User manual KENWOOD KAC-PS300T

[. . . ] Also avoid places with too much dust or the possibility of water splashing. 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. [. . . ] 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. After installing the unit, check to make sure that electrical equipment such as the brake lamps, turn signal lamps and windshield wipers operate normally. The unit is a 5-channel amplifier incorporating 2 stereo amplifiers and 1 monaural amplifier in a single body. The stereo amplifier on one side is called amplifier A, while the one on the other side is amplifier B. This unit is compatible with a large variety of systems by combining the switches and functions described in the following. The filter outputs the band of higher frequencies than the frequency set with the HPF FREQUENCY control. The filter outputs the band of lower frequencies than the frequency set with the LPF FREQUENCY control. Adjust this control according to the pre-out level of the center unit connected to this amplifier. As this unit accepts speakers with a minimum impedance of 2 ohms, connect speakers with 2-ohm or higher impedance to these terminals. 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. 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. If sound is not output normally, immediately turn power off and check connections. 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. Do not remove caps from unconnected wires or connectors to prevent short circuits. 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. If it's connected to the vehicle's wiring harness, it can cause blown fuses etc. [. . . ] 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, amplifier SUB), 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. Example: When it is required to set a crossover frequency of 120 Hz using speakers with an impedance of 4 ohms. [. . . ]