Kenwood KAC-PS401M User Manual

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 automotivegrade cables or other cables with a 5mm

(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

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NOTE

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2WARNING

Part name

Number of

Items

External

View

Terminal cover

(Power terminal)

Self-tapping screws

(ø5 × 18 mm)

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.

20 25

OFFONOFFONOFF

INFRASONIC BAND

REJECT LPF

FREQ (Hz)

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 8

20 25

OFFONOFFONOFF

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 ×4)

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

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