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English

  

3

Installation

2

 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, 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.

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

Self-tapping screw
(ø4 × 16 mm)

330 mm

236 mm

Ø4.6

218.4 mm

230 mm

 Accessories

Part name

External 

View

Number of 

Items

Self-tapping screws 
(ø4 × 16 mm)

4

Terminal cover 
(Power terminal)

1

Speaker level input 
cable

1

Cooling fan
(KAC-M845)

Cooling fan
(KAC-M845)

B64-3924-00̲00̲M̲1English.indd   3

B64-3924-00̲00̲M̲1English.indd   3

07.11.15   11:29:31 AM

07.11.15   11:29:31 AM

Summary of Contents for KAC-M645

Page 1: ... B64 3924 00 00 MV 4 3 2 CHANNEL POWER AMPLIFIER KAC M845 KAC M645 INSTRUCTION MANUAL B64 3924 00 00 M 1English indd 1 B64 3924 00 00 M 1English indd 1 07 11 15 11 29 30 AM 07 11 15 11 29 30 AM ...

Page 2: ... 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 To prevent battery from running out 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 Cleaning the unit If the front panel gets dirty turn off the p...

Page 3: ...al 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 secu...

Page 4: ...l L R and the gain is enhanced 3 INPUT SENSITIVITY control A ch B ch 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 and B can be adjusted independently 4 B ch LPF FREQUENCY control Sets the cutoff frequency when...

Page 5: ...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 termina...

Page 6: ... genuine accessory car stereo is switched ON OFF Speaker output terminals A ch B ch Stereo Connections 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 Make connections to the LEFT channel 9 and the RIGHT channel SPEAKER OUTPUT terminals The spea...

Page 7: ...ections A channel Speaker Bridged 40 25 Battery Ground wire Battery wire Protective Fuse Lead terminal Power wire connection Terminal cover B channel Left speaker B channel Right speaker B channel Speaker Bridged Power control wire KAC M645 KAC M845 B64 3924 00 00 M 1English indd 7 B64 3924 00 00 M 1English indd 7 07 11 15 11 29 37 AM 07 11 15 11 29 37 AM ...

Page 8: ...inched by a screw in the car body The switches may be set improperly Connect them properly checking the 9 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 Specifications Audio Section KAC M845 KAC M645 Max Power Output 720 W 180 W 4 500 W 125 W 4 Rated Power Output Normal 4 Ω 20 Hz 20 kHz 1 THD 60 W ...

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