KENWOOD KAC-PS404 4 3 Channel Power Amplifier Instruction Manual

KAC-PS704EX
KAC-PS404
KAC-6407

KAC-PS404 4 3 Channel Power Amplifier

4/3 CHANNEL 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.

Safety precautions

WARNING
To prevent injury or fire, take the following precautions:

• Mounting and wiring this product requires skills and experience. For safety’s sake, leave the mounting and wiring work to professionals.
• When extending the ignition, battery, or ground wires, make sure to use automotive-grade wires or other wires with the range of 5 mm? (AWG 10) or more to prevent  wite 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.

CAUTION
To prevent damage to the machine, take the fallowing 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.

NOTE

• 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.
CAUTION
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.
To prevent battery rise
When the unit is used in the ACC ON position without tuming the engine ON, it depletes the battery. Use it after starting the engine.
Protection function
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.

Wiring

• Take the battery wire for this unit directly from the battery. If it’s connected to the vehicle’s wiring harness, it can cause blown fuses etc.
• 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 install a protective fuse in the power cord near the battery. The protective fuse should be the fame capacity as the unit’s fuse capacity or somewhat larger.
• For the power cord and ground, use a vehicle type (fireproof) power wring cord. (Use a power wiring cord with the range of S mm? (AWG 10) or more)
• 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

• Using speakers with smaller input ratings than the amplifier’s output power would result in smoke generation or equipment failure.
• The impedance of the speakers that are going to be connected should be 20 or greater (for stereo connections), or 40 or 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.

Installation

Accessories

Installation procedure
Since there are large variety of settings and connections possible according to applications, tead 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 wires 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 installation fittings in the unit.
7. Attach the unit.
8. Connect the negative ⊖ terminal of the battery.

CAUTION

• Do not install in the below locations;
  (Unstable location, In a location that interferes with driving, In a location that gets wet, In a dusty location, In a place that gets hot, Ina place that gets direct sunlight, In a location that gets hit by hot air)

• 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.

• Donot 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 toa 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, tum signal lamps and windshield wipers operate normally.

KAC-PS704EX only

• This unit has cooling fan to decrease the internal temperature. Do not mount the unit in a place where the cooling fan and ducts of the unit are blocked. Blocking these openings will inhibit the cooling of the internal temperature and result in malfunction.

Connection

WARNING
Particular attention must be given to making good electrical contact at the amplifier-output and speaker terminals.
Poor or loose connections can cause sparking or burning at the terminals because of the very high  power that the amplifier can deliver.
CAUTION

• 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 wires for shorts, then replace the fuse with one of the same rating.
• Check that no unconnected wires or connectors are touching the car body. Do not remove caps from unconnected wires 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, turn signal lamps and windshield wipers work properly.

WARNING

Remove the ignition key and disconnect the negative ⊖ terminal of the battery to prevent short circuits.
Power wire and speaker wire connection
RCA cable connections
Speaker level input connections NOTE
Do not connect cables and leads to both RCA cable input jacks and the speaker level inputter minals simultaneously, for this may cause malfunction or damage.
Cable color of the connector

System examples

4- channel system 2- channel + Subwoofer system

For U.S.A.
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.
FCC NOTE
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment may cause harmful interference to radio communications, if it is not installed and used in accordance with the instructions. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

For Europe, Turkey
**Declaration of Conformity with regard to the EMC Directive 2014/30/EU
Declaration of Conformity with regard to the RoHS Directive 2011/65/EU
Manufacturer:
JVC KENWOOD Corporation
3-12, Moriya-cho, Kanagawa-ku, Yokohama-shi, Kanagawa,
221-0022, JAPAN
EU Representative:
JVCKENWOOD NEDERLAND BV.
Amsterdamseweg 37, 1422 AC Uithoarn,
THE NETHERLANDS
‘Information on Disposal of Old Electrical and Electronic Equipment (applicable for countries that have adopted separate waste collection systems)**
Products with the symbol (crossed-out wheeled bin) cannot be disposed as household waste.
Old electrical and electronic equipment should be recycled at a facility capable of handling these items and their waste byproducts. Contact your local authority for details in locating a recycle facility nearest to you. Proper recycling and waste disposal will help conserve resources whilst preventing detrimental effects on our health and the environment.

Troubleshooting guide

What might appear to be a malfunction in your unit may just be the result of slight misoper ation or miswiring.
Before calling service , first check the follo wing table for possible problems.

are disconnected.
• Protection circuit may be activated.
• Volume is too high.
• The speaker cord is shorted.| • Connect the input (or output) cables.
• Check connections by referring to .
• Replace the fuse and use lower volume.
• After check the speaker cord and fixing the cause of the short, replace the fuse.
The output level is too small (or too large).| • The input sensitivity adjusting control is not set to the correct position.| Adjust the control correctly referring to .
The sound quality is bad. (The sound is distorted.)| • 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 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 .

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.

1. Fuse
   KAC-PS704EX: 25 Ax 2
   KAC-PS404 / KAC-6407: 30A
   If you can’t find the specified capacity fuse at your store etc., consult your KENWOOD dealer.

2. Battery terminal (POWER IN BATT.)

3. Power control terminal (P.CON)
   Controls the unit ON/OFF.
   Controls the unit power. Be sure to connect it with all the systems.

4. Ground terminal (GND)

5. (SPEAKER OUTPUT terminals (A.ch/B.ch)
   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 high-output 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 4Ωor greater. When multiple speakers are to be connected, ensure that the combined impedance is 4Ω or greater.

6. INPUT SENSITIVITY control (A.ch/B.ch)
   Default: 0.2 [MAX]
   Set this control according to the pre-output level of the center unit connected with this unit.
   NOTE
   For the pre-output level, refer to the in the instruction manual of the center unit.

7. FILTER switch (A.ch)
   This switch allow filtering of the speaker output signals.
   HPF (High-Pass Filter) position:
   Only frequencies of 80 Hz or higher are output.
   (Frequencies below 80 Hz are cut.)
   OFF position:
   The entire bandwidth is output without filtering.

8. FILTER switch (B.ch)
   This switch allow filtering of the speaker output signals.
   LPF (Low-Pass Filter) position:
   The filter outputs the band of lower frequencies than the frequency set with the “LPF FREQUENCY” control.
   OFF position:
   The entire bandwidth is output without filtering.

9. LPF FREQUENCY control (B.ch)
   This control adjusts the frequency band output from this unit.

10. LINE IN terminal (A.ch/B.ch)

11. SPEAKER LEVEL INPUT terminal
    The output from the genuine-accessory car stereo up to 50W can be input. The power is turned on and off as the unit detects input signal (SIGNAL SENSING TURN-ON). Therefore it is not necessary to connect the power control wire.

12. Cooling fan (KAC-PS704EX only)

13. Power indicator
    When the power is turned on, the Power indicator lights.

Specific ations

Specifications subject to change without notice.
Audio section
Rated pow er output (+B = 14.4V )
KAC-PS704EX
Stereo (4Ω)……………..70 W × 4 (20 H z – 20 kH z, ≤ 1.0 % THD)
Stereo (2Ω)……………………………..100 W × 4 (1 kH z, ≤ 1.0 % THD)
Bridged (4Ω) ………………………….200 W × 2 (1 kH z, ≤ 1.0 % THD)
KAC-PS404/K A C-6407
Stereo (4 Ω)……………..40W×4 (20Hz – 20kHz, ≤ 1.0 % THD)
Stereo (2 Ω)………………………………..60 W × 4 (1 kHz, ≤ 1.0 % THD)
Bridged (4 Ω) ………………………….130 W × 2 (1 kHz, ≤ 1.0 % THD)
Speaker impedance ………………………….4Ω (2Ω to 8Ω allowable)
(Br idged connec tion: 4 Ω t o 8 Ω allo wable)
Frquencyr esponse (+0, –3 dB) …………………………20 H z – 50 kH z
Input sensitivity (R CA)…………………………………………………..0.2 V – 5.0 V
Signal to noise ratio …………………………………………………………………100 dB
Input impedance ………………………………………………………………………..10 kΩ
Low pass filter frequency (-24 dB/oc t.) (B channel) …………………….50 H z – 200 Hz (variable)
High pass filter frequency (-12 dB/oc t.) (A channel) ……….80Hz
General
Operating voltage …………………………..14.4 V (11 – 16 V allo wable)
Current consumption KAC-PS704EX …………………………………..32 A
K A C-PS404/KAC-6407 ………………….18 A
Dimensions (W×H×D) ……………………………..335 × 56 × 204 mm
13-3/16×2-3/16×8-1/16 inch
Weight KAC-PS704EX …………………………………………….2.6 k g (5.7 lbs)
KAC-PS404/KAC-6407 …………………………….2.5 k g (5.5 lbs)
CTA -2006
RMS Watts per channel@4ohms , ≤ 1% THD+N
KAC-PS704EX …………………………………………..70 W×4
KAC-PS404/K A C-6407 ………………………….40 W×4
Signal to noise ratio
(Reference: 1 Watt into 4 ohms) ……………… 80 dBA

Model KAC-6407 Serial number
US Residence Only
Register Online
Register your KENWOOD product atwww.Kenwoodusa.com
© 2016 JVC KENWOOD Corporation
B5E-0130-00/00 (KH/EH)

Documents / Resources

| KENWOOD KAC-PS404 4 3 Channel Power Amplifier [pdf] Instruction Manual
KAC-PS404 4 3 Channel Power Amplifier, KAC-PS404, 4 3 Channel Power Amplifier, Power Amplifier, Amplifier
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References

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