User manual KENWOOD KAC-528

[. . . ] · 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 short circuits when replacing a fuse, first disconnect the wiring harness. External View Number of Items 1 2 1 1 4 2 Protection function 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. s Power indicator: When the power is turned on, the Power indicator lights. [. . . ] 2CAUTION The rated input of the speakers should be no less than the maximum output of the amplifier. Otherwise malfunction may result. 3 OPERATION switch This switch allows selection of the amplification method of input signals. KAC-728/528 OPERATION STEREO MONO(Lch) KAC-628 OPERATION L+R STEREO MONO(Lch) · STEREO position The amplifier can be used as a stereo amplifier. · L+R position (KAC-628 only) The input left and right signals are combined before being amplified. Use this position when the unit is used for subwoofer speakers or the L+R (monaural) sound is required. · MONO (Lch) position Amplifies the signal input from the left side only. Set to this position and make bridged connections to use as a high-power monaural amplifier. (The input right signal is not output. ) 4 INPUT SENSITIVITY control 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 10 0. 5 0. 3 right as a guide. NOTE 15 1. 0 For the pre-output level or MIN MAX the maximum power output, 25 (W) refer to the "Specifications" in the instruction manual of the center unit. 5 Connection s RCA cable connection 2CAUTION Do not connect cables and leads to both RCA cable input jacks and the speaker input terminals simultaneously, for this may cause malfunction or damage. Right input Left input RCA cable ground terminal OPERATION STEREO MONO(Lch) 0. 5 1. 0 0. 3 FILTER SPEAKER LEVEL INPUT LEFT RIGHT LINE IN L R D GN OFF LPF GND MIN MAX INPUT SENSITIVITY(V) To Power control (REMOTE) terminal CENTER UNIT (Cassette receiver, CD receiver, etc. ) Left output (White) RCA cable (Commercially available part) Right output (Red) RCA cable ground terminal When using an RCA cable with a ground lead attached, connect the ground lead to this terminal. 2CAUTION Do not use this terminal for power source grounding. This unit will be damaged if the power source grounding wire is connected to this terminal. s Speaker level input connection Connect the unit by inserting it in the connection between the genuine-accessory car stereo and speakers. 2CAUTION Do not connect cables and leads to both RCA cable input jacks and the speaker input terminals simultaneously, for this may cause malfunction or damage. Left input EAT SP LEF ER K P IN L IGHT VE R LE T U Right input FILTER OFF LPF OPERATION STEREO MONO(Lch) 0. 5 1. 0 0. 3 SPEAKER LEVEL INPUT LEFT RIGHT LINE IN L R GND MIN MAX INPUT SENSITIVITY(V) Lead terminal (Commercially available parts) Genuine-accessory car stereo 2CAUTION To Power control (REMOTE) terminal Left output Right output Battery 6 · The genuine-accessory car stereo shall have a maximum power output of no more than 25 W. · Do not connect the speaker output leads from a power amplifier (Optional) to the speaker input terminals of this unit, for this may cause malfunction or damage. · Connect the power control lead to a power supply which can be turned ON/OFF by the ignition key switch (ACC line). With this connection, shock noise may be generated when the power of the genuine-accessory car stereo is switched ON/OFF. s Speakers cable connection (Stereo Connections) Left output POWER IN Right output FT ED IDG BR RIG HT GND BATT P. CON(REMOTE) BRIDGED LE RIGHT SPEAKER OUTPUT LEFT POWER AMPLIFIER Lead terminal (Commercially available parts) Right speaker Left speaker (Bridged Connections) ED IDG BR RIG HT POWER IN GND BATT P. CON(REMOTE) BRIDGED LE RIGHT SPEAKER OUTPUT FT LEFT POWER AMPLIFIER Lead terminal (Commercially available parts) s 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. · 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 are going to be used, calculate the combined impedance of the speakers and then connect suitable speakers to the amplifier. Examples: Model KAC-728 KAC-628 KAC-528 200W (4) Stereo Connections (4) 200 W or greater 100 W or greater 70 W or greater 200W (2) 200W (2) Bridged Connections (4) 600 W or greater 300 W or greater 200 W or greater 100W (8) 100W (8) 200W (4) 200W (4) 200W (4) 4 Maximum output of the amplifier Combined impedance 4 Rated input power and impedance of the speakers 4 7 Connection s Power cable connection 2WARNING To prevent fire caused by a short in the wiring, connect a fusible link or breaker nearby the battery's positive terminal. POWER IN GND BATT P. CON(REMOTE) BRIDGED LEFT RIGHT SPEAKER OUTPUT Power terminal POWER AMPLIFIER Round terminal (Small) Round terminal (Medium) Terminal cover CENTER UNIT Car fuse box Power control cable (Commercially available parts) Battery cable (Commercially available parts) ACC Ground cable (Commercially available parts) Round terminal (Large) Protective Fuse Battery Power terminal Connect to their respective terminals the power control cable, power supply cable, and ground cable, all of which pass through the associated terminal cover. Once the connections are complete, place the cover on the terminal section. Wiring · 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 cable. · Do not allow the cord to directly contact the edge of the iron plate by using Grommets. [. . . ] The input sensitivity adjusting control is not set to the correct position. · The speakers cable are connected with wrong + / polarity. · A speaker cable is pinched by a screw in the car body. · The switches may be set improperly. [. . . ]