Kenwood KAC-PS401M Manuale utente

KAC-PS401M

MONO POWER AMPLIFIER

INSTRUCTION MANUAL

English

Safety precautions

Installation procedure

Since there are large variety of settings and

connections possible according to applications,

read the instruction manual well to select the

proper setting and connection.

1.Remove the ignition key and disconnect the

negative -terminal of the battery to

prevent short circuits.

2.Set the unit according to the intended usage.

3.Connect the input and output cables of the

units.

4.Connect the speaker cables and sigma servo

feed back cables.

5.Connect the power cable, power control

cable and grounding cable following this

order.

6.Install the unit in the car.

7.Connect the negative -terminal of the

battery.

• If sound is not output normally, immediately

turn power off and check connections. Be

sure to perform the sigma servo connection

correctly.

• Be sure to make correct connections of the

sigma servo terminals.

• Be sure to turn the power off before

changing the setting of any switch.

• If 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.

2CAUTION

To prevent injury or fire, take the following

precautions:

• When extending the ignition, battery, or

ground cables, make sure to use automotive-

grade cables or other cables with a 5mm2

(AWG10) or more to prevent cable

deterioration and damage to the cable

coating.

• To prevent a short circuit, never put or leave

any metallic objects (such as coins or metal

tools) inside the unit.

• If the unit starts to emit smoke or strange

smells, turn off the power 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.

To prevent damage to the machine, take the

following precautions:

• Be sure the unit is connected to a 12V DC

power supply with a negative ground

connection.

• Do not open the top or bottom covers of the

unit.

• Do not install the unit in a spot exposed to

direct sunlight or excessive heat or humidity.

Also avoid places with too much dust or the

possibility of water splashing.

• When replacing a fuse, only use a new one

with the prescribed rating. Using a fuse with

the wrong rating may cause your unit to

malfunction.

• To prevent a short circuit when replacing a

fuse, first disconnect the wiring harness.

• If you experience problems during

installation, consult your Kenwood dealer.

• If the unit does not seem to be working right,

consult your Kenwood dealer.

Cleaning the unit

If the front panel gets dirty, turn off the power

and wipe the panel with a dry silicon cloth or

soft cloth.

Do not wipe the panel with a hard cloth or a

cloth dampened by volatile solvents such as

paint thinner and alcohol. They can scratch the

surface of the panel and/or cause the indicator

letters to peel off.

Accessories

2CAUTION

NOTE

2CAUTION

2WARNING

Part name Number of

Items

External

View

Terminal cover

(Power terminal) 1

Self-tapping screws

(ø5 ×18 mm) 4

English

Installation

• 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.

• Use the extension cables. (Optional.)

• Do not install the unit under the carpet. Otherwise heat build-up occurs and the unit may be

damaged.

• Install this unit in a location which allows heat to easily dissipate.

Once installed, do not place any object on top of the unit.

• The surface temperature of the amplifier will become hot during use. Install the amplifier in a

place where people, resins, and other substances that are sensitive to heat will not come into

contact with it.

• This unit has cooling fans to decrease the internal temperature. Be careful not to block the

cooling fan openings when installing the unit. Blocking these openings will inhibit the cooling of

the internal temperature and result in malfunction.

• When making a hole under a seat, inside the trunk, or somewhere else in the vehicle, check

that there is nothing hazardous on the opposite side such as a gasoline tank, brake pipe, or

wiring harness, and be careful not to cause scratches or other damage.

• Do not install near the dashboard, rear tray, or air bag safety parts.

• The installation to the vehicle should securely fasten the unit to a place in which it will not

obstruct driving. If the unit comes off due to a shock and hits a person or safety part, it may

cause injury or an accident.

• After installing the unit, check to make sure that electrical equipment such as the brake lamps,

turn signal lamps and windshield wipers operate normally.

2CAUTION

,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

Installation board, etc.

(thickness : 15 mm or more)

Self-tapping screw

CA-2SL CA-12SL CA-22SL CA-52SLRCA cable

CA-3WL CA-13WL CA-23WL CA-53WLRCA cable (ø7mm)

CA-5W CA-15W CA-25W CA-45W CA-65WRCA cable (ø12mm)

0.5m 1m 2m 4m 5m 6m

Type Length

Cooling fan

Air inlet

Installation procedure

• 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.

English

Controls

L L

OUTLINE IN

P.CONGND EXT.AMP.CONT.

15 20 25 ON

OFF ON

OFF

INFRASONIC BAND

REJECT LPF

FREQ (Hz) B.M.S.

B.M.S.

(

6)B.M.S.

(REMOTE)

OPEN/

SPEAKER OUTPUT

FUSE(15A×4 )

–+

BATT.

GND

SERVO II

FEED BACK

∑

1 4 52 3

67 890

15 20 25 ON

OFF ON

OFF

INFRASONIC BAND

REJECT LPF

FREQ (Hz)

(MIN) (MAX)

0.5

0.2

50 40200 200

INPUT

SENSITIVITY

B.R.F.

FREQUENCY

LO PASS

FREQUENCY

&$^@

0.5

Fuse (15 A

Battery terminal

Ground terminal

SPEAKER OUTPUT terminals

As this unit accepts speakers with a

minimum impedance of 2 ohms, connect

speakers with 2-ohm or higher impedance

to these terminals.

The rated input of the speakers should be

no less than the maximum output of the

amplifier. Otherwise malfunction may

result.

SIGMA SERVO FEED BACK

terminals (See p.11)

Be sure to make proper connections to the

SIGMA SERVO FEED BACK terminals.

Incorrect connection may result in lack of

sound output or other malfunctions.

RCA cable ground lead terminal

LINE IN terminal

LINE OUT terminal

Power control terminal

EXT.AMP.CONT. (external

amplifier control) terminal

This controls the B.M.S. (See P.6).

INPUT SENSITIVITY control

Adjust this control according to the pre-out

level of the centre unit connected to this

amplifier.

Refer to “Specifications” on the centre

unit’s instruction manual about the pre-out

level.

Low Pass Filter switch

When this switch is set to ON, the bass is

boosted because the frequencies of the

lower frequency band than the cutoff

frequency set with the LPF FREQUENCY

control are output.

LPF FREQUENCY control

Sets the cutoff frequency when the FILTER

switch is set to LPF.

BAND REJECT filter switch

When this switch is set to ON, frequencies

in the band set with the BAND REJECT

FREQUENCY control are rejected and

eliminated. The band rejection allows to

reduce resonance inside the vehicle

compartment and standing waves. (See

P.12)

BAND REJECT FREQUENCY

control

Sets the rejection frequency when the

BAND REJECT switch is set to ON.

(See P.12)

INFRASONIC FILTER switch

When this switch is set to ON, the

inaudible, ultralow frequencies below the

frequency set with the INFRASONIC

FILTER FREQUENCY switch are cut off.

This improves the reproduction

performance of the speakers by eliminating

unnecessary oscillations which will not

become sound.

INFRASONIC FILTER FREQUENCY

switch

Switches the cutoff frequency when the

INFRASONIC FILTER switch is set to ON.

NOTE

2CAUTION

POWER indicator

This indicator glows when the unit's power

is turned ON.

(

COOLING FAN indicator

When the unit's internal temperature rises,

the slide panel opens automatically and the

cooling fan is activated.

The cooling fan is also activated when the

slide panel is opened.

Whilst the cooling fan is in operation, the

COOLING FAN indicator blinks.

)

OPERATION/PROTECTION

indicator

This indicator glows when the power

comes ON normally.

If the PROTECTION function is activated,

the indicator blinks or goes out.

LOW VOLTAGE indicator

This indicator glows when the power

voltage falls below 11V (volts).

If the power supply voltage returns to full

after a voltage drop, this indicator will blink

to alert the user that a voltage drop has

occurred.

The number of blinks indicates the number

of times the voltage has dropped (up to a

maximum of 10).

B.M.S. indicator

This indicator glows when the bass boost is

turned ON using the B.M.S. (See P.6).

If indicators !9 to @2 light up in succession or

blink in unison, the system is in DEMO mode.

If this happens, cancel DEMO mode by

pressing the OPEN/CLOSE button.

■

PROTECTION function

This unit incorporates a protection function

which protects the main unit and speakers

from troubles. The unit stops to function

when the protection function is activated.

• When the OPERATION/

PROTECTION indicator blinks:

• A speaker cable may be short-circuited.

• A speaker output may be in contact with

the ground.

• The temperature of the internal parts may

be higher than 120°C (248°F)

• The fuse of this unit may be blown.

• The unit may be malfunctioning and

sending DC signal to the speaker output.

• The sigma servo connection may be

erroneous.

Cancelling:

turn the accessory power

source (ACC) OFF, then back ON.

• When the POWER indicator and the

OPERATION/PROTECTION function

both go out:

• The fuse of this unit may be blown.

• When the LOW VOLTAGE indicator

glows or blinks:

• Is the battery exhausted?

• The car battery has a small capacity.

• If the battery cable is too thin or too long,

it will not be able to supply enough

power.

• Is the battery cable deteriorated?

NOTE

English

eXce

AIR

INDUCTION

COOLING FAN

OPERATION

PROTECTION

OPEN

LOW VOLTAGE

B.M.S.

(MIN) (MAX)

0.5

0.2 50 100

50 40200 200

B.M.S.

FREQUENCY

INPUT

SENSITIVITY

B.R.F.

FREQUENCY

LO PASS

FREQUENCY

POWER

AIR

INDUCTION

COOLING FAN

OPERATION

PROTECTION

OPEN

LOW VOLTAGE

B.M.S.

(MIN) (MAX)

0.5

0.2 50 100

50 40200 200

B.M.S.

FREQUENCY

INPUT

SENSITIVITY

B.R.F.

FREQUENCY

LO PASS

FREQUENCY

POWER

MONO POWER AMPLIFIER

COOLING FAN

OPERATION

PROTECTION

OPEN

LOW VOLTAGE

B.M.S.

(

)

English

B.M.S. (Bass Management System)

AIR

INDUCTION

(MIN) (MAX)

0.5

0.2 50 100

50 40200 200

B.M.S.

FREQUENCY

INPUT

SENSITIVITY

B.R.F.

FREQUENCY

LO PASS

FREQUENCY

POWER

L L

OUTLINE IN

P.CONGND EXT.AMP.CONT.

15 20 25 ON

OFF ON

OFF

INFRASONIC BAND

REJECT LPF

FREQ (Hz) B.M.S.

B.M.S.

(

6)B.M.S.

(REMOTE)

OPEN/

MONO POWER AMPLIFIER

COOLING FAN

OPERATION

PROTECTION

OPEN

LOW VOLTAGE

B.M.S.

(

6)B.M.S.

(REMOTE)

OPEN/

50 100

B.M.S.

FREQUENCY

OPERATION

PROTECTION

OPEN

LOW VOLTAGE

B.M.S.

■

If the unit is not going to be operated from the outside:

B.M.S. switch

This boosts the bass, focusing mainly on

the frequency setting determined using the

B.M.S. FREQUENCY control.

• (REMOTE) OPEN/CLOSE or

(REMOTE) B.M.S. position:

When the switch is in this position, the

bass is not boosted.

• B.M.S. (+6) position:

When the switch is in this position, the

bass is boosted by 6dB.

The B.M.S. indicator glows.

B.M.S. FREQUENCY control

When the B.M.S. switch is set to the

B.M.S. (+6) position, this control can be

used to adjust the central frequency that

you want to emphasise.

OPEN/CLOSE button

Each time you press this button, the slide

panel either opens or closes.

• If the slide panel meets an obstacle whilst

sliding, the slide operation will be halted. If

this happens, remove the obstacle and then

press the OPEN/CLOSE button again.

• If the centre unit power is switched OFF, or

the vehicle engine is switched OFF, whilst

the slide panel is open, the slide panel will

then close automatically. The next time the

power is turned ON or the vehicle engine is

turned ON, the slide panel will return to its

original open state.

• If the B.M.S. switch setting is changed to

(REMOTE), the slide panel will close in

preparation for remote operation, even if the

EXT.AMP.CONT. terminal is not connected.

Take care not to allow your finger or any other

object to be trapped by the slide panel whilst

it is sliding.

2CAUTION

NOTE

B.M.S. indicator

Slide panel

Bass boost +6dB (ON)

Operations using the

OPEN/CLOSE button

Slide panel

Bass boost Flat (OFF)

Operations using the

OPEN/CLOSE button

English

■

If the unit is going to be operated from the centre unit:

The amount of bass boost and the opening/closing of the slide panel can be controlled from

the centre unit. Additionally, up to 3 power amplifiers can be set at the same time.

Kenwood centre units released in 1999 or later having an “EXT.AMP.CONT.” cable operate

this unit. Instructions on how to operate the centre unit will be found in the instruction manual

supplied with the centre unit.

NOTE

B.M.S. switch

This switch is used to select the range of

control operations that can be carried out

from the centre unit.

When the bass boost is switched ON, the

B.M.S. indicator glows.

• (REMOTE) OPEN/CLOSE position:

When the switch is in this position, only the

opening/closing of the slide panel can be

controlled from the centre unit; the bass

cannot be boosted.

• (REMOTE) B.M.S. position:

When the switch is in this position, any of

the three bass boost settings — FLAT,

+6dB and +12dB — can be selected from

the centre unit. If "+6 dB" or "+12 dB" is

selected, the slide panel will open.

• B.M.S. (+6) position:

When the switch is in this position, the

bass is boosted by 6dB, regardless of any

operation carried out from the centre unit.

B.M.S. FREQUENCY control

This control allows you to use the B.M.S. to

adjust the central frequency that you want

to emphasise.

OPEN/CLOSE button

• When the B.M.S. switch is in the B.M.S.

(+6) position, the slide panel will open or

close each time the button is pressed.

• When the B.M.S. switch is set to the

(REMOTE) position, the centre unit will

control the slide panel.

If you want to adjust the control inside the

slide panel, you can open/close the slide

panel temporarily by pressing the

OPEN/CLOSE button.

• If the slide panel meets an obstacle whilst

sliding, the slide operation will be halted. If

this happens, remove the obstacle and then

press the OPEN/CLOSE button again.

• When the B.M.S. is in the (REMOTE)

position, and control operations are carried

out on the centre unit, the slide panel will

return to the status set on the centre unit

even if it is opened/closed using the

OPEN/CLOSE button.

• If the centre unit power is switched OFF, or

the vehicle engine is turned OFF, when the

slide panel is open, the slide panel will

automatically close.

When the power is turned back ON, or

when the vehicle engine is turned ON, the

slide panel will carry out an action

depending on the setting status of the

B.M.S. switch, as follows.

*If the B.M.S. switch is in the (REMOTE)

position, the slide panel will obey the

setting on the centre unit.

*If the B.M.S. switch is in the B.M.S. (+6)

position, the slide panel will return to its

original open state.

Take care not to allow your finger or any other

object to be trapped by the slide panel whilst

it is sliding.

2CAUTION

NOTE

Slide panel

Bass boost

Centre unit

setting status

Flat (OFF)

OPEN

AMP

BASS

AMP

BASS

Flat

AMP

BASS

+12

Slide panel

Bass boost

Centre unit

setting status

+6dB

(ON)

Flat

(OFF)

OPEN

+12dB

(ON)

AMP

BASS

AMP

BASS

Flat

AMP

BASS

+12

Slide panel

Bass boost

Centre unit

setting status

+6dB (ON)

Operations using the

OPEN/CLOSE button

AMP

BASS

AMP

BASS

Flat

AMP

BASS

+12

English

L L

OUTLINE IN

P.CONGND EXT.AMP.CONT.

15 20 25 ON

OFF ON

OFF

INFRASONIC BAND

REJECT LPF

FREQ (Hz) B.M.S.

B.M.S.

(

6)B.M.S.

(REMOTE)

OPEN/

P.CON

GND

LINE IN

■

RCA cable connection

CENTRE UNIT

(Cassette receiver,

CD receiver, etc.) RCA cable *

RCA cable ground terminal

When using an RCA cable with a ground lead attached, connect the ground lead to this

terminal.

Do not use this terminal for power source grounding. This unit will be damaged if the power

source grounding cable is connected to this terminal.

2CAUTION

Left input

Connection

RCA cable ground terminal

Right input

SPEAKER OUTPUT

FUSE(15A×4 )

–+

BATT.

GND

SERVO II

FEED BACK

∑

■

Speakers cable connection

Speaker

Lead terminal *

* : Commercially available parts

Distribute the speaker cables and sigma servo

cables along the same paths.

NOTE

English

■

Speaker Selection

• The rated input power of the speakers that are going to be connected should be greater than

the maximum output power (in Watts) of the amplifier. Use of speakers having input power

ratings that are less than the output power of the amplifier will cause smoke to be emitted as

well as damage.

• Use speakers that have an impedance of 2Ωor greater. When more than one set of speakers

are going to be used, calculate the combined impedance of the speakers and then connect

suitable speakers to the amplifier.

600W

(4Ω)

4 Ω

1200W

(2Ω)1200W

(2Ω)

4 Ω4 Ω

600W

(2Ω)300W

(8Ω)300W

(8Ω)

600W

(2Ω)

(600W/4Ω)(600W/4Ω) (600W/4Ω)

Maximum output of

the amplifier Combined

impedance

Rated input power and

impedance of the speakers

L L

OUTLINE IN

P.CONGND EXT.AMP.CONT.

15 20 25 ON

OFF ON

OFF

INFRASONIC BAND

REJECT LPF

FREQ (Hz) B.M.S.

B.M.S.

(

6)B.M.S.

(REMOTE)

OPEN/

EXT.AMP.

CONT.

P.CONT.

P.CONEXT.AMP.CONT.

GND

Lead terminal *

* : Commercially available parts

CENTRE UNIT

(Cassette receiver,

CD receiver, etc.)

Power control cable

(Blue/ White)

External amplifier control

cable (Pink / Black)

Extension cable *

Power control lead terminal External amplifier control terminal

■

Control terminal

Attach the connection terminal to a commercially available wiring cable for in-car use, and

connect it to the unit.

An EXT.AMP.CONT. terminal can only be attached if Kenwood centre unit is a model released in

1999 or latter, and has an “EXT.AMP.CONT.” cable. Using the external amp control, up to 3

power amplifiers can be operated simultaneously (although this may not be possible, depending

on the type of wiring cable used, and its length).

NOTE

English

Connection

■

Power cable connection

To prevent fire caused by a short in the wiring, connect a fusible link or breaker nearby the battery’s

positive terminal.

Wiring

• If 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.

• Do not allow the cable to directly contact the edge of the iron plate by using Grommets.

• 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.

• Please be sure to install a protective fuse in the power cable, near the battery. Use a fuse which

has a capacity about 10A higher than the capacity of the fuse in the unit.

• For the power cable and the earth cable, use (flame-resistant) power wiring cables for in-car use.

For the power cable, use a power wiring cable with a current capacity about 10A higher than the

capacity of the protective fuse (about 20A higher than the capacity of the fuse in the unit).

• When more than one power amplifier are going to be used, use a power supply wiring cable and

protective fuse of greater current-handling capacity than the total maximum current drawn by each

amplifier.

2WARNING

Fuse capacity

60 A

Protective Fuse Cross-sectional Area of Wiring

Cable (AWG)

5 mm2(AWG 10) or greater ×1

Example: One Power Amplifier Is Used

75 A 25 A 25 A 25 A

25 A

SPEAKER OUTPUT

FUSE(15A×4 )

–+

BATT.

GND

SERVO II

FEED BACK

∑

Terminal cover

Battery

Ground cable *

Battery cable *

Protective

Fuse

Power terminal

* : Commercially available parts

Lead terminal *

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.

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