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KAC-X811D KAC-PS811D
SUBWOOFER POWER AMPLIFIER 7 page 2-9
INSTRUCTION MANUAL
(c) B64-2794-00/00 (MV)
Safety precautions
2WARNING
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 8 mm (AWG 8) 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.
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.
2CAUTION
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 turning the engine ON, it depletes the battery. Use it after starting the engine.
2CAUTION
To prevent damage to the machine, take the following precautions:
Protection function
There is a Protection function installed in the unit to protect the unit and speakers from various problems. When Protection operates, the display informs you of the condition. Display "E-01" Informations When the inside of the unit is overheating. When the unit has failed and direct current voltage is generated to the speaker's output.
NOTE
* 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.
"E-02"
"E-03" "VOLT" display is blinked.
Turn the power OFF and release the protection. If the "E-02" code does not disappear, contact your Kenwood dealer. When the speaker cord is shorted. When the speaker output is in contact with the vehicle ground. When voltage gets out of operation range.
Available Control Units:
A KENWOOD's LX-Bus supporting Center Unit released in 2004 or later can control this unit. The operations of the (LX) AMP Control are explained in the Operation Manual of the Center Unit.
NOTE
Wiring
* The LX AMP and the sensor unit cannot be connected simultaneously. You must connect any of them at a time.
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.
* 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 same capacity as the unit's fuse capacity or somewhat larger. * For the power cord and ground, use a vehicle type (fireproof ) power wring cord with a current capacity greater than the unit's fuse capacity. (Use a power wiring cord with a diameter of 8 mm (AWG 8) or greater.) * 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. * Use speakers that have an impedance of 1 or greater. 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.
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4 4
4
4 4
4 4
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4 4 4 4
4
2
Combined impedance
4 4 4
4
4
8
2
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Installation

Accessories
Part name External View Self-tapping screws (o5 x 18 mm) Hexagon socket head cap screw (M4 x 8 mm) Cover

Number of Items 4 4 1 1 1
Terminal cover (Power terminal) Hexagon Wrench

Installation procedure
Duct
Hexagon socket head cap screw (M4 x 8 mm)
Hexagon Wrench
Duct
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 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. Install the terminal cover. 9. Connect the negative - terminal of the battery.
2CAUTION
Cooling fan
Cover
Installation board, etc. (thickness : 15 mm or more)
Self-tapping screw (o5 x 18 mm)
* 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, In a 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. * 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. * 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.
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Connection
2WARNING
* Commercially available parts
To prevent fire caused by a short in the wiring, connect a fusible link or breaker nearby the battery's positive terminal.
2CAUTION
CENTER UNIT (CD receiver, etc.) RCA cable ground terminal RCA cable*
Power control wire

Terminal cover
Battery wire*
Protective Fuse*
Battery
Ground wire*
LX-Bus connection
CENTER UNIT
To KENWOOD disc changer/ External optional accessory
Set the ID number of the Master amplifier to "0". You can connect up to 7 Slave amplifiers. Assign them ID numbers "1" to "7" and do not duplicate them.
2CAUTION
Control cable (option)
Power control wire
* Do not connect 2 Master amplifiers to the Center Unit. If done, you cannot control all amplifiers connected to the Center Unit. * The LX AMP and the sensor unit cannot be connected simultaneously. You must connect any of them at a time.
NOTE

Master amplifier

Extension wire*
S-video cable*

Slave amplifier 1

Slave amplifier 7

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* The total length of S-video cables you can connect is 14 meters (46 ft) maximum. If the cable length exceeds this limit, you cannot control amps from the Center Unit. * If you assign the same ID number to multiple amplifiers, they malfunction when you operate any of them from the Center Unit. * If you assign ID number "8" or "9" to a Slave amplifier, it is not recognized by the Center Unit. RCA cable*

Not more than 14m (46 ft)

* 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, winkers, and wipers work properly.
Left input

Right input
Lead terminal*
Subwoofer (L + R)

Controls

1 Fuse (25 A x 3) 2 Battery terminal 3 Ground terminal 4 Power control terminal
Controls the unit ON/OFF.
NOTE
# Power indicator
Lights when the POWER switch is turned On. The indicator flashes several seconds when the POWER switch is turned On or when the Protection function is activated.

$ INPUT SENSITIVITY control
NOTE

Set this control according to the pre-output level of the center unit connected with this unit. For the pre-output level, refer to the "Specifications" in the instruction manual of the center unit.

Controls the unit power. Be sure to connect it with all the systems.
5 Speaker output terminals
As this unit accepts speakers with a minimum impedance of 1 ohm, connect speakers with 1-ohm or higher impedance to these terminals.

% AMP CONT (amplifier control) switch

2CAUTION
The rated input of the speakers should be no less than the maximum output of the amplifier. Otherwise malfunction may result.
Used to bypass the circuit when you do not control the sound with the Amplifier Control.

* ON position:
6 RCA cable ground lead terminal 7 ID NUMBER switch
Allows you to control the sound with the Amplifier Control. Bypasses the Amplifier Control circuit.
NOTE
When using an RCA cable with a ground lead attached, connect the ground lead to this terminal. Sets an amp identification number (ID) to be used for amplifier control from the Center Unit. Assign ID Number "0" to an amplifier when you use it as the Master amplifier. Assign ID Numbers "1" to "7" to amplifiers when you use them as Slave amplifiers. Do not duplicate these numbers.
NOTE
* OFF position:
Amplifier control is possible even while OFF.
^ PHASE switch
When this switch is set "180" (Reverse) the speaker output phase is reversed. When this switch is set to "-6dB"/"-12dB", frequencies in the band set with the "B.R.F. FREQUENCY" control are rejected and eliminated. The band rejection allows to reduce resonance inside the vehicle compartment and standing waves. (page 8) When this switch is set to "ON", the inaudible, ultralow frequencies below the frequency set with the "ISF FREQUENCY" switch are cut off. This improves the reproduction performance of the speakers by eliminating unnecessary oscillations which will not become sound. Switches the cutoff frequency when the "ISF" switch is set to "ON". This control adjusts the frequency band output from this unit.
& BRF (band reject filter) switch
After you have changed ID numbers of amplifiers, turn Off the POWER switch of the Center Unit and turn it On again.
8 TO H/U terminal
* ISF (infrasonic filter) switch
After you have set the Master amplifier, connect it to the Center Unit. Used to connect to Slave amplifiers. Resets the microprocessor of the unit.
NOTE
9 REMOTE terminals 0 RESET button
( ISF FREQUENCY switch
The values you have set with the Amplifier Control are NOT reset.
) LPF(Low-Pass Filter) FREQUENCY control
! LINE IN terminal @ LINE OUT terminal
The signal that's input from the line input terminal is output.
@1 B.R.F. FREQUENCY control Sets the rejection frequency when the "BRF" switch is set to "-6dB"/"-12dB". (page 8)

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Amplifier Control System
Indicator

MENU
2/3

Display mode
You can set up the display items as follows:
4 Exit Menu mode
Press the [MENU] button for at least 1 second.
NOTE
1 Enter Menu mode
Press the [MENU] button. "VOLT"/"CURR"/"TEMP"/"FAN" is displayed.
2 Select a display item
Press the [2] or [3] button. The display items are switched in the following sequence. Display "VOLT" "CURR" "TEMP" "FAN" Information Indicates the source voltage (V). Indicates the current consumption (A). Indicates the internal temperature (F/C). Indicates the rotation speed of the cooling fan in 3 steps: "FAST", "SLOW" or "OFF".
When you hold down the [3] button 3 or more seconds during ID number display ("AMP"), message "MEMO" is displayed and you can register the values you have set with the Amplifier Control. To call the Amplifier Control's values, hold down the [2] button 3 or more seconds during ID number display ("AMP"). Then, you can recall the value when message "LOAD" is displayed.
Default
Resets all values you have set to the initial (default) values.
1 Enter Menu mode
Press the [MENU] button.
3 Exit Menu mode
Press the [MENU] button for at least 1 second.
NOTE
2 Select Default mode
Press the [MENU] button. Select the "DEFA" display.
When the internal temperature is -22F/-30C or less, "-22F"/"-30C" is displayed.
3 Resets the value to its default
Press the [3] button for at least 2 seconds. Message "----" is displayed, and the value is initialized.
Separate Amp Control
You can control sounds using the Amplifier Control function of the unit.
4 Exit Menu mode
Press the [MENU] button for at least 1 second.
NOTE
1 Enter Menu mode
Press the [MENU] button.
Volume offset value can not be initialized.
2 Select the Menu item
Press the [MENU] button. The setup items are displayed approximately 1 second first, then the set values are displayed.
Display Demonstration
The "VOLT"/"CURR"/"TEMP"/"FAN" items are displayed repeatedly. Press the [MENU] button for at least 2 seconds. The indicator flashes in the Demonstration mode.
3 Adjust the Menu item
Press the [2] or [3] button. The setup items and set values are switched as follows. Display Range "VOLT"/"CURR"/"TEMP"/"FAN" "BASS" 60/80/100/200 (Hz) "BA G" B-15 -- B+15 (dB) "BA Q" Q1.00/Q1.25/Q1.50/Q2.00 " EXT" "VOL" "TEMP" "DEFA" "AMP" ON/OFF -20 -- 0 (dB) FAHR (Fahrenheit) or CELS (Centigrade) 0--7 Adjustment Item For the operation method refer to 'Display mode' Bass Center Frequency Bass level Bass Q Factor When the bass extend is set to ON, low frequency response is extended by 20%. Volume offset The Fahrenheit or Centigrade temperature unit can be selected for the Display mode. For the operation method refer to 'Default' The ID Number you have assigned is displayed.
Canceling the Demonstration mode Press any button to cancel the Demonstration mode.
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Control an Amp from Center Unit
You can control the sound by controlling amplifiers from the Center Unit.
Messages that may be displayed on the Center Unit
When you are selecting an item with the Amp Control, an error status of the amplifier is displayed on the Center Unit. Display Informations "AMP x E-01"/"AMP x COND E-01" When the inside of the unit is overheating. When the unit has failed and direct current voltage is generated to the speaker's output. "AMP x E-02"/"AMP x COND E-02" NOTE Turn the POWER switch Off and release the protection. If the error message continues, consult to the KENWOOD's dealership. "AMP x E-03"/"AMP x COND E-03" "AMP OFF"
NOTE
1 Enter AMP Control mode
Select the AMP Control mode by following the 'AMP Control' procedure given on the Operation Manual of the Center Unit.
NOTE
Use the set item and value operation buttons by following the instructions given on the Operation Manual of the Center Unit.
2 Select an amp number to operate
Operate the desired set item with the Center Unit. Select the "AMP NO"/"AMP CONTROL NO" display.
NOTE
When the Center Unit is in the STANDBY mode, message "AMP OFF" is displayed and you cannot operate the set items.
When the speaker cord is shorted. When the speaker output is in contact with the vehicle ground. When you use the Amp Control in the Standby mode.
3 Set an ID number of Amp to operate
Set an amp's ID number on the Center Unit. You can select an ID number of "0" to "7" of connected amps.
Number "x" on the display indicates the amp's ID number.
4 Select the AMP Control item for adjustment
Select the desired set item on the Center Unit.
5 Adjust the AMP Control item
You can set a value of each item on the Center Unit. The set items and their values are switched and displayed as follows. Display Range "VOLT"/"CURR"/"TEMP"/"FAN" "VOLT" "CURR" "TEMP" "FAN" "BAS F"/"BASS FREQ" "BAS G"/"BASS GAIN" "Q FA"/"Q FACTOR" "EXT"/"BASS EXT" "VOL"/"VOL OFFSET" "AMP NO"/ "AMP CONTROL NO" Adjustment Item The amp state is displayed. Indicates the source voltage (V). Indicates the current consumption (A). Indicates the internal temperature (F/C). Indicates the rotation speed of the cooling fan in 3 steps: "FAST", "SLOW" or "OFF". 60/80/100/200 (Hz) Bass Center Frequency -15 -- +15 (dB) Bass level Q1.00/Q1.25/Q1.50/Q2.00 Bass Q Factor ON/OFF When the bass extend is set to ON, low frequency response is extended by 20%. -20 -- 0 (dB) Volume offset 0--7 Select an ID number of the amp you use.
6 Exit AMP Control mode
Releases the Amp Control mode by the Center Unit.
NOTE
When you have controlled the bass or treble of the sound using the Equalizer or DSP function of the Center Unit, and when you amplify the same frequency as that controlled by the Amplifier Control, the sound may be distorted due to an input overflow.
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Band Reject Filter
The acoustic properties of vehicle compartment tend to cause oscillation due to resonance or unclearness of sound due to standing waves at certain frequencies. The band reject filter can solve the problems of resonance or unclear sound with minimum influence on the sound quality because it eliminates only the frequencies causing resonance or standing waves. 0 dB
Adjustment method:
The band reject filter cuts only the limited frequencies to minimize influence on the sound quality. Therefore, its effect cannot be obtained unless the cutoff frequencies are set accurately to the frequencies causing resonance and standing waves. The band reject filter can be adjusted according to what you feel through your ears, but we recommend the use of a signal generator or a spectrum analyzer with a fine frequency measurement capability for the adjustment.
* Adjustment using a signal generator:
Frequency
Output a sine wave, vary its frequency to find the frequencies at which the vehicle compartment resonates or volume increases (standing waves occur), and set the B.R.F. FREQUENCY control to the position with which the resonance and standing waves disappear. Output white noise (sound in which all frequencies are at a certain level), find the peak frequency observed on the spectrum analyzer, and set the B.R.F. FREQUENCY control to the position with which the peak observed on the spectrum analyzer disappears.
* Adjustment using a spectrum analyzer:
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.
PROBLEM
No sound. (Blown fuse.) The output level is too small (or too large). The sound quality is bad. (The sound is distorted.)
POSSIBLE CAUSE
* * * * Input (or output) cables are disconnected. Protection circuit may be activated. Volume is too high. The speaker cord is shorted.
SOLUTION
Connect the input (or output) cables. Check connections by referring to "Protection function". 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 "Controls". * Turn the AMP CONT "ON". * Release the AMP Control mode of the Center Unit. * Always set the ID number of the Master amplifier to "0". * After you have changed the ID number of an amplifier, turn Off the POWER switch of the Center Unit first, then turn it On again. * * * *
* 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 sound does not change even when you have changed it with the Amplifier Control. The set value cannot be changed by the Amplifier Control of the unit. The Amplifier Control cannot be operated from the Center Unit.
* The switches may be set improperly. * The AMP CONT has been turned "OFF". * The AMP Control of the Center Unit is being used. * An incorrect ID number is used for the Master amplifier. * The ID number of the amplifier has been changed.
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Specifications
Specifications subject to change without notice. Audio Section......................................................................................................................................... KAC-X811D
RMS Power Output (+B = 14.4 V, CEA-2006) (4 ) (1.0 % THD+N) ...................................................................................................................................................................................................... 533 W (2 ) (1.0 % THD+N) ...................................................................................................................................................................................................... 919 W (1 ) (1.0 % THD+N) ................................................................................................................................................................................................... 1016 W Dynamic Power (+B = 14.4 V, CEA-2006) .......................................................................................................................................................................... 566 W Output Regulation (+B = 14.4 V, CEA-2006)..........................................................................................................................................under 0.2 dB (4 ) Signal to Noise Ratio (CEA-2006)...................................................................................................................................................................... 74 dBA (W/4 ) Signal to Noise Ratio (Bypass) (CEA-2006) .................................................................................................................................................. 74 dBA (W/4 ) Low Pass Filter Frequency (24 dB/oct.) ............................................................................................................................................ 50 - 200 Hz (variable) Infrasonic Filter Frequency (24 dB/oct.)....................................................................................................................................................... OFF / 15 / 25 Hz Phase Inverter ....................................................................................................................................................................................0 (Normal) / 180 (Reverse) Band Reject Filter Frequency................................................................................................................................................................. 40 - 200 Hz (variable) Frequency Response (+0, -3 dB)...........................................................................................................................................................................5 Hz - 200 Hz Sensitivity (rated output) (MAX.) ............................................................................................................................................................................................. 0.2 V Sensitivity (rated output) (MIN.) .............................................................................................................................................................................................. 5.0 V Input Impedance ............................................................................................................................................................................................................................ 10 k Max Power Output..................................................................................................................................................................................................................... 1600 W Rated Power Output (+B = 12.0 V) (4 ) (20 Hz - 200 Hz, 0.5 % THD)..................................................................................................................................................................300 W x 1 (2 ) (100 Hz, 0.5 % THD)....................................................................................................................................................................................600 W x 1 Rated Power Output (+B = 14.4 V) (4 ) (20 Hz - 200 Hz, 0.5 % THD)..................................................................................................................................................................400 W x 1 (4 ) (DIN45324, +B = 14.4 V) ..........................................................................................................................................................................400 W x 1 (2 ) (100 Hz, 0.5 % THD)....................................................................................................................................................................................800 W x 1 (1 ) (100 Hz, 1.0 % THD).................................................................................................................................................................................1000 W x 1 Low Pass Filter Frequency (24 dB/oct.) ............................................................................................................................................ 50 - 200 Hz (variable) Infrasonic Filter Frequency (24 dB/oct.)....................................................................................................................................................... OFF / 15 / 25 Hz Phase Inverter ....................................................................................................................................................................................0 (Normal) / 180 (Reverse) Band Reject Filter Frequency................................................................................................................................................................. 40 - 200 Hz (variable) Frequency Response (+ 0 , - 3 dB).......................................................................................................................................................................5 Hz - 200 Hz Signal to Noise Ratio...................................................................................................................................................................................................................100 dB Sensitivity (rated output) (MAX.) ............................................................................................................................................................................................. 0.2 V Sensitivity (rated output) (MIN.) .............................................................................................................................................................................................. 5.0 V Input Impedance ............................................................................................................................................................................................................................ 10 k
Audio Section....................................................................................................................................... KAC-PS811D
Amplifier Control Section (EQ) ...............................................................................................KAC-X811D/PS811D
Bass frequency .............................................................................................................................................................................................. 60 / 80 / 100 / 200 Hz Bass level ........................................................................................................................................................................................................................... -15 -- +15 dB Bass Q factor.................................................................................................................................................................................................1.00 / 1.25 / 1.50 / 2.00 Operating Voltage ........................................................................................................................................................................... 14.4 V (11 - 16 V allowable) Current Consumption (+B = 12.0 V, 100 Hz, 10 % THD, 4 )......................................................................................................................................55 A Dimensions (W x H x D) ..........................................................................................................................................................................386 x 61 x 259.5 mm ............................................................................................................................................................................................15-3/16 x 2-3/8 x 10-3/16 inch Installation Size (W x H x D) ..................................................................................................................................................................... 386 x 61 x 265 mm .............................................................................................................................................................................................. 15-3/16 x 2-3/8 x 10-3/8 inch Weight .......................................................................................................................................................................................................................... 4.07 kg (8.97 lbs)
General .....................................................................................................................................KAC-X811D/PS811D
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