User manual KENWOOD KAC-819

[. . . ] 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". KAC-819 MONO POWER AMPLIFIER (Blown fuse. ) INSTRUCTION MANUAL The output level is too small (or too large). [. . . ] · 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 To prevent fire caused by a short in the wiring, connect a fusible link or breaker nearby the battery's positive terminal. 2CAUTION Example: One Power Amplifier Is Used Maximum Current Drawn Protective Fuse Cross-sectional Area of Wiring Wire (AWG) 20 A 20 A 20 A 20 A 21 A 40 A ´ 1 [20 A ´ 2] 5 mm2 (AWG 10) or greater ´ 1 · If you experience problems during installation, consult your Kenwood dealer. · If the unit does not seem to be working right, consult your Kenwood dealer. 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. · Use speakers that have an impedance of 2½ 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. 4½ 4½ 4½ 4½ FCC WARNING This equipment may generate or use radio frequency energy. Changes or modifications to this equipment may cause harmful interference unless the modifications are expressly approved in the instruction manual. The user could lose the authority to operate this equipment if an unauthorized change or modification is made. · If sound is not output normally, immediately turn power off and check connections. Be sure to perform the sigma servo connection correctly. · Be sure to make correct connections of the sigma servo terminals. · 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 cables or connectors are touching the car body. Do not remove caps from unconnected cables 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. s Power terminal (23) Connect to their respective terminals the power supply wire, and ground wire, all of which pass through the associated terminal cover. Once the connections are complete, place the cover on the terminal section. · 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. [. . . ] Be specially careful in this when connecting speakers in a parallel configuration. For safe installation, read "Installation procedure" before starting work. s RCA cable connection CENTER UNIT (Cassette receiver, CD receiver, etc. ) s Speaker level input connection Genuine-accessory car stereo (No line output center unit etc. ) RCA cable* Speaker # ! K EA T SP LEF ER LE VE P IN L IGHT R U T D GN 15Hz OFF 25Hz OFF 6dB 12dB LINE IN 120 150 1 170 2 3 4 0. 5 0. 3 SPEAKER LEVEL INPUT LEFT R RIGHT INFRASONIC BASS BOOST 100 70 50 L GND 200 5 0. 2 SUBWOOFER AMPLIFIER LPF FREQUENCY(Hz) INPUT SENSITIVITY(V) ACC Power control wire* Car fuse box Battery s Basic sigma servo connection Lead terminal* s Series connection 4 FUSE (30A) POWER IN BATT Lead terminal* 56 SP EA K ER ·S OU TP UT ER VO II · SERVO II P. CON(REMOTE) SPEAKER OUTPUT · SERVO II ·S 30 GND ER VO II 2CAUTION Make this wire as short as possible. 23 s Parallel connection (1) Subwoofer Terminal cover Distribute the speaker wires and sigma servo wires along the same paths. Battery wire* Ground wire* 2CAUTION The speaker wires connected to this unit should be thick enough to supply the current capacity of two speakers. s Parallel connection (2) 2CAUTION This connection is possible only when the speakers are identical and the speaker wires are also of the same type and length. Protective Fuse* + - s Simplified sigma servo connection In case any of the connection examples above cannot be used or if the speakers cannot be connected to the speaker terminals, connect them to this unit as shown in the figure. Battery s Speaker level input terminals (#) When the genuine-accessory car stereo power is turned ON/OFF, check that the power to this unit has followed suit. In some cases, the power control is not correctly operated by the genuine-accessory car stereo. If this is the case, connect the ACC or power control signal to the P. CON(REMOTE) terminal. [. . . ]