SUBWOOFER POWER AMPLIFIER
KAC-9152D KAC-9102D KAC-8152D KAC-8102D
INSTRUCTION MANUAL
© B64-3010-00/00 (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 mm² (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.
2CAUTION
To prevent damage to the machine, take the following 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.
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.
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.
•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.
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 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 mm² (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 1Ω/ 2Ω 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.
(KAC-9152D: 1Ω or greater, KAC-9102D/8152D/8102D: 2Ω or greater)
4Ω
4Ω 4Ω
4Ω
8 Ω |
2 Ω |
Combined impedance
2 English
Installation
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NOTE
•The rear side cover is fixed and cannot be removed.
Front side cover |
Hexagon socket |
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head cap screw |
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(M4 × 8 mm) |
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Hexagon Wrench |
Self-tapping screw (ø5 × 18 mm)
Installation board, etc. (thickness : 15 mm or more)
■ Remote controller (KAC-9152D/8152D only)
Mounting bracket
Remote controller
Self-tapping screw (ø2.6 × 12 mm)
Accessories
Part name |
External View |
Number of Items |
Self-tapping screws |
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4 |
(ø5 × 18 mm) |
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Terminal cover (Power terminal) |
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1 |
Speaker level input cable |
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1 |
Hexagon Wrench |
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1 |
KAC-9152D/8152D only |
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Part name |
External View |
Number of Items |
Remote cable |
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1 |
Remote controller |
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1 |
Mounting bracket |
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1 |
Self-tapping screws |
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2 |
(ø2.6 × 12 mm) |
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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 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 remote controller. (KAC-9152D/8152D only)
9.Connect the negative -terminal of the battery.
2CAUTION
•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.
•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.
English 3
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