Kenwood KAC-PS500F User Manual

KAC-PS500F

4-CHANNEL POWER AMPLIFIER 7 Page 2-13

INSTRUCTION MANUAL

AMPLIFICATEUR DE PUISSANCE 4 CANAUX 7 Page 14-25

MODE D’EMPLOI

4-KANAL-ENDSTUFE 7 Page 26-37

BEDIENUNGSANLEITUNG

4-KANAALS-EINDVERSTERKER 7 Page 38-49

GEBRUIKSAANWIJZING

AMPLIFICATORE DI POTENZAA 4 CANALI 7 Page 50-61

ISTRUZIONI PER L’USO

AMPLIFICADOR DE POTENCIA DE 4 CANALES 7 Page 62-73

MANUAL DE INSTRUCCIONES

AMPLIFICADOR DE POTÊNCIA DE 4 CANAIS 7 Page 74-85

MANUAL DE INSTRUÇÕES

© B64-1215-00 (EM)

LA DICHIARAZIONE DI CONFORMITA' "CE"

DI QUESTO PRODOTTO E' DEPOSITATA

PRESSO:

KENWOOD ELECTRONICS EUROPE B.V.

AMSTERDAMSEWEG 37

1422 AC UITHOORN

THE NETHERLANDS

English

3

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 and sigma servo feed back 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.

• If sound is not output normally, immediately turn power off and check connections.

• 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

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.

• 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.

• After installing the unit, check to make sure that electrical equipment such as the brake lamps,
turn signal lamps and windshield wipers operate normally.

• Install the unit securely in a location that does not interfere with driving.

2CAUTION

Installation board, etc.
(thickness : 15 mm or more)

Self-tapping screw
(ø5

× 18 mm)

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

2

English

Safety precautions

Take the following precautions to
prevent fire and avoid personal
injury :

•When extending the battery cable, or
ground cable, use 5mm

2

(AWG10) or
larger automotive grade cable to avoid
cable deterioration or damage to the
covering.

•Check that no metal objects (coins, tools,
etc.) are left inside the unit to avoid short
circuits.

•If you smell or see smoke, turn the
power off 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.

Take the following precautions to
keep the unit in proper working
order.

•Be sure the unit is connected to a 12V
DC power supply with a negative ground
connection.

•Do not open the top or bottom cover.

•Do not install the unit in places it is
exposed to direct sunlight, high heat or
humidity, water may splash over it, or
dust exists.

•If you have difficulty in installing this unit
in your vehicle, contact your Kenwood
dealer.

Cleaning the unit

•If the surface is dirty, wipe it clean with a
silicon cloth or soft dry cloth with the
power off.

Do not use hard cloths or paint thinner,
alcohol, or other volatile solvents. These
may damage external surfaces or remove
indicator characters.

2CAUTION

NOTE

2CAUTION

2WARNING

Accessories

Part name

Number
of Items

External

View

Terminal cover

(Power terminal)

1

Self-tapping screws

(ø5 × 18 mm)

6

Grommets 1

Part name

Number
of Items

External

View

Round terminal

(Large)

1

Round terminal

(Medium)

2

Round terminal

(Small)

1

4

English English

5

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.

L

L

R

R

LINE IN

P.CON(REMOTE)

GND

MONO

LINE OUT

25Hz

15Hz

INFRASONIC

FILTER

OFF

OPERATION

MONOSTEREO

OPERATION

MONOSTEREO

25Hz

15Hz

INFRASONIC

OFF

LPF

OFF

HPF

FILTER

LPF

OFF

HPF

CONTROL

INPUT

SENSITIVITY(V)

0.25

0.5

1

2

FREQUENCY(Hz) FREQUENCY(Hz)

50

70

100

LPF200

170

120

50

70

200

150

120100

HPF

150

3

4

INPUT

SELECTOR

LEFT

BRIDGED

SERVO Ι FEED BACK

RIGHT

SPEAKER OUTPUT

FUSE(20A×4)

BATT.

GND

BBBAA

B

B

B

A

A

A

A

A A

+

(MAX)

(MIN)

INPUT

SENSITIVITY(V)

0.25

0.5

1

2

3
4

(MAX)

(MIN)

CONTROL

B

50

70

100

LPF200

170

120

50

70

200

150

120

100

HPF

150

Σ

20

20

20

20

25Hz

15Hz

INFRASONIC

FILTER

OFF

OPERATION

MONOSTEREO

LPF

OFF

HPF

CONTROL

INPUT

SENSITIVITY(V)

0.25

0.5

1

2

50

70

100

LPF 200

170

120

50

70

200

150

120100

HPF

150

3
4

INPUT

SELECTOR

BAA A

(MAX)

(MIN)

OPERATION

MONOSTEREO

25Hz

15Hz

INFRASONIC

OFF

FILTER

LPF

OFF

HPF

INPUT

SENSITIVITY(V)

0.25

0.5

1

2

3

4

(MAX)

(MIN)

CONTROL

B

50

70

100

LPF 200

170

120

50

70

200

150

120

100

HPF

150

1 2 3 4 5 6

7

# $ % ^ & * (

8

9

0 ! @

Amplifier A Amplifier B

1

Cooling fans

When the internal temperature of the
amplifier rises, the cooling fans are
activated automatically to drop the
temperature. In certain situations, the
cooling fans may be operating from the
beginning of the amplifier operation.

2

RCA cable ground lead terminal

3

Amplifier A LINE IN terminal

4

Amplifier B LINE IN terminal

5

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.

6

Power control (REMOTE) terminal

7

INPUT SENSITIVITY control

Adjust this control according to the pre-out
level of the center unit connected to this
amp.
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 center
unit’s instruction manual about the pre-out
level.

8

INFRASONIC FILTER FREQUENCY
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

NOTE

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.

9

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.

0

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.

@

FREQUENCY control

When the FILTER switch is set to the HPF
(High-Pass Filter) or LPF (Low-Pass Filter)
position, the threshold frequency can be
adjusted with this control.

#

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.

*

Amplifier A SIGMA SERVO

I

FEED BACK terminals (See p.7)

(

Amplifier B SIGMA SERVO

I

FEED BACK terminals (See p.7)

The SIGMA SERVO FEEDBACK terminals
should be connected properly. Failure to
connect them properly will be the cause of
breakdown.

2CAUTION

2CAUTION

English

76

English

Power indicator

Power indicator

■

The protection function is activated in the following situations:

This unit incorporates a protection function which protects the main unit and speakers from
troubles. The unit stops to function when the protection function is activated.

•If the POWER INDICATOR lights in green:

• A speaker cable may be short-circuited.

• A speaker output may be in contact with the ground.

• The temperature of the internal parts may be higher than 120°C (248°F)

• The sigma servo connection may be erroneous.

• The fuse of this unit may be blown.

• The unit may be malfunctioning and sending DC signal to the speaker output.

•If the POWER INDICATOR does not light up:

• The grounding cable of this unit may not be connected with a metallic part which is
electrically connected with the negative terminal of the battery.

• The power control cable may not be connected to this unit.

• The grounding cable of the center unit (cassette receiver, CD receiver, etc.) may not be
connected with a metallic part which is electrically connected with the negative terminal of
the battery.

• The fuse of this unit may be blown.

■

Drop in supply voltage (If the POWER INDICATOR lights or blinks in
amber):

When the power supply voltage drops below 11.5 V, the POWER INDICATOR lights in amber.

If the POWER INDICATOR blinks or lights in amber, check the following items and make sure
to supply enough power to this unit.

• Is the battery cable too thin to supply enough power?

• Is the battery cable deteriorated?

• Is the battery exhausted?

Do not use thin or deteriorated cables for this may cause heat generation or burn. The cable
used should be thick enough (5 mm2or more) to supply power.

2CAUTION

■

Power indicator:

This lamp indicates the status of the unit,
including the power supply and protection
function, by lighting in red, amber or green or
turning off.
When power is turned ON, it lights in green
for a few seconds, then turns red when
normal operation starts.

Combined Impedance

■

Basic connection

■

Series connection

■

Parallel connection

4 Ω

4 Ω

8 Ω

4 Ω

4 Ω

4 Ω 4 Ω

Refer to the diagrams below and ensure that the combined impedance is 2Ω or greater for
stereo connections and 4Ω or greater for bridged connections.

BRIDGED

Σ SERVO Ι

FEED BACK

L

R

Sigma servo feed back

BRIDGED

Σ SERVO Ι

FEED BACK

L

R

The sound reproduced through conventional amplifiers is distorted due to the counterelectromotive
force produced in the oscillating system of the speaker. The counterelectromotive force is
particularly high with the woofer which requires a large drive mass.The sigma servo connection
reduces distortion caused by the counterelectromotive force by including the circuit up to the
speaker terminals in the negative feedback loop. This makes it possible to drive speakers with
more fidelity to the input signals and create a sharp bass sound image with few feeling of noise
interference.
The aforementioned effects will not be obtained when the sigma servo connection has not been
made.

The speaker cable and the sigma servo cable should be wired to run along the same route. Note
that this wiring should be separated from the power supply cable.

• The SIGMA SERVO FEEDBACK terminals should be connected properly. Failure to connect
them properly will be the cause of breakdown.

• The rated input of the speakers connected to this unit should be no less than the maximum
output of the amplifier. Otherwise malfunction may result.
Be specially careful in this when connecting speakers in a parallel configuration.

• Speakers that are to be used for bridged connections to this unit should have an impedance of
4Ω or greater. When connecting multiple speakers, ensure that the combined impedance is 4Ω
or greater. Connection of speakers of less than 4Ω will be the cause of breakdown.

2CAUTION

NOTE

■

Basic sigma servo connection

■

Series connection

Make this cable as short as possible.

2CAUTION

■

Parallel connection (1)

The speaker cables connected to this unit
should be thick enough to supply the
current capacity of two speakers.

2CAUTION

This connection is possible only when the
speakers are identical and the speaker cables
are also of the same type and length.

2CAUTION

■

Stereo Connections When the Aforementioned Connections Are Not
Possible

■

Parallel connection (2)

BRIDGED

Σ SERVO Ι

FEED BACK

L

R

BRIDGED

Σ SERVO Ι

FEED BACK

L

R

Σ SERVO Ι

FEED BACK

BRIDGED

L

R

BRIDGED

Σ SERVO Ι

FEED BACK

L

R

L

BRIDGED

R

Σ SERVO Ι

FEED BACK

L

L

R

R

LINE IN

P.CON(REMOTE)

GND

MONO

LINE OUT

25Hz

15Hz

INFRASONIC

FILTER

OFF

OPERATION

MONOSTEREO

OPERATION

MONOSTEREO

25Hz

15Hz

INFRASONIC

OFF

LPF

OFF

HPF

FILTER

LPF

OFF

HPF

CONTROL

INPUT

SENSITIVITY(V)

0.25

0.5

1

2

FREQUENCY(Hz) FREQUENCY(Hz)

50

70

100

LPF200

170

120

50

70

200

150

120100

HPF

150

3
4

INPUT

SELECTOR

BBBAA

A

A A

+

(MAX)

(MIN)

INPUT

SENSITIVITY(V)

0.25

0.5

1

2

3
4

(MAX)

(MIN)

CONTROL

B

50

70

100

LPF200

170

120

50

70

200

150

120

100

HPF

150

LEFT

BRIDGED

SERVO Ι FEED BACK

RIGHT

SPEAKER OUTPUT

FUSE(20A×4)

BATT.

GND

B

B

B

A

A

A

Σ

20

20

20

20

Σ Σ

Σ Σ

- +

English

98

English

Connection

LEFT

BRIDGED

SERVO Ι FEED BACK

RIGHT

SPEAKER OUTPUT

FUSE(20A×4)

BATT.

GND

B

B

B

A

A

A

Σ

20

20

20

20

Σ Σ

Σ Σ

■

Bridged Connections

■

Power and Speakers cable connection (Stereo Connections)

CENTER UNIT

(Cassette receiver,

CD receiver, etc.)

RCA cable (Commercially
available part)

A Left input (White)

A Right input (Red)

B Left input (White)

B Right input (Red)

RCA cable ground terminal

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

ALINE IN (Front)

BLINE IN (Rear)

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.

2CAUTION

Front left
speaker

Rear left
speaker

Rear right
speaker

Front right
speaker

Battey

Power control (REMOTE)
lead terminal

To prevent fire caused by a short in the
wiring, connect a fusible link or breaker
nearby the battery’s positive terminal.

Connect the ground cable 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 cable is not connected.

NOTE

2WARNING

• 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 cable.

• Do not allow the cord to directly contact the edge of the iron plate by using
Grommets.

Terminal cover

Fire wall

Grommets

Ground cable (Commercially available part)

Battery cable (Commercially
available part)

Round terminal (Large)

Power terminal

Pass battery and ground cables through supplied
terminal cover and connect to respective
terminals. After completing connections, fasten
terminal cover over terminal bracket.

Round terminal (Medium)

A Bridged

B Bridged

■

Connection Precautions

Speaker Output/Sigma Servo
Feedback Terminals

Connect the speaker output
cables to these terminals.

Lead terminal
(Commercially
available part)

Power control lead terminal

Connect the Center units's power
control lead from the center unit.

Round terminal
(Small)

• Speakers that are to be used for stereo connections to

this unit should have an impedance of 2Ω or greater.
When connecting multiple speakers, ensure that the
combined impedance is 2Ω or greater. Connection of
speakers of less than 2Ω will be the cause of breakdown.

• Speakers that are to be used for bridged connections to

this unit should have an impedance of 4Ω or greater.
When connecting multiple speakers, ensure that the
combined impedance is 4Ω or greater. Connection of
speakers of less than 4Ω will be the cause of breakdown.

2CAUTION

Power control cable
(Commercially
available part)

English

1110

English

System examples

By combining the switches and functions of the KAC-PS500F, you can implement a wide
range of audio system configurations.

L

R

L

R

L

R

L

R

L

R

LINE IN

LINE IN

LINE OUT

Σ SERVO Ι

FEED BACK

Σ SERVO Ι

FEED BACK

BA

A

B

+

BRIDGED

BRIDGED

25Hz

15Hz

INFRASONIC

FILTER

OFF

OPERATION

MONOSTEREO

LPF

OFF

HPF

CONTROL

INPUT

SENSITIVITY(V)

0.25

0.5

1

2

50

70

100

LPF 200

170

120

50

70

200

150

120100

HPF

150

3
4

INPUT

SELECTOR

BAA A

(MAX)

(MIN)

OPERATION

MONOSTEREO

25Hz

15Hz

INFRASONIC

OFF

FILTER

LPF

OFF

HPF

INPUT

SENSITIVITY(V)

0.25

0.5

1

2

3

4

(MAX)

(MIN)

CONTROL

B

50

70

100

LPF 200

170

120

50

70

200

150

120

100

HPF

150

C

C

L

C

C

L

■

Tri-mode

With the KAC-PS500F, a subwoofer can be added easily to the speaker system by marking
use of the properties of coils and capacitors. This mode of operation is called Tri-mode.

CENTER UNIT

(High pass)

Subwoofer
(L + R)
(Bridged)

●

Principle of Tri-mode

Method of frequency band division using a coil and capacitor•••in case of 6dB/oct. slope

L

C

0 dB

-3 dB

Coil (L):

Passes low frequencies and blocks high

frequencies. (Low pass)

Capacitor (C):

Passes high frequencies and blocks low

frequencies. (High pass)

Crossover Frequency

Frequency

159000

C= (µF)

fc x R

159 x R

L= (mH)

fc

fc=Cut of Frequency (Hz)
R=Speaker Impedance (Ω)

●

Example:

When it is required to set a crossover frequency of 120 Hz using speakers with an
impedance of 4 ohms.

Prepare commercially-available coil and capacitor with the closest ratings to the results calculated
from the formula above. The capacitor rating should be as close as possible to 331.25 (µF) and
the coil rating should be as close as possible to 5.3 (mH).

Be sure to connect a capacitor to the high-pass speaker. Failure to connect a capacitor will result
in a drop of the combined impedance with the woofer.

2CAUTION

■

High-power 2-channel system

■

High-pass (100 Hz) + Subwoofer (100 Hz) system

■

Full-range 4-channel + Subwoofer system

CENTER UNIT

CENTER UNIT

CENTER UNIT

Front
speaker

Left
speaker

Rear
speaker

Right
speaker

(High pass)

Subwoofer
(L + R)
(Bridged)

Subwoofer

Amplifier

CONTROL

15Hz

OFF

INFRASONIC

120100

(MIN)

100

(MIN)

100

(MIN)

100

70

70

FILTER

120

150

70

150

HPF

70

170

50

LPF 200

50

200

HPF

CONTROL

2

1

3

0.5

4

(MAX)

0.25

INPUT

SENSITIVITY(V)

MONOSTEREO

OPERATION

15Hz

OFF

INFRASONIC

120100

FILTER

120

150

70

150

HPF

70

170

50

LPF 200

50

200

HPF

CONTROL

2

1

3

0.5

4

(MAX)

0.25

INPUT

SENSITIVITY(V)

MONOSTEREO

OPERATION

15Hz

OFF

INFRASONIC

120100

FILTER

150

120

150

HPF

170

50

LPF 200

200

HPF

50

CONTROL

2

1

3

0.5

4

(MAX)

0.25

INPUT

SENSITIVITY(V)

MONOSTEREO

OPERATION

25Hz

OFF

25Hz

OFF

25Hz

OFF

LPF

B

HPF

CONTROL

LPF

B

HPF

CONTROL

LPF

B

HPF

3

4

(MIN)

SENSITIVITY(V)

OPERATION

15Hz

25Hz

OFF

INFRASONIC

100

FILTER

70

OFF

LPF

70

3

4

(MIN)

SENSITIVITY(V)

OPERATION

15Hz

25Hz

OFF

INFRASONIC

100

FILTER

70

OFF

LPF

70

2

3
4

(MIN)

SENSITIVITY(V)

OPERATION

15Hz

25Hz

OFF

INFRASONIC

100

FILTER

70

OFF

LPF

70

2

INPUT

50

50

2

INPUT

50

50

INPUT

50

50

MONOSTEREO

100

120

LPF 200

HPF

MONOSTEREO

100

120

LPF 200

HPF

MONOSTEREO

100

120

LPF 200

HPF

1

0.5

(MAX)

0.25

L

LINE IN

R

0.25

1

120

150

150

170

200

0.5

(MAX)

BAA A

INPUT

SELECTOR

L

LINE IN

R

L

LINE OUT

R

L

LINE IN

R

L

LINE IN

R

BAA A

INPUT

SELECTOR

120

150

150

170

200

1

0.5

(MAX)

0.25

120

150

150

SELECTOR

170

200

BAA A

INPUT

L

LINE IN

R

L

LINE OUT

R

L

LINE IN

R

L

LINE IN

R

L

LINE OUT

R

A

B

BA

+

A

B

BA

+

A

B

BA

+

BRIDGED

Σ SERVO Ι

FEED BACK

BRIDGED

Σ SERVO Ι

FEED BACK

BRIDGED

Σ SERVO Ι

FEED BACK

BRIDGED

Σ SERVO Ι

FEED BACK

BRIDGED

Σ SERVO Ι

FEED BACK

BRIDGED

Σ SERVO Ι

FEED BACK

L

R

L

R

L

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1312

English

Specifications

Specifications subject to change without notice.

Audio Section

Max Power Output (4 Ω)

4 Channel Mode........................................................................................................150 W × 4

3 Channel Mode ..................................................................................150 W × 2 + 600 W × 1

2 Channel Mode........................................................................................................600 W × 2

Rated Power Output (4 Ω) (+B = 12.0 V)

4 Channel Mode ..................................................................50 W × 4 (DIN45324, +B=12.0 V)

3 Channel Mode..................50 W × 2 (1 kHz, 0.05 % THD) + 200 W × 1 (1 kHz, 0.5 % THD)

2 Channel Mode........................................................................200 W × 2 (1 kHz, 0.5 % THD)

Rated Power Output (2 Ω) (+B = 12.0 V)

4 Channel Mode........................................................................100 W × 4 (1 kHz, 0.5 % THD)

Rated Power Output (4 Ω) (+B = 14.4 V)

4 Channel Mode ..................................................................75 W × 4 (DIN45324, +B=14.4 V)

3 Channel Mode..................75 W × 2 (1 kHz, 0.05 % THD) + 300 W × 1 (1 kHz, 0.5 % THD)

2 Channel Mode........................................................................300 W × 2 (1 kHz, 0.5 % THD)

Rated Power Output (2 Ω) (+B = 14.4 V)

4 Channel Mode........................................................................150 W × 4 (1 kHz, 0.5 % THD)

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

Total Harmonic Distortion (Rated power)#............................................................0.010 % (1 kHz)

Signal to Noise Ratio............................................................................................................110 dB

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

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

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

Damping Factor..............................................................................More than 1000 (at ∑ connect)

Low Pass Filter Frequency (24 dB/oct.) (Variable) ......................................................50 ~ 200 Hz

High Pass Filter Frequency (12 dB/oct.) (Variable) ......................................................50 ~ 200 Hz

Infrasonic Filter Frequency (24 dB/oct.)..........................................................................15 / 25 Hz

# Sensitivity = Mini. , Through LPF (30 kHz)

General

Operating Voltage ..............................................................................12.0 V (11 ~ 16 V allowable)

Current Consumption (4 Ω, +B = 12.0 V, 10% THD) ..............................................................42 A

Dimensions (W × H × D) ................................................................................272 × 58 × 450 mm

Weight ..................................................................................................................................7.0 kg

Troubleshooting guide

Often, what appears to be a malfunction is due to user error. Before
calling for service, please consult the following table.

Symptom Cause Remedy

No sound.
(No sound from one side.)

The output level is too
small (or too large).

The sound quality is bad.
(The sound is distorted.)

• Input (or output) cables are
disconnected.

• The connection of the sigma
servo terminals is wrong.

• Protection circuit may be
activated.

• The fuse may be blown
because the volume was too
high.

The input sensitivity adjusting
control is not set to the correct
position.

• The speakers cable are
connected with wrong + / ­polarity.

• A speaker cable is pinched by a
screw in the car body.

• The switches may be set
improperly.

• Connect the input (or output)
cables.

• Check the connection referring
to "Sigma servo feedback".

• Check connections by referring
to "Power indicator".

• Replace the fuse with a new
fuse and use a lower volume.

Adjust the control correctly
referring to “Controls”.

• Connect them properly checking
the + / - of the terminals and
cables well.

• Connect the speaker cable again
so that it is not pinched by
anything.

• Set switches properly by
referring to "Controls" and
"System examples".