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KENWOOD KAC729S
Owner's Manual


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Description of KENWOOD KAC729S Owner's Manual

Complete owner's manual in digital format. The manual will be available for download as PDF file after You purchase it.

Owner's Manual ( sometimes referred to as User's Guide or User's Manual ) contains information on how to use Your device. After placing order we'll send You download instructions on Your email address.

The manual is available in languages: English

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Text excerpt from page 2 (click to view)
Controls
POWER IN FUSE(40A) BATT.

GND
P.CON(REMOTE)

BRIDGED LEFT RIGHT SPEAKER OUTPUT

FILTER
OFF LPF

OPERATION
STEREO MONO(Lch)

SPEAKER LEVEL INPUT

LINE IN
0.3

LEFT R

RIGHT

KAC-829 KAC-729S
POWER AMPLIFIER

GND

1.0

0.5

L

MIN MAX INPUT SENSITIVITY(V)

KAC-829 KAC-729S KAC-529S

9
0.5 0.3

10 15 20 (W)
1.0
STEREO/BRIDGEABLE AMPLIFIER

1 2 34
25
POWER IN FUSE(25A) BATT.

5

6 7 89

0

!

STEREO/BRIDGEABLE AMPLIFIER

GND
P.CON(REMOTE)

BRIDGED LEFT RIGHT SPEAKER OUTPUT

FILTER
OFF HPF LPF

OPERATION
L+R STEREO MONO(Lch)

SPEAKER LEVEL INPUT

MIN MAX INPUT SENSITIVITY(V)
MAXIMUM POWER

KAC-829

40

LINE IN
0.3

LEFT R

RIGHT

KAC-629S KAC-529S 1 234 5

GND

1.0

0.5

L

25W or greater KAC-629S ! KAC-829 Power indicator KAC-729S KAC-629S KAC-529S

POWER AMPLIFIER

MIN MAX INPUT SENSITIVITY(V)

6 7 89

0

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

6 RCA cable ground lead terminal
When using an RCA cable with a ground lead attached, connect the ground lead to this terminal.
2CAUTION

⢠STEREO position
The amplifier can be used as a stereo amplifier.

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.

⢠L+R position (KAC-629S only)
The input left and right signals are combined before being amplified. Use this position when the unit is used for subwoofer speakers or the L+R (monaural) sound is required.

1 Fuse
40 A Ã 1 : KAC-829/729S 25 A Ã 1 : KAC-629S 15 A Ã 1 : KAC-529S
NOTE

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

⢠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.)

If you canât find the specified capacity fuse at your store etc., consult your Kenwood dealer.

7 FILTER switch

2 Battery terminal 3 Ground terminal 4 Power control (REMOTE) terminal 5 SPEAKER OUTPUT terminals ⢠Stereo Connections:
When you wish to use the unit as a stereo amplifier, stereo connections are used.

These switches allow filtering of the speaker output signals.

â  The protection function is activated in the following situations:
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. ⢠When a speaker wire 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 internal temperature is high and unit wonât operate. ⢠When a ground wire 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.

⢠HPF (High Pass Filter) position (KAC629S only)
Only frequencies of 150 Hz or higher are output. (Frequencies below 150 Hz are cut.)

9 INPUT SENSITIVITY control
Set this control according to the pre-output level of the center unit connected with this unit, or to the maximum power output of the genuine-accessory car stereo. Use the diagram on the right as a guide.
NOTE

⢠LPF (Low Pass Filter) position

⢠Bridged Connections:
When you wish to use the unit as a high-output monaural amplifier, bridged connections are used. (Make connections to the LEFT channel (+) and the RIGHT channel (â) SPEAKER OUTPUT terminals.)

Only frequencies of 80 Hz or lower are output. (Frequencies above 80 Hz are cut.) The Lch and Rch will be mixed before output even if the operation switch is set to STEREO. The original sound without filtering is output.

⢠OFF position 8 OPERATION switch
This switch allows selection of the amplification method of input signals.

For the pre-output level or the maximum power output, refer to the âSpecificationsâ in the instruction manual of the center unit.

0 LINE IN terminal ! Speaker level input terminals

System examples
â  2-channel system
CENTER UNIT
L R L R

Connection
NOTE

*â¦Commercially available parts

For safe installation, read "Installation procedure" before starting work.

Left speaker Right speaker

â  RCA cable connection
CENTER UNIT (Cassette receiver, CD receiver, etc.)

â  Speaker level input connection
Genuine-accessory car stereo (No line output center unit etc.) Speaker RCA cable* Car fuse box ACC

KAC-829/729S/529S

7

8

KAC-629S 7 8
FILTER
OFF HPF LPF

FILTER
OFF LPF

OPERATION
STEREO MONO(Lch)

OPERATION
L+R STEREO MONO(Lch)

â  Subwoofer system
CENTER UNIT
L R L R

Left speaker Right speaker

Battery
FILTER
OFF LPF

OPERATION
STEREO MONO(Lch)

LINE IN
0.3

SPEAKER LEVEL INPUT LEFT RIGHT R

FILTER

OPERATION
STEREO MONO(Lch)

6
Subwoofer
GN D
GND
1.0

0.5

L

!
S KE PEAT LEF R LE

PU IN VEL RIGHT

OFF LPF

LINE IN
0.3

SPEAKER LEVEL INPUT LEFT RIGHT R

T
0.5

L

MIN MAX INPUT SENSITIVITY(V)

GND

MIN MAX INPUT SENSITIVITY(V)

1.0

KAC-829/729S/529S

7

8

7

KAC-629S

8

Power control wire*

FILTER
OFF LPF

OPERATION
STEREO MONO(Lch)

FILTER
OFF HPF LPF

OPERATION
L+R STEREO MONO(Lch)

â  1-channel system
CENTER UNIT
L
L R L R

â  Speaker stereo connection
Left speaker Lead terminal* Right speaker
POWER IN BATT.

â  Speaker bridge connection

4
Lead terminal*
GND
P.CON(REMOTE) BRIDGED LEFT RIGHT SPEAKER OUTPUT POWER IN BATT.

4
GND
P.CON(REMOTE) BRIDGED LEFT RIGHT SPEAKER OUTPUT

R

L R

L R

5
BRIDG

ED

RIGHT
POWER AMPLIFIER

5
T LEF
BRIDG E

D

IGHT R

POWER AMPLIFIER

KAC-829/729S/529S

7

8

7

KAC-629S

FT LE

8

FILTER
OFF LPF

OPERATION
STEREO MONO(Lch)

FILTER
OFF HPF LPF

OPERATION
L+R STEREO MONO(Lch)

â  Tri-mode
High pass
C L

Left speaker Crossover Frequency 0 dB Subwoofer (L + R)
C

Right speaker

Subwoofer

CENTER UNIT

L R

L R

â  Power wire connection
-3 dB
L C
POWER IN BATT.

GND
P.CON(REMOTE)

BRIDGED LEFT RIGHT SPEAKER OUTPUT

KAC-829/729S/529S

7

8

7

KAC-629S

8

Frequency C= 159000 (µF) fc x R 159 x R L= fc (mH) = = 159000 = 331.25 µF 120Hz x 4⦠159 x 4⦠120Hz = 5.3 mH

POWER AMPLIFIER

FILTER
OFF LPF

OPERATION
STEREO MONO(Lch)

FILTER
OFF HPF LPF

OPERATION
L+R STEREO MONO(Lch)

234
Lead terminal* Terminal cover

Principle of Tri-mode Method of frequency band division using a coil and capacitor ... in case of 6dB/oct. slope Coil (L): Passes low frequencies and blocks high frequencies. (Low pass) Capacitor (C): Passes high frequencies and blocks low frequencies. (High pass) Example: When it is required to set a crossover frequency of 120 Hz using speakers with an impedance of 4 ohms. fc=Cut of Frequency (Hz) R=Speaker Impedance (â¦)

2CAUTION ⢠If you wish to bridge-connect a speaker, the speaker impedance must be no less than 4 ohms. Connecting a speaker with an impedance lower than 4 ohms may damage the unit. ⢠Be sure to connect capacitors to speakers to which high frequencies will be passed. Failure to do so will result in a drop of the combined impedance with the subwoofer. ⢠Ensure that the withstand voltage and current ratings of the capacitors (C) and coils (L) are sufficient.

Power control wire* Battery wire* Ground wire*

Protective Fuse* Battery

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