Kenwood KAC-728, KAC-628, KAC-528 User Manual

KAC-728 KAC-628 KAC-528

POWER AMPLIFIER

INSTRUCTION MANUAL

B64-1360-00 (EM)

To prevent injury and/or fire, take the following precautions:

• When extending the battery or ground cables, make sure to use automotive-grade cables or other cables with an area of 5 mm

(AWG10) or more to prevent cable deterioration and damage to the cable coating.

• To prevent short circuits, never put or leave any metallic objects (e.g., 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 short circuits 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

Safety precautions

Part name

Number of

Items

External

View

Round terminal

(Large)

Round terminal

(Medium)

Round terminal

(Small)

Terminal cover

(Power terminal)

Self-tapping screws

(ø4 × 16 mm)

Protection function

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.

■

Power indicator:

When the power is 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 is any indication of trouble.

■

The protection function activates in the following situations:

• When a speaker cable may be short-circuited.

• 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

Installation procedure

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

Controls

Operations of the following control and switches are required in accordance with the center unit and speakers connected with this unit.

FUSE(15A)

POWER IN

BATT P.CON(REMOTE)

GND

LEFT

BRIDGED

RIGHT

SPEAKER OUTPUT

POWER AMPLIFIER

LPF

FILTER

OFF

MONO(Lch)

STEREO

OPERATION

GND

INPUT

SENSITIVITY(V)

MAXMIN

0.30.5

1.0

LINE IN

LEFT RIGHT

SPEAKER LEVEL INPUT

FUSE(25A)

POWER IN

BATT P.CON(REMOTE)

GND

LEFT

BRIDGED

RIGHT

SPEAKER OUTPUT

POWER AMPLIFIER

LPF

FILTER

HPF

MONO(Lch)

STEREO

OFF

L+R

OPERATION

GND

INPUT

SENSITIVITY(V)

MAXMIN

0.30.5

1.0

LINE IN

LEFT RIGHT

SPEAKER LEVEL INPUT

LPF

FILTER

OFF

MONO(Lch)

STEREO

OPERATION

GND

INPUT

SENSITIVITY(V)

MAXMIN

0.30.5

1.0

LINE IN

LEFT RIGHT

SPEAKER LEVEL INPUT

FUSE(20A x 2)

POWER IN

BATT P.CON(REMOTE)

GND

LEFT

BRIDGED

RIGHT

SPEAKER OUTPUT

POWER AMPLIFIER

!0987

0987

5432

1 65432

KAC-628

KAC-528

KAC-728

KAC-628

KAC-528

KAC-728

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