User manual KENWOOD KAC-X4D BROCHURE

[. . . ] CAUTION 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. [. . . ] 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. 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. ⷠThe impedance of the speakers that are going to be connected should be 2 or greater (for stereo connections), or 4 or greater (for bridged connections). When more than one set of speakers 4 are going to be used, calculate the combined 4 4 impedance of the speakers and then connect 4 suitable speakers to the amplifier. When the unit is used in the ACC ON position without turning the engine ON, it depletes the battery. The protection function is activated in the following situations: 4 This unit is equipped with a protection function for 4 protecting this unit and your speakers from various accidents or problems that can occur. When the protection function is triggered, the 4 PROTECTION indicator lights and the amplifier stops 4 operating. 4 4 · When a speaker wire may be short-circuited. When the unit malfunctions and a DC signal is sent to the speaker output. 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. Connect the power wire, power control wire and grounding wire following this order. 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. Do not mount the unit in a place where the cooling fan and ducts of the unit are blocked. 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. [. . . ] When the power is turned on, the Power indicator lights. Lights this indicator when the protection function is activated. (See page 3) Lights this indicator when the internal temperature is high. What might appear to be a malfunction in your unit may just be the result of slight misoperation or miswiring. [. . . ]