Kenwood KAC-929 Car Stereo System User Manual
Contents
1. Connect the speaker wires 5 Connect the power wire power control wire and grounding wire following this order 6 Install the unit in the car 7 Connect the negative terminal of the battery AWARNING To prevent fire caused by a short in the wiring connect a fusible link or breaker nearby the battery s positive terminal ACAUTION e Be sure to turn the power off before changing the setting of any switch e If the fuse blows check wires for shorts then replace the fuse with one of the same rating e 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 e 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 e After installation check that the brake lamps winkers and wipers work properly E Speaker level input terminals 4 e The genuine accessory car stereo shall have a maximum power output of no more than 40 W e Do not connect the speaker output leads from e When making a hole under a seat inside the trunk a power amplifier Optional to the speaker or somewhere else in the vehicle check that there level input terminals of this unit for this may is nothing hazardous on the opposite side such as a cause malfunction or damage gasoline tank brake pipe or wiring harnes2. SPEAKER OUTPUT terminals e Stereo Connections When you wish to use the unit as a stereo amplifier stereo connections are used e 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 BASS BOOST switch Setting this switch to 6dB or 12dB emphasizes the bass EXPANDER switch When this switch is turned ON the dynamic range is increased System examples E 2 channel system LOW PASS FILTER switch These switches allow filtering of the speaker output signals e OFF position The entire bandwidth is output without filtering e ON position The filter outputs the band of lower frequencies than the frequency set with the LPF FREQUENCY control OPERATION switch This switch allows selection of the amplification method of input signals e STEREO position The amplifier can be used as a stereo amplifier e 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 LPF FREQUENCY control Sets the cutoff frequency when the LOW PASS FILTER switch is set to ON INPUT SENSITIVITY control Set this control according to the pre output level of the center unit connected with this unit or to the maxi
3. won t operate e When a ground wire of the center unit cassette receiver CD receiver etc or this unit is not connected to a metal part serving as an electrical ground passing electricity to the battery s negative terminal _ Commercially available parts CENTER i so Left speaker UNIT a EY 8O Right speaker EXPANDER LOWPASS FILTER OPERATION OFF ON OFF ON STEREO MONO Lch BASS BOOST 6dB OFF 12dB J J E Subwoofer system CENTER BASS BOOST EXPANDER LOW PASSFILTER OPERATION OFF 12dB OFF ON OFF ON STEREO MONO LcH i C E 1 channel system CENTER UNIT EXPANDER LOWPASS FILTER OPERATION OFF ON OFF ON STEREO MONO Lch BASS BOOST 6dB OFF 12dB q J D E Tri mode CENTER EXPANDER LOWPASS FILTER OPERATION OFF ON OFF ON STEREO MONO Lch BASS BOOST 6dB OFF 12dB J L Principle of Tri mode Method of frequency band division usin
4. Eina aR aA Eia 5 0 V Meee ees 10 kQ 50 Hz 200 Hz variable E E E a T 6 12 dB E Wiring e f 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 e Do not allow the wire to directly contact the edge of the iron plate by using Grommets e 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 Do not turn the power on if the ground wire is not connected e Connect the power cable directly to the battery It can cause blown fuses if you connect to the vehicle wring harness e Connect the cable protection fuse close to the battery Use a fuse with a capacity 10A greater than the amplifier fuse capacity e Use a heat resistant vehicle type cable Use a cable with a current capacity 20A greater than the amplifier fuse capacity e 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 Example One Power Amplifier Is Used 30Ax2 Fuse Protective Fuse 70Ax1 35 Ax 2 5 mm AWG 10 or greater x 1 Cross sectional Area of Wiring Wire AWG oa beani 5A y A E Speaker Selection e The rated input power of the speakers that are going to be connected should be greater tha
5. Troubleshooting Guide What might appear to be a malfunction in your unit may just be the result of slight misoperation or miswiring Before calling service first check the following table for possible problems PROBLEM POSSIBLE CAUSE SOLUTION No sound e Input or output cables are e Connect the input or output No sound from one side disconnected e Protection circuit may be activated Blown fuse e Volume is too high e The speaker cord is shorted The output level is too small or too large position The sound quality is bad The sound is distorted polarity e A speaker wire is pinched by a screw in the car body e The switches may be set improperly Specifications The input sensitivity adjusting control is not set to the correct e The speakers wire are connected with wrong cables e Check connections by referring to Power indicator e Replace the fuse and use lower volume e After check the speaker cord and fixing the cause of the short replace the fuse Adjust the control correctly referring to Controls e Connect them properly checking the of the terminals and wires well e Connect the speaker wire again so that it is not pinched by anything e Set switches properly by referring to System examples Specifications subject to change without notice Audio Section Max Power Output 4 Q Noma lassen iaon a e aa ii 3 010 e e E E ee E eee ee er
6. e Rated Power Output 4 Q Normal 20 Hz 20 kHz 0 08 THD n se Normal DIN45324 B 14 4 V Bridge 1 KHZ 0 8 THD isisisi Rated Power Output 2 Q NormahiT KHZ 0 8 THD cssccccccusessecedeciendevecaciee Frequency Response 0 3 dB ecceeeeeeeeeeeeee Signal to Noise Ratio Sensitivity MAX rated output MIN rated output oo ences Input Impedance Low Pass Filter 18 dB oct Bass Boost Circuit 90 HZ 0 0 cccccecccseeecseeeensseeee General Operating Voltage 11 16 V allowable Current Consumption 1 kHz 10 THD Dimensions W x H x D mm 0 inch WVOIQ Ie iitcsi 22060 vesgsauencses e a AEE EEA ENEA Safety precautions AWARNING To prevent injury or fire take the following precautions e When extending the ignition battery or ground wires make sure to use automotive grade wires or other wires with a 5mm AVVG10 or more to prevent wire deterioration and damage to the wire coating e To prevent a short circuit never put or leave any metallic objects such as coins or metal tools inside the unit e f the unit starts to emit smoke or strange smells turn off the power immediately and consult your Kenwood dealer e Do not touch the unit during use because the surface of the unit becomes hot and may cause burns if touched ACAUTION To prevent damage to the machine take the following precautions
7. e speaker impedance must be no less than 4 ohms Connecting a speaker with an impedance lower than 4 ohms may damage the unit e 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 eEnsure that the withstand voltage and current ratings of the capacitors C and coils L are sufficient Battery wire Protective Fuse Right speaker E Power wire connection Lead terminal E Speaker bridge connection Subwoofer gt il i uu 6 o O ae Lead terminal Power control wire Ground wire at 4 Battery Terminal cover
8. e Be sure the unit is connected to a 12V DC power supply with a negative ground connection e Do not open the top or bottom covers of the unit e 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 e 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 e To prevent a short circuit when replacing a fuse first disconnect the wiring harness e If you experience problems during installation consult your Kenwood dealer e If the unit does not seem to be working right consult your Kenwood dealer FCC WARNING This equipment may generate or use radio frequency energy Changes or modifications to this equipment may cause harmful interference unless the modifications are expressly approved in the instruction manual The user could lose the authority to operate this equipment if an unauthorized change or modification is made E 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 ACAUTION 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 e uta sit did SevUE E A 0 2V aA aA
9. eat build up occurs and the unit may be damaged e Install this unit in a location which allows heat to easily dissipate Once installed do not place any object on top of the unit e The surface temperature of the amplifier wil become hot during use Install the amplifier in a place where people resins and other substances hat are sensitive to heat will not come into contact with it e This unit has cooling fans to decrease the internal emperature Be careful not to block the cooling fan openings when installing the unit Blocking these openings will inhibit the cooling of the internal emperature and result in malfunction Self tapping screw 94 x 16 mm ry ae Installation board etc eee e thickness 15 mm or more Controls 0 5q40 420 0 3910 w MIN 5 0 2 MAX INPUT SENSITIVITY V OSU 2 iD wa m GND a BURR nro a GF RET Texpnes towne zen omaron B paara eee gJ oJ _ i a KENWOOD BASS BOOST 6 eras Sere One GEE ONT Gen Na F Operations of the following control and switches are required in accordance with the center unit and speakers connected with this unit Fuse 30 Ax 2 Battery terminal Ground terminal Power control terminal
10. g a coil and capacitor in case of 6dB oct slope Coil L Passes low frequencies and blocks high frequencies Low pass Capacitor C Passes high frequencies and blocks low frequencies High pass Example When it is required to set a crossover frequency of 120 Hz using speakers with an impedance of 4 ohms fc Cut of Frequency Hz R Speaker Impedance Q Left speaker i Right speaker Subwoofer Right speaker CENTER UNIT Cassette receiver CD receiver etc NOTE For safe installation read Installation procedure before starting work E RCA cable connection E Speaker level input connection Genuine accessory car stereo No RCA cable Battery line output center unit etc Gray Gray Black Right N Left White Black E Speaker stereo connection Left speaker Lead terminal wire Power contro eeeeeeeeeeeoeeeoeoeoeeeee eeceeeeeeeeeeeeeeeeeeenoeeeeeeeee l Left speaker Frequency 159000 159000 fcxR HF 120Hz x 4Q 533129 HF 159 x R 159 x 4Q ae mH 12007 gt 5 3 mH ACAUTION e f you wish to bridge connect a speaker th
11. mum power output of the genuine accessory car stereo Use the diagram on the right as a guide Connection NOTE For the pre output level or the maximum power output refer to the Specifications in the instruction manual of the center unit RCA cable ground lead terminal When using an RCA cable with a ground lead attached connect the ground lead to this terminal ACAUTION Do not use this terminal for power source grounding This unit will be damaged if the power source grounding wire is connected to this erminal 3 LINE IN terminal Speaker level input terminals Cooling fan TOO w waxmwm rower Power indicator o o 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 E 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 e When a speaker wire may be short circuited e When a speaker output contacts ground e When the unit malfunctions and a DC signal is sent to the speaker output e When the internal temperature is high and unit
12. n 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 e The impedance of the speakers that are going to be connected should be 2Q or greater for stereo connections or 4Q 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 KENWOOD KAC 929 POWER AMPLIFIER INSTRUCTION MANUAL KENWOOD CORPORATION TT CHO1 Take the time to read through this instruction manual Familiarity with installation and operation procedures will help you obtain the best performance from your new power amplifier For your records Record the serial number found on the back of the unit in the spaces designated on the warranty card and in the space provided below Refer to the model and serial numbers whenever you call upon your KENWOOD dealer for information or service on the product Model KAC 929 Serial number PRINTED IN USA B64 1975 00 KM EM E Accessories Installation procedure Number of Items External Part name View 1 Remove the ignition key and disconnect the negative terminal of the battery to prevent short circuits 2 Set the unit according to the intended usage 3 Connect the input and output cables of the units 4
13. s and be e Do not connect cables and leads to both RCA careful not to cause scratches or other damage cable input jacks and the speaker level input Do not install near the dashboard rear tray or air terminals simultaneously for this may cause bag safety parts malfunction or damage The installation to the vehicle should securely fasten e Connect the power control lead to a power he unit to a place in which it will not obstruct supply which can be turned ON OFF by the driving If the unit comes off due to a shock and hits ignition key switch ACC line With this a person or safety part it may cause injury or an connection shock noise may be generated accident when the power of the genuine accessory car stereo is switched ON OFF E Power terminal Connect to their respective terminals the power supply wire and ground wire all of which pass through the associated terminal cover Once the connections are complete place the cover on the terminal section Terminal cover Power terminal Self tapping screws 04 x 16 mm MDD Speaker level input cable 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 ACAUTION e Do not install the unit under the carpet Otherwise h
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