Kenwood KAC-529S, KAC-629S, KAC-729S, KAC-829 instruction manual

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 wires.

5.Connect the power wire, power control wire

and grounding wire following this order.

6.Install the unit in the car.

7.Connect the negative -terminal of the battery.

To prevent fire caused by a short in the wiring,

connect a fusible link or breaker nearby the

battery’s positive terminal.

•Be sure to turn the power off before changing the

setting of any switch.

•If the fuse blows, check wires 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 wires to appropriate speaker

connectors separately. Sharing the negative wire of

the speaker or grounding speaker wires 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.

■Speaker level input terminals (!)

•The genuine-accessory car stereo shall have a

maximum power output of no more than 40 W.

•Do not connect the speaker output leads from

a power amplifier (Optional) to the speaker

level input terminals of this unit, for this may

cause malfunction or damage.

•Do not connect cables and leads to both RCA

cable input jacks and the speaker level input

terminals simultaneously, for this may cause

malfunction or damage.

•Connect the power control lead to a power

supply which can be turned ON/OFF by the

ignition key switch (ACC line). With this

connection, shock noise may be generated

when the power of the genuine-accessory car

stereo is switched ON/OFF.

■Power terminal (234)

Connect to their respective terminals the power

supply wire, and ground wire, all of which pass

through the associated terminal cover. Once the

connections are complete, place the cover on

the terminal section.

■Accessories

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.

•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.

•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

2WARNING

KAC-829KAC-729SKAC-629SKAC-529S

POWER AMPLIFIER

INSTRUCTION MANUAL

Take the time to read through this instruction manual.

Familiarity with installation and operation procedures will help

you obtain the best performance from your new power amplifier.

For your records

Record the serial number, found on the back of the unit, in the spaces

designated on the warranty card, and in the space provided below.

Refer to the model and serial numbers whenever you call upon your

KENWOOD dealer for information or service on the product.

Model KAC-829/729S/629S/529S Serial number

Specifications

Specifications subject to change without notice.

Audio Section ..........................................KAC-829/729S ....KAC-629S ......KAC-529S

Max Power Output (4 Ω)

Normal........................................................................200 W ×2................120 W ×2..............80 W ×2

Bridge..........................................................................600 W ×1................350 W ×1..............250 W ×1

Rated Power Output (4 Ω)

Normal (20 Hz ~ 20 kHz, 0.08 % THD) ......................100 W ×2................60 W ×2................40 W ×2

Normal (DIN45324, +B=14.4 V)..................................100 W ×2................60 W ×2................40 W ×2

Bridge (1 kHz, 0.8 % THD)..........................................300 W ×1................150 W ×1..............120 W ×1

Rated Power Output (2 Ω)

Normal (1 kHz, 0.8 % THD)........................................150 W ×2................75 W ×2................60 W ×2

Frequency Response (+0, –1 dB)....................................5 Hz ~ 50 kHz ..........10 Hz ~ 45 kHz ......5 Hz ~ 50 kHz

Signal to Noise Ratio ......................................................100 dB......................100 dB ....................100 dB

Sensitivity (MAX) (rated output)......................................0.2 V ........................0.2 V ......................0.2 V

Sensitivity(MIN) (rated output) ......................................5.0 V........................5.0 V ......................5.0 V

Input Impedance ............................................................10 kΩ......................10 kΩ......................10 kΩ

Low Pass Filter (12 dB/oct.)............................................80 Hz........................80 Hz ......................80 Hz

High Pass Filter (12 dB/oct.) (KAC-629S only)..................................................150 Hz ....................

General......................................................KAC-829/729S ....KAC-629S ......KAC-529S

Operating Voltage (11 ~ 16 V allowable) ........................14.4 V ......................14.4 V ....................14.4 V

Current Consumption (1 kHz, 10% THD)........................28 A..........................19 A ........................16 A

Dimensions (W ×H ×D)[mm] ........................................221×57×300 ............221×57×228............221×57×160

Dimensions (W ×H ×D)[inch] ........................................

8-11/16×2-1/4×11-13/16

8-11/16×2-1/4×9

..........

8-11/16×2-1/4×6-5/16

Weight ............................................................................3.7 kg (8.1 lbs)..........2.8 kg (6.1 lbs)........2.0 kg (4.4 lbs)

....................................................................................(KAC-829)

Weight ............................................................................3.8 kg (8.3 lbs) (KAC-729S)

Safety precautions

To prevent injury or fire, take the following

precautions:

•When extending the ignition, battery, or ground

wires, make sure to use automotive-grade wires or

other wires with a 5mm2(AWG10) or more to

prevent wire deterioration and damage to the wire

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.

FCC WARNING

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.

■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.

■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 wire.

•Do not allow the wire to directly contact the edge

of the iron plate by using Grommets.

•Connect the ground wire 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

wire is not connected.

•Be sure to attach a protective fuse into the

battery wire close to the battery. Use a

protective fuse having a capacity that is about 10

A higher than the maximum current drawn by the

amplifier.

•Use vehicle-type (fire-resistant) power supply

wiring wire for the battery wire and the ground

wire. The current capacity of the power supply

wiring wire should be about 10 A higher than that

of the protective fuse capacity (which means

about 20 A higher than the maximum current

drawn by the amplifier).

•When more than one power amplifier are going

to be used, use a power supply wiring wire and

protective fuse of greater current-handling

capacity than the total maximum current drawn

by each amplifier.

■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.

•The impedance of the speakers that are going to

be connected should be 2Ωor greater (for

stereo connections), or 4Ωor greater (for

bridged connections). 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.

2CAUTION

NOTE

2CAUTION

2WARNING

Maximum Current Drawn

Protective Fuse

Cross-sectional Area of

Wiring Wire (AWG)

28 A

50 A ×1 [25 A ×2]

5 mm2(AWG 10) or

greater ×1

Example: One Power Amplifier Is Used (KAC-

829/729S)

Part name Number of

Items

External

View

Terminal cover

(Power terminal) 1

Self-tapping screws

(ø4 ×16 mm) 4

Installation board, etc.

(thickness : 15 mm or more)

Self-tapping screw

(ø4 ×16 mm)

PROBLEM POSSIBLE CAUSE SOLUTION

No sound.

(No sound from one side.)

(Blown fuse.)

The output level is too

small (or too large).

The sound quality is bad.

(The sound is distorted.)

•Input (or output) cables are

disconnected.

•Protection circuit may be

activated.

•Volume is too high.

•The speaker cord is shorted.

The input sensitivity adjusting

control is not set to the correct

position.

•The speakers wire are

connected with wrong +/ -

polarity.

•A speaker wire is pinched by a

screw in the car body.

•The switches may be set

improperly.

•Connect the input (or output)

cables.

•Check connections by referring

to "Power indicator".

•Replace the fuse and use lower

volume.

•After check the speaker cord and

fixing the cause of the short,

replace the fuse.

Adjust the control correctly

referring to "Controls".

•Connect them properly checking

the +/ -of the terminals and

wires well.

•Connect the speaker wire again

so that it is not pinched by

anything.

•Set switches properly by

referring to "System examples".

8 Ω2 Ω

4Ω

4Ω4Ω

4Ω

25 A 25 A

25 A

Troubleshooting Guide

What might appear to be a malfunction in your unit may just be the result of slight

misoperation or miswiring. Before calling service, first check the following table for possible

problems.

KAC-8_529(KE-10)1En 02.12.16 11:25 AM Page 1