User manual KENWOOD KAC-723

[. . . ] Connect the input and output cables of the units. Connect the center unit and this unit according to the required application. Connect the speaker cables and sigma servo feed back cables. Connect the power cable, power control cable and grounding cable following this order. [. . . ] Sharing the negative cable of the speaker or grounding speaker cables 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. Installation Self-tapping screw (ø4 ×16 mm) , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Installation board, etc. (thickness : 15 mm or more) Since the power amplifier has no parts which require operation, it can be installed at a position away from the driver's seat without any hindrances. As generally accepted positions for its installation, places such as inside the trunk, etc. 2CAUTION · 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. · The power control cable may not be connected to this unit. · The grounding cable of the center unit (cassette receiver, CD receiver, etc. ) may not be connected with a metallic part which is electrically connected with the negative terminal of the battery. English 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. Left input Left output (White) Right output (Red) CENTER UNIT (Cassette receiver, CD receiver, etc. ) RCA cable (Commercially available part) Right input Power control cable (Commercially available part) 15Hz OFF 25Hz INFRASONIC LPF INPUT FREQUENCY(Hz) SENSITIVITY(V) 100 70 50 200 150 1 2 3 4 0. 5 0. 3 LINE IN L GND R SPEAKER LEVEL INPUT LEFT RIGHT 5 0. 2 MONO POWER AMPLIFIER D GN RCA cable ground terminal 2CAUTION When using an RCA cable with Do not use this terminal for power source a ground lead attached, connect grounding. This unit will be damaged if the the ground lead to this terminal. power source grounding wire is connected to this terminal. s Speaker level input connection Left output Right output T PU IN L VE HT LE RIG Genuine-accessory car stereo ACC Car fuse box + - R KE EA T SP LEF Lead terminal (Commercially available part) Left input Right input Battey 15Hz OFF 25Hz INFRASONIC LPF INPUT FREQUENCY(Hz) SENSITIVITY(V) 100 70 50 200 150 1 2 3 4 0. 5 0. 3 LINE IN L GND R SPEAKER LEVEL INPUT LEFT RIGHT 5 0. 2 MONO POWER AMPLIFIER 2CAUTION · 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. · 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. · 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 genuineaccessory car stereo is switched ON/OFF. 6 English s Power and Speakers cable connection Distribute the speaker cables and sigma servo cables along the same paths. Round terminal (Small) Power control cable (Commercially available part) Subwoofer FUSE(20A) POWER IN BATT 20 GND SERVO SERVO P. CON(REMOTE) SPEAKER OUTPUT SERVO FUSE(20A) 20 Terminal cover Battery cable (Commercially available part) Power control (REMOTE) lead terminal Round terminal (Medium) Ground cable (Commercially available part) Round terminal (Large) Protective Fuse 2WARNING Battery + - To prevent fire caused by a short in the wiring, connect a fusible link or breaker nearby the battery's positive terminal. 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 wire. [. . . ] Once the connections are complete, place the cover on the terminal section. Example: One Power Amplifier Is Used Maximum Current Drawn 28 A Protective Fuse 40 A ×1 [20 A ×2] Cross-sectional Area of Wiring 5 mm2 (AWG 10) or greater ×1 Wire (AWG) 25 A 50 A 25 A 25 A 25 A English 7 Sigma servo feed back The sound reproduced through conventional amplifiers is distorted due to the counterelectromotive force produced in the oscillating system of the speaker. The counterelectromotive force is particularly high with the woofer which requires a large drive mass. The sigma servo connection reduces distortion caused by the counterelectromotive force by including the circuit up to the speaker terminals in the negative feedback loop. This makes it possible to drive speakers with more fidelity to the input signals and create a sharp bass sound image with few feeling of noise interference. NOTE The speaker cables and sigma servo cables should be distributed along the same paths. [. . . ]