Kenwood KAC-PS501F User Manual

KAC-PS501F

4-CHANNEL 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.

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.

• 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.

• 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.

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 10 mm

(AWG8) [5 mm2(AWG10) × 2] 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)

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

Exhaust outlet

English

Controls

This is a 4 channel amplifier including 2 stereo amplifiers in a body. One amplifier is referred to as amplifier A and the other is amplifier B. This unit is compatible with a large variety of systems by combining the switches and functions described in the following.

LINE IN

P.CON EXT.AMP.CONT.

GND

MONO

LINE OUT

25Hz

15Hz

INFRASONIC FILTER OPERATION

OFF

0.2

0.5

BB AA +

(MAX)(MIN)

25Hz

15Hz

INFRASONIC

FREQ (Hz) FREQ (Hz)

OFF

LPF

OFF

HPF

MONO

STEREO

FILTER

LPF

OFF

HPF

OPERATION

MONO

STEREO

B.M.S.

FREQ(Hz)

B.M.S.

(

OPEN/ B.M.S.

(REMOTE)

INPUT SELECT

CONTROL

INPUT SENSITIVITY(V)

0.2

0.5

10050

(MAX)(MIN)

INPUT SENSITIVITY(V)

CONTROL

LEFT

BRIDGED

RIGHT

SPEAKER OUTPUT

FUSE(20A×4)

BATT.

GND

202020

$ %

25Hz

15Hz

INFRASONIC FILTER OPERATION

OFF

0.2

0.5

(MAX)(MIN)

FREQ (Hz)

LPF

OFF

HPF

MONO

STEREO

INPUT SELECT

CONTROL

INPUT SENSITIVITY(V)

1 42 3

7896 0!

Fuse (20 A ×4)

Battery terminal

Ground terminal

Amplifier A speaker output terminals

Amplifier B speaker output terminals

❖

SPEAKER OUTPUT terminals

• Stereo Connections:

When you wish to use the unit as a stereo amplifier, stereo connections are used. The speakers to be connected should have an impedance of 2Ω or greater. When multiple speakers are to be connected, ensure that the combined impedance is 2Ω or greater for each channel.

• Bridged Connections:

When you wish to use the unit as a highoutput monaural amplifier, bridged connections are used. (Make connections to the LEFT channel (+) and the RIGHT channel (-) SPEAKER OUTPUT terminals.)

The speakers to be connected should have an impedance of 4Ω or greater. When multiple speakers are to be connected, ensure that the combined impedance is 4Ω or greater.

The rated input of the speakers should be no less than the maximum output of the amplifier. Otherwise malfunction may result.

RCA cable ground lead terminal

Amplifier A LINE IN terminal

Amplifier B LINE IN terminal

LINE OUT terminal

These jacks output respectively the signals input to amplifiers A and B. They always output the stereo signals regardless of the position of the OPERATION switch.

Power control terminal

EXT.AMP.CONT. (external amplifier control) terminal

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

2CAUTION

LO PASS

50 50200 200

HI PASS

LO PASS

50 50200 200

HI PASS

25Hz

15Hz

INFRASONIC

FILTEROPERATION

OFF

25Hz

15Hz

INFRASONIC

FREQ (Hz)

OFF

LPF

OFF

HPF

MONO

STEREO

FILTER

LPF

OFF

HPF

OPERATION

MONO

STEREO

INPUT SELECT

0.2

0.5

(MAX)(MIN)

INPUT SENSITIVITY(V)

0.2

0.5

(MAX)(MIN)

INPUT SENSITIVITY(V)

@#$%&^ *

#1 #2

B.M.S.

FREQ(Hz)

B.M.S.

(

OPEN/ B.M.S.

(REMOTE)

10050

#1 When FILTER is set to LPF, the sound is monaural (L+R). #2 When INFRASONIC is set to 15Hz or 25Hz, the sound is monaural (L+R). * Note that if OPERATION is set to MONO, Lch is still monaural.

Block diagram

INPUT SELECTOR switch

This switch selects the input method of the signals to be amplified by amplifiers A and B.

• A B position:

Amplifies both of the signals input to amplifiers A and B.

• A position:

Amplifies only signal input amplifier A with both amplifiers A and B.

INPUT SENSITIVITY control

Adjust this control according to the pre-out level of the centre unit connected to this amplifier. The sensitivities of amplifiers A and B can be adjusted independently regardless of the position of the input selector switch.

Refer to “Specifications” on the centre unit’s instruction manual about the pre-out level.

OPERATION switch

The amplification methods of the signals input to amplifiers A and B can be selected independently according to the setting of this switch.

• STEREO position:

The amplifier can be used as a stereo amplifier.

• 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.)

FILTER switch

This switch allows to apply high-pass or low-pass filtering to the speaker outputs.

• HPF (High-Pass Filter) position:

The filter outputs the band of higher frequencies than the frequency set with the HPF FREQUENCY control.

• OFF position:

The entire bandwidth is output without filtering.

• LPF (Low-Pass Filter) position:

The filter outputs the band of lower frequencies than the frequency set with the LPF FREQUENCY control. The speaker output is automatically turned monaural (L+R) and the bass boost function is activated.

HPF FREQUENCY control

Sets the cutoff frequency when the FILTER switch is set to HPF.

LPF FREQUENCY control

Sets the cutoff frequency when the FILTER switch is set to LPF.

INFRASONIC FILTER switch

When this switch is set to 15 Hz or 25 Hz, frequencies below the setting value will be cut. This serves to get rid of unwanted vibrations that do not result in sound and improves the speakers’ ability to reproduce sound. Note that the speaker output will automatically be set for monaural (L+R) sound.

NOTE

English

AIR

INDUCTION

LO PASS

50 50200 200

HI PASS

LO PASS

50 50200 200

HI PASS

FILTER

FREQUENCY

POWER

COOLING FAN

OPERATION

PROTECTION

OPEN

LOW VOLTAGE

B.M.S.

4/3/2

CHANNEL POWER AMPLIFIER

LO PASS

50 50200 200

HI PASS

LO PASS

50 50200 200

HI PASS

FILTER

FREQUENCY

25Hz

15Hz

INFRASONIC

FREQ (Hz)

OFF

FILTER

LPF

OFF

HPF

OPERATION

MONO

STEREO

B.M.S.

FREQ(Hz)

B.M.S.

(

OPEN/ B.M.S.

(REMOTE)

0.2

0.5

10050

(MAX)(MIN)

INPUT SENSITIVITY(V)

CONTROL

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