Kenwood KAC-626 User manual

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1

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<ENWOOD

POWER

AMPLIFIER

KAC-626

KAG-606

INSTRUCTION

MANUAL

KENWOOD

CORPORATION

©

B64-0775-00

(K)

(MC)

Take

the

time

to

read

through

this

instruction

manual.

-amiliarity

with

installation

and

operation

procedures

will

help

you

obtain

the

best

derformance

from

your

new

power

amplifier.

-or

your

records

2ecord

the

seria!

number,

found

on

the

back

of

the

unit,

in

the

spaces

designated

on

the

warranty

card,

ind

in

the

space

provided

below.

Refer

to

the

model

and

serial

numbers

whenever

you

call

upon

your

<ENWOOD

dealer

for

information

or

service

on

the

product.

Viodel

KAC-626/606

Serial

number

AWARNING

Take

the

following

precautions

to

prevent

ire

and

avoid

personal

injury

:

»

When

extending

the

battery

cable,

or

ground

cable,

use

3mm

(AWG12)

or

larger

automotive

grade

cable

to

avoid

cable

deterioration

or

damage

to

the

covering.

»

Check

that

no

metal

objects

(coins,

tools,

etc.)

are

jeft

inside

the

unit

to

avoid

short

circuits.

»

Jf

you

smell

or

see

smoke,

turn

the

power

off

immediately

and

consult

your

Kenwood

dealer.

>

Do

not

touch

the

unit

during

use

because

the

surface

of

the

unit

becomes

hot

and

may

cause

burns

if

touched.

ACAUTION

|

Take

the

following

precautions

to

keep

‘he

unit

in

proper

working

order.

»

Be

sure

the

unit

is

connected

to

a

12V

DC

power

supply

with

a

negative

ground

connection.

Do

not

open

the

top

or

bottom

cover.

Do

not

install

the

unit

in

places

it

is

exposed

to

direct

sunlight,

high

heat

or

humidity,

water

may

splash

over

it,

or

dust

exists.

—woTE]

If

you

have

difficulty

in

installing

this unit

in

your

vehicle,

contact

your

Kenwood

dealer.

Cleaning

the

unit

e®

lf

the

surface

ts

dirty,

wipe

it

clean

with

a

silicon

cloth

or

soft

dry

cloth

with

the

power

off,

ACAUTION

Do

not

use

hard

cloths

or

paint

thinner,

alcohol,

or

other

volatile

solvents.

These

may

damage

external

surfaces

or

remove

indicator

characters.

FCC

WARNING

e

This

equipment

may

generate

or

use

radio

frequency

energy.

Changes

or

modifications

to

this

equipment

may

cause

harmful

interference

unless

the

modifications

are

expressly

approved

in

the

instruction

manual.

The

user

could

lose

the

authority

to

operate

this

equipment

if

an

unauthorized

change

or

modification

is

made.

External

|

Number

of

View

Items

'

Core

|

re

Self-tapping

screws

(94

x

16mm)

Terminal

cover

(Power

terminal)

Operations

of

the

following

control

and

switches

are

required

in

accordance

with

the

center

unit

and

speakers

connected

with

this

unit.

@

RCA

CABLE

GROUND

LEAD

terminal

@

FILTER

switch

These

switches

allow

filtering

of

the

speaker

output

signals.

e

HPF

(High

Pass

Filter)

position

(KAC-626

only)

"Only

frequencies

of

150

Hz

or

higher

are

output.

(Frequencies

below

150

Hz

are

cut.)

e

LPF

(Low

Pass

Filter)

position

Only

frequencies

of

80

Hz

or

lower

are

output.

(Frequencies

above

80

Hz

are

cut.)

e

OFF

position

The

original

sound

without

filtering

is

output.

@)

OPERATION

switch

This

switch

allows

to

select

the

amplification

method

of

input

signals.

e

STEREO

position

The

input

left

and

right

signals

are

amplified

separately.

Use

this

position

when

the

unit

is

as

a

stereo

amplifier.

e

L+R

position

(KAC-626

only)

The

input

left

and

right

signals

are

combined

before

being

amplified.

Use

this

position

when

the

unit

is

used

for

subwoofer

speakers

or

the

L+R

(monaural)

sound

is

required.

e

MONO

(Lch)

position

;

Amplifies

the

signal

input

from

the

left

side

only.

Set

to

this

position

and

make

bridged

connections

to

use

as

a

high-power

monaural

amplifier.

(The

input

right

signal

is

not

output.)

@

INPUT

SENSITIVITY

control

Maximum

power

Center

unit

|

Amplifier

input

output

of

genuine-

exes

accessory

car

stereo.)

Preout

level

sensitivity

Set

this

controi

according

to.the

pre-output

level

300

mV

MAX

(0.15

V)

(OW

[800-1000

mv

of

the

center

unit

connected

with

this

unit,

or

to

the

maximum

power

output

of

the

genuine-

1.0

V~MIN

accessory

Car

stereo.

For the

pre-output

level

or

the

maximum

power

output,

refer

to

the

“Specifications”

in

the

instruction

manual

of

the

center

unit.

6)

LINE

IN

terminal

©

SPEAKER

LEVEL

INPUT

terminal

»

2

English

@

FUSE

(25

A)

BATTERY

terminal

(9)

GROUND

terminal

@

POWER

CONTROL

(REMOTE)

LEAD

terminal

d)

SPEAKER

OUTPUT

terminals

KENWOOD

POWER

AMPLIFIER

POWER

INDICATOR

;

When

the

power

's

turned

on,

the

Power

indicator

lights.

If

the

Power

indicator

does

not

light

when

the

power

is

turned

on,

the

protection

function

may

be

activated.

Check

whether

there

ts

any

indication

of

trouble.

This

unit

is

equipped

with

a

protection

function

for

protecting

this

unit

and

your

speakers

from

various

accidents

or

problems

that

can

occur.

When

the

protection

function

Is

triggered,

the

Power

indicator

goes

off

and

the

amplifier

stops

operating.

The

protection

function

activates

in

the

following

situations:

When

a

speaker

output

contacts

ground.

When

the

unit

malfunctions

and

a

DC

signal

is

sent

to

the

speaker

output.

When

the

temperature

of

internal

parts

exceeds

120°C

(248°F).

When

a

ground

cable

of

the

center

unit

(cassette

receiver,

CD

receiver,

etc.)

or

this

unit

is

not

connected

to

a

metal

part

serving

as

an

electrical

ground

passing

electricity

to

the

battery's

negative

©

terminal.

Power

indicator

Frnoalich

2

Installation

procedure

.

Remove

the

ignition

key

and

disconnect

the

negative

©

terminal

of

the

battery

to

prevent

short

circuits.

|

2.

Connect

the

input

and

output

cables

of

the

units.

‘8.

Connect

the

speaker

cables.

4.

Connect

the

ground

cable

and

battery

cable

in

the

order

listed.

5

6

.

Install

the

unit

in

the

car.

.

Connect

the

negative

©

terminal

of

the

battery.

e

|f

the

fuse

blows,

check

cables

for

shorts,

then

replace

the

fuse

with

one

of

the

same

rating.

Check

that

no

unconnected

cables

or

connectors

are

touching

the

car

body.

Do

not

remove

caps

from

unconnected

cables

or

connectors

to

prevent

short

circuits.

e

Connect

the

speaker

cables

to

appropriate

speaker

connectors

separately.

Sharing

the

negative

cable

of

the

speaker

or

grounding

speaker

cables

to

the

metal

body

of

the

car

can

cause

this

unit

to

fail.

®

After

installation,

check

that

the

brake

lamps,

winkers,

and

wipers

work

properly.

Do

not

install

the

unit

under

the

carpet.

Otherwise

heat

build-up

occurs

and

the

unit

may

be

damaged.

ie

|

“

Self-tapping

screw

_

(84x

16mm)

Pe

ate:

Installation

board,

etc.

(thickness

:

15

mm

or

more)

*

Since

the

power

amplifier

has

no

parts

which

require

operation,

it

can

be

installed

at

a

position

away

from

the

driver's

seat

without

any

hindrances.

As

generally

accepted

positions

for

its

installation,

places

such

as

inside

the

trunk,

etc.

can

be

considered.

e

install

this

unit

in

a

location

which

allows

heat

to

easily

dissipate.

Once

installed,

do

not

place

any

object

on

top

of

the

unit.

e

After

installing

the

unit,

check

to

make

sure

that

electrical

equipment

such

as

the

brake

lamps,

turn

signal

lamps

and

windshield

wipers

operate

normally.

e

install

the

unit

securely

in

a

location

that

does

not

interfere

with

driving.

4

English

§

~~

With

the

KAC-626/606,

a

subwoofer

can

be

added

easily

to

the

speaker

system

by

marking

use

of

the

properties

of

coils

and

capacitors.

This

mode

of

operation

ts

called

Tri-mode.

Principle

of

Tri-mode

@

Method

of

frequency

band

division

using

a

coil

and

capacitor

seein

case

of

6dB/oct.

slope

L

Output

Crossover

Frequency

"ns

CX;

3

>

g

Cc

Frequency

5

-3

dB

Output

a

‘

i=>

i

k:

Frequency

Frequency

e

Coil

{(L):

Passes

tow

frequencies

and

blocks

high

frequencies.

(Low

pass)

e

Capacitor

(C):

Passes

high

frequencies

and

blocks

low

frequencies.

(High

pass)

@

Your

coil

and

capacitor

Use

the

following

formula

to

identify

the

coil

and

capacitor

you

need

in

your

system.

159000

159xR

C=

aH.

(uF)

=

ae

ae

(mH)

fc=Cut

of

Frequency

(Hz)

R=Speaker {mpedance

(Q)

Example:

When

it

is

required

to

set

a

crossover

frequency

of

120

Hz

using

speakers

with

an

impedance

of

4

ohms.

Prepare

commercially-available

coil

and

capacitor

with

the

closest

ratings

to

the

results

calculated

from

the

formula

above.

The

capacitor

rating

should

be

as

close

as

possible

to

331.25

(uF)

and

the

coil

rating

shouid

be

as

close

as

possible

to

5.3

(mH).

mSystem

example

To

use

the

Tri-mode

configuration,

set

the

OPERATION

switch

to

the

STEREO

position.

R

Fuli-range

speakers

L

(Low

cut)

Subwoofer

(Monaural)

ACAUTION

lf

you

wish

to

bridge-connect

a

speaker,

such

as

a

subwoofer,

as

shown

above,

the

speaker

impedance

must

be

no

!ess

than

4

ohms.

Connecting

a

speaker

with

an

impedance

!ower

than

4

ohms

may

damage

the

unit.

Frnolich

5

|

a

_@System

connection

RCA

cable

ground

lead

terminal

When

using

an

RCA

cable

with

a

ground

lead

attached,

connect

the

ground

lead

to

this

terminal.

ACAUTION

Do

not

connect

cables

and

leads

to

both

RCA

cable

input

jacks

and

the

speaker

input

terminals

simultaneously,

for

this

may

cause

maifunction

or

damage.

Left

output

(White)

CENTER

UNIT

(Casstte

receiver,

Graphic

equalizer

etc.)

Power

control

jead

{Commercially

available

part)

ACAUTION

Do

not

use

this

terminal

for

power

source

grounding.

This

unit

will

be

damaged

if

the

power

source

grounding

wire

is

connected

to

this

terminal.

Battery

terminal

Ground

terminal

Power

contro!

terminal

speaker

Left

speaker

Terminal

cover

Power

terminal

Pass

battery

and

ground

cables:

through

supplied

terminal

cover

and

connect

to

respective

terminals.

After

completing

connections,

fasten

terminal

cover

over

terminal

bracket.

Speaker

output

terminal

Connect

the

speaker

output

cables

to

these

terminals.

Speaker

terminal

polarity

Lead

terminal

(Commercially

available

part)

Terminal

cover

Lead

terminal

Power

control

(Commercially

available

part)

Speaker

output

cable

Ground

cable

P :

lf

a

buzzing

noise

is

heard

from

the

speakers

when

the

engine

is

running,

connect

a

line

noise

filter

(optional)

to

each

of

the

battery

cable.

=

KS)

a

iS

hs

To

prevent

fire

caused

by

a

short

in

the

wiring,

connect

a

fusible

link

or

Battery

breaker

nearby

the

battery's

positive

terminal.

Connect

the

ground

cable

to

a

metal

part

of

the

car

chassis

that

acts

as

an

electrical

.

ground

passing

electricity

to

the

battery's

negative

©

terminal.

Do

not

turn

the

power

on

if

the

ground

cable

is

not

connected.

6

English