

FRONT

and

REAR

crossover

point

selectors

to

the

FLAT

position.

When

you

incorporate

a

monaural

sub-woofer

into

the

system,

as

shown

in

this

example,

set

the

SUB-WOOFER

STEREO/MONO

selector

to

the

MONO

position.

®

Needless

to

say,

these

examples

are

just

starting

points

for

a

wide

range

of

system

configurations.

There

may

be

many

other

system

designs

depending

on

the

number

of

power

amplifiers,

speakers

and

types

of

your

head

unit.

Sony XEC-1000 User manual

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