User manual KENWOOD KAC-6401 annexe 1

[. . . ] (thickness : 15 mm or more) 2CAUTION · Do not install in the below locations; (Unstable location, In a location that interferes with driving, In a location that gets wet, In a dusty location, In a place that gets hot, In a place that gets direct sunlight, In a location that gets hit by hot air) · Do not install the unit under the carpet. · 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. [. . . ] 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. English 3 Controls / Indicator 5 40 30 20 10 (W) 1 2 3 4 5 1 FILTER switch (A. ch/B. ch) This switch allows to apply high-pass or low-pass filtering to the speaker outputs. 5 INPUT SENSITIVITY control (A. ch/B. ch) 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 genuineaccessory car stereo. The sensitivities of amplifiers A and B can be adjusted independently regardless of the position of the input selector switch. NOTE For the pre-output level or the maximum power output, refer to the <Specifications> in the instruction manual of the center unit. · HPF (High-Pass Filter) position: The filter outputs the band of higher frequencies than the frequency set with the FILTER FREQUENCY control. · OFF position: The entire bandwidth is output without filtering. · LPF (Low-Pass Filter) position: The filter outputs the band of lower frequencies than the frequency set with the FILTER FREQUENCY control. 2 OPERATION switch (A. ch/B. ch) This switch is used to select the operation mode of the amplifier. · STEREO position: The amplifier can be used as a stereo amplifier. · 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. ) 3 INPUT SELECTOR switch This switch selects the input method of the signals to be amplified by amplifiers A and B. · A B position: Amplifies both of the signals input to amplifiers A and B. · A position: Amplifies only signal input amplifier A with both amplifiers A and B. 4 FILTER FREQUENCY control (A. ch/B. ch) Sets the cutoff frequency when the FILTER switch is set to LPF or HPF. 4 English 6 6 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. Check whether there is any indication of trouble. The protection function is activated in the following situations: 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. · When the unit malfunctions and a DC signal is sent to the speaker output. · When the internal temperature is high and unit won't operate. (Use a power wiring cord with a diameter of 5 mm² (AWG 10) or greater. ) · 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. To prevent fire caused by a short in the wiring, connect a fusible link or breaker nearby the battery's positive terminal. 2CAUTION · 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. · Check that no unconnected wires or connectors are touching the car body. Do not remove caps from unconnected wires 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. 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). [. . . ] slope Crossover Frequency 0 dB -3 dB L C Coil (L): Passes low frequencies and blocks high frequencies. (Low pass) Capacitor (C): Passes high frequencies and blocks low frequencies. (High pass) C= L= 159000 (µF) fc x R 159 x R (mH) fc fc=Cut of Frequency (Hz) R=Speaker Impedance () Frequency Example: When it is required to set a crossover frequency of 120 Hz using speakers with an impedance of 4 ohms. Prepare commercially-available coil and capacitor with the closest ratings to the results calculated from the formula above. [. . . ]