Kenwood KAC-959 Controls, Power indicator, System examples, Stereo Connections, A position

Controls

FUSE(25Ax2)

POWER IN

GND

P.CON BATT

SPEAKER	BRIDGED
	LEFT	RIGHT	SUB
OUTPUT
A

SPEAKER LEVEL INPUT

LEFT	RIGHT
	A

				GND
SPEAKER LEVEL INPUT		1	1	L		1
	2	0.5	2	0.5	2	0.5

100 150

80

040

1 25

2 0.5

25 25

B

B

A	3	0.3	150Hz	150Hz	3	0.3		3	0.3	OPERATION
B	4		80Hz OFF	80Hz OFF 4			R	4		STEREO MONO(Lch)

70

A B SUB

170

5/4/3 CHANNEL POWER AMPLIFIER

15

1

2 3 4

SUB

56

7

L	R		(MIN)5 0.2(MAX)			(MIN)5 0.2(MAX)			(MIN)5 0.2(MAX)
			A.CH INPUT	A.CH HPF	B.CH HPF	B.CH INPUT			SUB.CH INPUT
			SENSITIVITY(V)			SENSITIVITY(V) A A B	A	B	SUB SENSITIVITY(V)
						INPUT SELECTOR		LINE IN
150Hz		150Hz				!			@
80Hz	OFF	80Hz OFF
A.CH HPF		B.CH HPF				0
		A	A B
		INPUT SELECTOR
		8	9

50 200

SUB.CH LPF

FREQUENCY(Hz)

INPUT

SELECTOR

#

OPERATION	A B SUB
STEREO MONO(Lch)

INPUT

SELECTOR

$%

3	0.3
4		10
(MIN)5	0.2(MAX)	(W)
	INPUT
SENSITIVITY(V)			MAXIMUM POWER

Power indicator

The unit is a 5-channel amplifier incorporating 2 stereo amplifiers and 1 monaural amplifier in a single body.

The stereo amplifier on one side is called amplifier A, while the one on the other side is amplifier B. The monaural amplifier is called the amplifier SUB. This unit is compatible with a large variety of systems by combining the switches and functions described in the following.

1Fuse (25 A × 2)

2Power control terminal

3Battery terminal

4Ground terminal

5Amplifier A/B speaker output terminals

•Stereo Connections:

When you wish to use the unit as a stereo amplifier, stereo connections are used.

•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 (-) SPEAKER OUTPUT terminals.)

6Amplifier SUB speaker output terminal

As this unit accepts speakers with a minimum impedance of 2 ohms, connect speakers with

2-ohm or higher impedance to these terminals.

7Speaker level input terminals

A center unit with no RCA output can still be

connected to the speaker output.

Again, even without a power control signal, the power is switched ON/OFF automatically by the speaker signal.

8HPF(High-Pass Filter) switch

When this switch is set to 80 Hz or 150 Hz, frequencies below the setting value will be cut.

9INPUT SELECTOR (A/AB) switch

This switch toggles the input signal of amplifier B.

•A position:

The input for terminal A is output from amplifiers A and B.

•AB position:

The input for terminal A is output from amplifier A, while the input for terminal B is output from amplifier B.

0INPUT 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.

The sensitivities of amplifiers A, B and SUB can be adjusted independently regardless of the position of the input selector switch.

NOTE

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

!RCA cable ground lead terminal

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

2CAUTION

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.

@Amplifier A/B/SUB LINE IN terminal

#SUB.CH LPF(Low-Pass Filter) FREQUENCY control

This control adjusts the frequency band output from this SUB channel.

$OPERATION switch

This switch is used to select the operation mode of the amplifier.

•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.)

%INPUT SELECTOR (AB/SUB) switch

This switch toggles the input signal of amplifier SUB.

•AB position:

The input for terminals A and B input is mixed and output from amplifier SUB.

NOTE

The input signal varies according to the setting

of the INPUT SELECTOR (A/AB) switch and the OPERATION switch.

•SUB position:

The input for the SUB terminal is output by amplifier SUB.

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 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 won’t 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.

System examples Connection

■5-channel system

NOTE

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

CENTER					F	L	A
						R
	UNIT					L
		OPERATION					B
	9			A B SUB	R	R
		STEREO	MONO(Lch)
A	A B		$	INPUT %		L	SUB
INPUT SELECTOR				SELECTOR	N-F	R
CENTER					F	L	A
						R
	UNIT					L
		OPERATION					B
	9			A B SUB	R	R
		STEREO	MONO(Lch)
A	A B		$	INPUT %		L	SUB
INPUT SELECTOR				SELECTOR		R

L	Front left speaker
A
	Front right speaker
R
L	Rear left speaker
B
R	Rear right speaker
SUB	Subwoofer
150Hz	150Hz
80Hz OFF 8 80Hz OFF
A.ch HPF	B.ch HPF

100	150
80

■RCA cable connection

CENTER UNIT (Cassette receiver,

CD receiver, etc.)

A L

R B L

RCA cable*

R

■Speaker level input connection

Genuine-accessory car stereo (No

line output center unit etc.)

L R

A

L R

B

70

170

SUB

7		INPUT
	LEVEL	RIGHT

CENTER				L	A
				R
UNIT				L
	OPERATION				B
9			A B SUB	R
	STEREO MONO(Lch)
A A B		$	INPUT %	L	SUB
INPUT SELECTOR			SELECTOR	R

50 200

SUB.CH LPF # FREQUENCY(Hz)

!

D

GND

N

G

1

1

L

1

100

150

2

0.5

2

0.5

2

0.5

80

170

3

3

3

70

0.3

150Hz

150Hz

0.3

0.3

OPERATION

5/4/3 CHANNEL

4

80Hz OFF

80Hz OFF

4

R

4

STEREO MONO(Lch)

A B SUB

POWER AMPLIFIER

(MIN)5

0.2(MAX)

(MIN)5

0.2(MAX)

(MIN)5

0.2(MAX)

50

200

A.CH INPUT

A.CH HPF

B.CH HPF

B.

INPUT

SUB.CH INPUT

SUB.CH LPF

SENSITIVITY(V)

SENSITIVITY(V)

A A B

A

B

SUB

SENSITIVITY(V)

FREQUENCY(Hz)

INPUT

INPUT SELECTOR

LINE IN

SELECTOR

SPEAKERLEFT

POWER IN	SPEAKER	BRIDGED			SPEAKER	INPUT
		LEFT	RIGHT	SUB
FUSE(25Ax2)	OUTPUT				LEFT	RIGHT

	GND	A	A
	P.CON BATT		SPEAKER LEVEL INPUT
25	25	B	B	B
				A
			L	R
			SUB

ACC

Power control wire*

Battery Car fuse box

■ 3-channel system

CENTER

L

L

A

BRIDGED

■ Speaker stereo connection

R

A

Left speaker

UNIT

9

OPERATION

R

L

B

A

L

A

R

A B SUB

R

BRIDGED

STEREO

MONO(Lch)

Right speaker

A A B

$

INPUT %

L

SUB

B

INPUT SELECTOR

SELECTOR

R

N-F

Lead terminal*

2

L

SUB

Subwoofer

CENTER

L

A

BRIDGED

R

POWER IN

BRI

D

SPEAKER LEVEL INPUT

UNIT

FUSE(25Ax2)

SPEAKER

LEFT

RIGHT

SUB

LEFT

RIGHT

L

150Hz

150Hz

A

GND

OUTPUT

R

A

B

80Hz

OFF

8

80Hz

OFF

B

P

BATT

OPERATION

25 25

9

R

A B SUB

B

STEREO

MONO(Lch)

A.ch HPF

B.ch HPF

L

R

SUB

L

SUB

INPUT %

100

150

A A B

SUB

SU

B

5

HT

6

INPUT SELECTOR $

SELECTOR

R

80

170

IDGED R

IG

70

BR

LE

FT

50

200

SUB.CH LPF

#

FREQUENCY(Hz)

SUB

A

SPEAKER LEVEL INPUT

A

B B

L R

■Speaker bridge connection

A Bridge SUB

Lead terminal*				2
BRIDGED
					POWER IN	SPEAKER	BRIDGED	SPEAKER LEVEL INPUT
A		FUSE(25Ax2)					LEFT	LEFT	RIGHT
					GND	OUTPUT
				P		A			A
B					BATT				SPEAKER LEVEL INPUT
		25	25
										A
L	R					B			B	B
		SUB							L	R

						SU	B
5							6
				RIG	HT
		IDG	ED
	BR
LE	FT

B LB R

■Power wire connection

POWER IN	SPEAKER	BRIDGED			SPEAKER LEVEL INPUT
		LEFT	RIGHT	SUB
FUSE(25Ax2)	OUTPUT				LEFT	RIGHT

	GND	A	A
	P.CON BATT		SPEAKER LEVEL INPUT
2	2
				A
5	5	B	B	B
			L	R
			SUB

23 4

Lead terminal*

Terminal cover

Power control wire*

Battery wire* Ground wire*

Protective Fuse*

Battery

B Bridge

Description of markings in the figure.

A / L Left

A L Front left

A R Front right

B / R Right

B	L	Rear left
B	R	Rear right

SUB Subwoofer

FFront

R Rear

N-FNon-fader

Commercially available

*parts