User manual KENWOOD KAC-929

[. . . ] · Connect the speaker wire again so that it is not pinched by anything. · Set switches properly by referring to "System examples". KAC-929 POWER AMPLIFIER INSTRUCTION MANUAL The output level is too small (or too large). (The sound is distorted. ) The input sensitivity adjusting control is not set to the correct position. · The speakers wire are connected with wrong + / polarity. [. . . ] · Do not open the top or bottom covers of the unit. · 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. · 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 Fuse Protective Fuse Cross-sectional Area of Wiring Wire (AWG) 35 A 30 A ´ 2 70 A ´ 1 [35 A ´ 2] 5 mm2 (AWG 10) or greater ´ 1 35 A 35 A 35 A · 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 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). 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. 4 4 4 4 s Speaker level input terminals ($) · The genuine-accessory car stereo shall have a maximum power output of no more than 40 W. · Do not connect the speaker output leads from a power amplifier (Optional) to the speaker level 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 level 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 genuine-accessory car stereo is switched ON/OFF. · If you experience problems during installation, consult your Kenwood dealer. [. . . ] Use the diagram on the right as a guide. Connection NOTE *. . . Commercially available parts For safe installation, read "Installation procedure" before starting work. Left speaker Right speaker 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. ) Right Left RCA cable* Car fuse box ACC Gray Gray/Black White/Black White 6 BASS BOOST 6dB OFF 12dB 7 OFF ON 8 OFF ON 9 STEREO MONO(Lch) EXPANDER LOW PASS FILTER OPERATION s Subwoofer system CENTER UNIT L R L R Left speaker Right speaker Battery @ Subwoofer D GN 6 BASS BOOST 6dB OFF 12dB 7 OFF ON 8 OFF ON 9 STEREO MONO(Lch) EXPANDER LOW PASS FILTER OPERATION Power control wire* s 1-channel system L L R L R L R s Speaker stereo connection Left speaker Lead terminal* Right speaker POWER IN s Speaker bridge connection CENTER UNIT R 4 FUSE(30Ax2) BATT. Lead terminal* BRIDGED LEFT POWER IN RIGHT 4 FUSE(30Ax2) BATT. L R GND SPEAKER P. CON OUTPUT GND SPEAKER P. CON OUTPUT BRIDGED LEFT RIGHT 30 30 30 30 5 LE FT ED IDG BR R T IGH POWER AMPLIFIER 5 LE FT ED IDG BR RIG HT POWER AMPLIFIER 6 BASS BOOST 6dB OFF 12dB 7 OFF ON 8 OFF ON 9 STEREO MONO(Lch) EXPANDER LOW PASS FILTER OPERATION s Tri-mode High pass C L Crossover Frequency Subwoofer (L + R) 0 dB -3 dB L C Left speaker Right speaker Subwoofer CENTER UNIT L R L R s Power wire connection POWER IN C FUSE(30Ax2) BATT. GND SPEAKER P. CON OUTPUT BRIDGED LEFT RIGHT 30 30 6 BASS BOOST 6dB OFF 12dB 7 OFF ON 8 OFF ON 9 STEREO MONO(Lch) Frequency 159000 159000 C= (µF) = = 331. 25 µF fc x R 120Hz x 4 159 x R 159 x 4 L= (mH) = = 5. 3 mH fc 120Hz 2CAUTION · If you wish to bridge-connect a speaker, the speaker impedance must be no less than 4 ohms. Connecting a speaker with an impedance lower than 4 ohms may damage the unit. · Be sure to connect capacitors to speakers to which high frequencies will be passed. Failure to do so will result in a drop of the combined impedance with the subwoofer. [. . . ]