Kenwood KAC-848 Bedienungsanleitung

KAC-848

KAC-748

4-CHANNEL

POWER

AMPLIFIER

►

Page

2-11

INSTRUCTION

MANUAL

AMPLIFICATEUR

PUISSANCE

CANAUX

►

Page

12-21

MODE

D’EMPLOI

AMPLIFICADOR

POTENCIA

CANALES

►

Page

22-31

MANUAL

INSTRUCCIONES

KENWOOD

CORPORATION

Take

the

time

read

through

this

instruction

manual.

Familiarity

with

installation

and

operation

procedures

will

help

you

obtain

the

best

performance

from

your

new

power

amplifier.

For

your

records

Record

the

serial

number,

found

the

back

the

unit,

the

spaces

designated

the

warranty

card,

and

the

space

provided

below.

Refer

the

model

and

serial

numbers

whenever

you

calUipon

your

KENWOOD

dealer

for

information

service

the

product.

Model

KAC-848/748

Serial

number_

PRINTED

USA

B64-1350-00

(KM)

Safety

precautions

AWARDING

prevent

injury

fire,

take

the

following

precautions:

•

When

extending

the

ignition,

battery,

ground

wires,

make

sure

use

automotive-

grade

wires

other

wires

with

5mm

(AWG10)

prevent

wire

deterioration

and

damage

the

wire

coating.

•

prevent

short

circuit

never

put

leave

any

metallic

objects

(such

coins

metal

tools)

Inside

the

unit.

•

the

unit

starts

emit

smoke

strange

smells,

turn

off

the

power

immediately

and

consult

your

Kenwood

dealer.

•

not

touch

the

unit

during

use

because

the

surface

the

unit

becomes

hot

and

may

cause

burns

touched.

acauti6n~

prevent

damage

the

machine,

take

the

following

precautions:

•

sure

the

unit

connected

12V

power

supply

with

negative

ground

connection.

•

not

open

the

top

bottom

covers

the

unit.

•

not

install

the

unit

spot

exposed

direct

sunlight

excessive

heat

humidity.

Also

avoid

places

with

too

much

dust

the

possibility

water

splashing.

•

When

replacing

fuse,

only

use

new

one

with

the

prescribed

rating.

Using

fuse

with

the

wrong

rating

may

cause

your

unit

malfunction.

•

prevent

short

circuit

when

replacing

fuse,

first

disconnect

the

wiring

harness.

NOTE

•

you

experience

problems

during

installation,

consult

your

Kenwood

dealer.

•

the

unit

does

not

seem

working

right,

consult

your

Kenwood

dealer.

Cleaning

the

unit

the

front

panel

gets

dirty,

turn

off

the

power

and

wipe

the

panel

with

dry

silicon

cloth

soft

cloth.

ACAUnONH

not

wipe

the

panel

with

hard

cloth

dampened

volatile

solvents

such

paint

thinner

and

alcohol.

They

can

scratch

the

surface

the

panel

and/or

cause

the

indicator

letters

peel

off.

FCC

WARNING

This

equipment

may

generate

use

radio

frequency

energy.

Changes

modifications

this

equipment

may

cause

harmful

interference

unless

the

modifications

are

expressly

approved

the

instruction

manual.

The

user

could

lose

the

authority

operate

this

equipment

unauthorized

change

modification

made.

Accessories

Part

name

External

View

Number

Items

Terminal

cover

(Power

terminal)

<$§£>

Self-tapping

screws

(o4

mm)

@Em>

Protection

function

This

unit

equipped

with

protection

function

for

protecting

this

unit

and

your

speakers

from

various

accidents

problems

that

can

occur.

When

the

protection

function

triggered,

the

Power

indicator

goes

off

and

the

amplifier

stops

operating.

■

Power

indicator:

When

the

power

turned

on,

the

Power

indicator

lights.

the

Power

indicator

does

not

light

when

the

power

turned

on,

the

protection

function

may

activated.

Check

whether

there

any

indication

trouble.

■

The

protection

function

activates

the

following

situations:

•

When

speaker

wire

may

short-circuited.

•

When

speaker

output

contacts

ground.

•

When

the

temperature

internal

parts

exceeds

120°C

(248°F).

•

When

ground

wire

the

center

unit

(cassette

receiver,

etc.)

this

unit

not

connected

metal

part

serving

electrical

ground

passing

electricity

the

battery's

negative

terminal.

English

Power

indicator

Installation

procedure

Remove

the

ignition

key

and

disconnect

the

negative

terminal

the

battery

prevent

short

circuits.

Set

the

unit

according

the

intended

usage.

Connect

the

input

and

output

cables

the

units.

Connect

the

speaker

wires.

Connect

the

power

wire,

power

control

wire

and

grounding

wire

following

this

order.

Install

the

unit

the

car.

Connect

the

negative

terminal

the

battery.

ACAUTION

•

sure

turn

the

power

off

before

changing

the

setting

any

switch.

•

the

fuse

blows,

check

wires

for

shorts,

then

replace

the

fuse

with

one

the

same

rating.

•

Check

that

unconnected

wires

connectors

are

touching

the

car

body.

not

remove

caps

from

unconnected

wires

connectors

prevent

short

circuits.

•

Connect

the

speaker

wires

appropriate

speaker

connectors

separately.

Sharing

the

negative

wire

the

speaker

grounding

speaker

wires

the

metal

body

the

car

can

cause

this

unit

fail.

•After

installation,

check

that

the

brake

lamps,

winkers,

and

wipers

work

properly.

Installation

Self-tapping

screw

(04

mm)

Installation

board,

etc.

(thickness

more)

Since

the

power

amplifier

has

parts

which

require

operation,

can

installed

position

away

from

the

driver's

seat

without

any

hindrances.

generally

accepted

positions

for

its

installation,

places

such

inside

the

trunk,

etc.

can

considered.

Use

the

extension

cables.

(Optional.)_

---

0.5m

RCA

cable

CA-2SL

CA-12SL

CA-22SL

CA-52SL

RCA

cable

(07mm)

CA-3WL

CA-13WL

CA-23WL

—

CA-53WL

RCA

cable

(0l2mm)

CA-5W

CA-15W

CA-25W

CA~45W

CA-65W

ACAUTION

•

not

install

the

unit

under

the

carpet.

Otherwise

heat

build-up

occurs

and

the

unit

may

damaged.

•

Install

this

unit

location

which

allows

heat

easily

dissipate.

Once

installed,

not

place

any

object

top

the

unit.

•

The

surface

temperature

the

amplifier

will

become

hot

during

use.

Install

the

amplifier

place

where

people,

resins,

and

other

substances

that

are

sensitive

heat

will

not

come

into

contact

with

it.

•

When

making

hole

under

seat,

inside

the

trunk,

somewhere

else

the

vehicle,

check

that

there

nothing

hazardous

the

opposite

side

such

gasoline

tank,

brake

pipe,

wiring

harness,

and

careful

not

cause

scratches

other

damage.

•

not

install

near

the

dashboard,

rear

tray,

air

bag

safety

parts.

•

The

installation

the

vehicle

should

securely

fasten

the

unit

place

which

will

not

obstruct

driving.

the

unit

comes

off

due

shock

and

hits

person

safety

part,

may

cause

injury

accident.

•

After

installing

the

unit,

check

make

sure

that

electrical

equipment

such

the

brake

lamps,

turn

signal

lamps

and

windshield

wipers

operate

normally.

...

English

Controls

This

channel

amplifier

including

stereo

amplifiers

body.

One

amplifier

referred

amplifier

and

the

other

amplifier

This

unit

compatible

with

large

variety

systems

combining

the

switches

and

functions

described

the

following.

Fuse

(20

KAC-848)

(30

KAC-748)

Battery

terminal

Ground

terminal

Power

control

(REMOTE)

terminal

Amplifier

speaker

output

terminals

Amplifier

speaker

output

terminals

English

❖

SPEAKER

OUTPUT

terminals

•

Stereo

Connections:

When

you

wish

use

the

unit

stereo

amplifier,

stereo

connections

are

used.

The

speakers

connected

should

have

impedance

greater.

When

multiple

speakers

are

connected,

ensure

that

the

combined

impedance

greater

for

each

channel.

•

Bridged

Connections:

When

you

wish

use

the

unit

high-

output

monaural

amplifier,

bridged

connections

are

used.

(Make

connections

the

LEFT

channel

(+)

and

the

RIGHT

channel

(-)

SPEAKER

OUTPUT

terminals.)

The

speakers

connected

should

have

impedance

4£1

greater.

When

multiple

speakers

are

connected,

ensure

that

the

combined

impedance

greater.

ACAUTION

The

rated

input

the

speakers

should

less

than

the

maximum

output

the

amplifier.

Otherwise

malfunction

may

result.

Speaker

level

input

terminals

(KAC-748

only)

FREQUENCY

control

When

the

FILTER

switch

set

the

HPF

(High-Pass

Filter)

LPF

(Low-Pass

Filter)

position,

the

threshold

frequency

can

adjusted

with

this

control.

FILTER

switch

High-pass

low-pass

filtering

can

applied

the

speaker

output

according

the

setting

this

switch.

OPERATION

switch

The

amplification

methods

the

signals

input

amplifiers

and

can

selected

independently

according

the

setting

this

switch.

•

STEREO

position:

The

amplifier

can

used

stereo

amplifier.

•

L+R

position:

The

input

left

and

right

signals

are

combined

before

being

amplified.

Use

this

position

when

the

unit

used

for

subwoofer

speakers

the

L+R

(monaural)

sound

required.

•

MONO

(Lch)

position:

Amplifies

the

signal

input

from

the

left

side

only.

Set

this

position

and

make

bridged

connections

use

high-power

monaural

amplifier.

(The

input

right

signal

not

output.)

INPUT

SENSITIVITY

control

Set

this

control

according

the

pre-output

level

the

center

unit

connected

with

this

unit,

the

maximum

power

output

the

genuine-accessory

car

stereo.

Use

the

diagram

the

right

guide.

KAC-748

only.

NOTE

For

the

pre-output

level

the

maximum

power

output,

refer

the

"Specifications”

the

instruction

manual

the

center

unit.

RCA

cable

ground

lead

terminal

INPUT

SELECTOR

switch

This

switch

selects

the

input

method

the

signals

amplified

amplifiers

and

GDCB

INPUT

SELECTOR

•

position:

Amplifies

both

the

signals

input

amplifiers

and

•

position:

Amplifies

only

signal

input

amplifier

with

both

amplifiers

and

Amplifier

UNE

terminal

Amplifier

UNE

terminal

LINE

OUT

terminal

These

jacks

output

respectively

the

signals

input

amplifiers

and

They

always

output

the

stereo

signals

regardless

the

position

the

OPERATION

switch.

English

Connection

■

RCA

cable

connection

not

connect

cables

and

leads

both

RCA

cable

input

jacks

and

the

speaker

input

terminals

simultaneously,

for

this

may

cause

malfunction

damage.

RCA

cable

ground

terminal

Left

input

Left

input

RCA

cable

ground

terminal

When

using

RCA

cable

with

ground

lead

attached,

connect

the

ground

lead

this

terminal.

ACAUTION

not

use

this

terminal

for

power

source

grounding.

This

unit

will

damaged

the

power

source

grounding

wire

connected

this

terminal.

■

Speaker

level

input

connection

(KAC-748

only)

Connect

the

unit

inserting

the

connection

between

the

genuine-accessory

car

stereo

and

speakers.

English

•

The

genuine-accessory

car

stereo

shall

have

maximum

power

output

than

•

not

connect

the

speaker

output

leads

from

power

amplifier

(Optional)

the

speaker

input

terminals

this

unit,

for

this

may

cause

malfunction

damage.

•

not

connect

cables

and

leads

both

RCA

cable

input

jacks

and

the

speaker

input

terminals

simultaneously,

for

this

may

cause

malfunction

damage.

•

Connect

the

power

control

lead

power

supply

which

can

turned

ON/OFF

the

ignition

key

switch

(ACC

line).

With

this

connection,

shock

noise

may

generated

when

the

power

the

genuine-accessory

car

stereo

switched

ON/OFF.

■

Speakers

wire

connection

(Stereo

Connections)

(Bridged

Connections)

English

Connection

—

Speaker

Selection

The

rated

input

power

the

speakers

that

are

going

connected

should

greater

than

the

maximum

output

power

(in

Watts)

the

amplifier.

Use

speakers

having

input

power

ratings

that

are

less

than

the

output

power

the

amplifier

will

cause

smoke

emitted

The

impedance

the

speakers

that

are

going

connected

should

greater

(for

stereo

connections),

greater

(for

bridged

connections).

When

than

one

set

speakers

are

going

used,

calculate

the

combined

impedance

the

speakers

and

then

connect

suitable

speakers

the

amplifier.

Examples:

KAC-848

KAC-748

Stereo

Connections

(4£l)

greater

Bridged

Connections

(4£l)

300

greater__

200

greater

200W

(40)

200W"*

(40)

—f

200W:

+JrUj(2£2)

4-,Lrfl200W

T?U

(2n)

£2.*•

200W®

(40)

100W

(80)

100W

(80)

Maximum

output

the

amplifier

Combined

impedance

Rated

input

power

and

impedance

the

speakers

■

Power

wire

connection

AWARNING~|

prevent

fire

caused

short

the

wiring,

connect

fusible

link

breaker

nearby

the

battery’s

positive

terminal.

buzzing

noise

heard

from

the

speakers

when

the

engine

running,

connect

line

noise

filter

(optional)

each

the

battery

wire.

•

not

allow

the

cord

directly

contact

the

edge

the

iron

plate

using

Grommets.

•

Connect

the

ground

wire

metal

part

the

car

chassis

that

acts

electrical

ground

passing

electricity

the

battery’s

negative

terminal.

not

turn

the

power

the

ground

wire

not

connected

•

sure

attach

protective

fuse

into

the

battery

wire

the

battery.

Use

protective

fuse

having

capacity

that

about

higher

than

the

maximum

current

drawn

the

amplifier.

•

Use

vehicle-type

(fire-resistant)

power

supply

wiring

wire

for

the

battery

wire

and

the

ground

wire.

The

current

capacity

the

power

supply

wiring

wire

should

about

higher

than

that

the

protective

fuse

capacity

(which

means

about

higher

than

the

maximum

current

drawn

the

•

When

than

one

power

amplifier

are

going

used,

use

power

supply

wiring

wire

and

protective

fuse

greater

current-handling

capacity

than

the

total

maximum

current

drawn

each

amplifier.

Example:

One

Power

Amplifier

Used

Model

Maximum

Current

Drawn

KAC-848

KAC-748

ross-sectionai

Area

Wire

(AWG)

(AWG

10)

greater

(AWG

10)

greater

‘

Power

terminal

Connect

their

respective

terminals

the

power

control

wire,

power

supply

wire,

and

ground

wire,

all

which

pass

through

the

associated

terminal

cover.

Once

the

connections

are

complete,

place

the

cover

the

terminal

section.

System

examples

Full-range

4-channel

Subwoofer

system

CENTER

UNIT

Switch

setting

5®

“t

StBo'g

l»l

M»f

■

line!

®o

QCHJT;

Amplifier

Front

speaker

Rear

speaker

[Subwoofer

English

(High

pass)**

Subwoofer

(Bridged)

•Principle

Tri-mode

Method

frequency

band

division

using

coil

and

capatftor***in

case

6dB/oct.

slope

Coil

(L):

Passes

low

frequencies

and

blocks

high

frequencies.

(Low

pass)

Capacitor

(Cl:

Passes

high

frequencies

and

blocks

low

frequencies.

(High

pass)

159000

159

fc=Cut

Frequency

(Hz)

R=Speaker

Impedance

(Q)

•

Example:

When

required

set

crossover

frequency

120

using

speakers

with

impedance

ohms

Prepare

commercially-available

coil

and

capacitor

with

the

closest

ratings

the

results

calculated

from

the

formula

above.

The

capacitor

rating

should

possible

331.25

(pF)

and

the

coil

rating

should

possible

5.3

(mH).

•

you

wish

bridge-connect

speaker,

the

speaker

impedance

must

less

than

ohms.

•

Connecting

speaker

with

impedance

lower

than

ohms

may

damage

the

unit.

•

sure

connect

capacitors

speakers

which

high

frequencies

will

passed.

Failure

will

result

drop

the

combined

impedance

with

the

subwoofer.

•

Ensure

that

the

withstand

voltage

and

current

ratings

the

capacitors

<C)

and

coils

(L)

are

sufficient.

English

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