User manual KENWOOD KAC-745

[. . . ] Model KAC-745 Serial number © PRINTED IN USA B64-1975-00 (KM/EM) Safety precautions 2WARNING s 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. · 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 terminal. Use a fuse with a capacity 10A greater than the amplifier fuse capacity. [. . . ] · When more than one power amplifier are going to be used, use a power supply wiring wire and protective fuse of greater current-handling capacity than the total maximum current drawn by each amplifier. Remove the ignition key and disconnect the negative - terminal of the battery to prevent short circuits. Connect the power wire, power control wire and grounding wire following this order. Connect the negative - terminal of the battery. 2WARNING s Accessories Part name Terminal cover (Power terminal) Self-tapping screws (ø4 ´ 16 mm) Speaker level input cable External View Number of Items 1 4 1 To prevent injury or fire, take the following precautions: · When extending the ignition, battery, or ground wires, make sure to use automotive-grade wires or other wires with a 5mm2 (AWG10) or more to prevent wire deterioration and damage to the wire coating. · To prevent a short circuit, never put or leave any metallic objects (such as coins or metal tools) inside the unit. · If the unit starts to emit smoke or strange smells, turn off the power immediately and consult your Kenwood dealer. · Do not touch the unit during use because the surface of the unit becomes hot and may cause burns if touched. 2CAUTION Installation 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. can be considered. 2CAUTION To prevent fire caused by a short in the wiring, connect a fusible link or breaker nearby the battery's positive terminal. 2CAUTION 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 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. · Install this unit in a location which allows heat to easily dissipate. · 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 fans to decrease the internal temperature. Be careful not to block the cooling fan openings when installing the unit. 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. Self-tapping screw (ø4 ´ 16 mm) s Cleaning the unit If the front panel gets dirty, turn off the power and wipe the panel with a dry silicon cloth or soft cloth. 2CAUTION s Power terminal (234) 8 2 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. Connect to their respective terminals the power supply wire, and ground wire, all of which pass through the associated terminal cover. connections are complete, place the cover on (thickness : 15 mm or more) the terminal section. Controls POWER IN ! GND SPEAKER P. CON OUTPUT BRIDGED LEFT RIGHT FUSE(30Ax2) 1 BATT. 2 POWER AMPLIFIER 3 4 1 2 34 5 BASS BOOST 6dB OFF 12dB EXPANDER LOW PASS FILTER OPERATION OFF ON OFF ON STEREO MONO(Lch) 0 !@ # $ (MIN)5 INPUT SENSITIVITY(V) 40 20 0. 3 10 (W) 0. 2(MAX) 0. 5 STEREO/BRIDGEABLE AMPLIFIER Cooling fan Operations of the following control and switches are required in accordance with the center unit and speakers connected with this unit. 1 Fuse (30 A ´ 2) 2 Battery terminal 3 Ground terminal 4 Power control terminal 5 SPEAKER OUTPUT terminals · Stereo Connections: When you wish to use the unit as a stereo amplifier, stereo connections are used. · Bridged Connections: When you wish to use the unit as a high-output monaural amplifier, bridged connections are used. (Make connections to the LEFT channel (+) and the RIGHT channel (­) SPEAKER OUTPUT terminals. ) 6 BASS BOOST switch Setting this switch to "+6dB" or "+12dB" emphasizes the bass. 7 EXPANDER switch When this switch is turned ON the dynamic range is increased. System examples s 2-channel system CENTER UNIT L R L R 30 30 KAC-745 MAXIMUM POWER 6 7 8 9 NOTE Power indicator 8 LOW PASS FILTER switch These switches allow filtering of the speaker output signals. Power indicator When the power is turned on, the Power indicator lights. If the Power indicator does not light when the power is turned on, the protection function may be activated. [. . . ]