Kenwood KAC-9152D Car Stereo System User Manual
Contents
1. the of the terminals and polarity wires well e A speaker wire is pinched by a e Connect the speaker wire again screw in the car body so that it is not pinched by anything e The switches may be set e Set switches properly by improperly referring to System examples Specifications Specifications subject to change without notice Audio Section Max Power Output ee EE neal ae eh ae a eee 320 W x2 Rated Power Output Normal 4 Q 20 Hz 20 kHz OO80eTH D t 60 W x 4 2 Q 1 kHz 0 8 THD Bridged 4 Q 1 kHz 0 8 THD Frequency Response 0 3 dB Sensitivity rated output MAX ALN ge eege 5 0 V Signal to Noise RATIO EE Input Impedance Low Pass Filter Frequency 12 dB oct 50 200 Hz variable High Pass Filter Frequency 12 dB oct 50 200 Hz variable Bass Boost Circuit 90 Hz sise OFF 6 dB General Operating Voltage eceeccecceccseceeeceeseeseeeeeeeeneeeeseeceseecaeeeseeesieeeneeesseeeses 14 4 V 11 16 V allowable Current Consumption 4 Q 10 TAD 5 sviscssececasan ceisecastaeciucs ian damier eee Eeer 39 A Dimensions W x H x D 11 1 4 x 2 1 4 x 10 9 16 inch SO E EE I N 2 96 kg 6 5 Ibs 12 English2. Controls Indicator CINPUT SENSITIVITY J TER FREQUENCY B Ga This is a 4 channel amplifier including 2 stereo amplifiers in a body One amplifier is referred to as amplifier A and the other is amplifier B This unit is compatible with a large variety of systems by combining the switches and functions described in the following INPUT SENSITIVITY control Set this control according to the pre output level of the center unit connected with this unit or to the maximum power output of he genuine accessory car stereo The sensitivities of amplifiers A and B can be adjusted independently regardless of the position of the input selector switch Use the diagram on the right as a guide NOTE For the pre output level or the maximum power output refer to the Specifications in the instruction manual of the center unit Bch BASS BOOST switch Setting this switch to ON emphasizes the bass You can use the BASS BOOST for amplifier B only e ON position BASS BOOST is 6 dB e OFF position BASS BOOST is OFF 4 English FILTER switch This switch allows to apply high pass or low pass filtering to the speaker outputs e HPF High Pass Filter position The filter outputs the band of higher frequencies than the frequency set with the FILTER FREQUENCY control e OFF position The entire bandwidth is output
3. without filtering e LPF Low Pass Filter position The filter outputs the band of lower frequencies than the frequency set with the FILTER FREQUENCY control OPERATION switch The amplification methods of the signals input to amplifiers A and B can be selected independently according to the setting of this switch 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 INPUT SELECTOR switch This switch selects the input method of the signals to be amplified by amplifiers A and B e AB position Amplifies both of the signals input to amplifiers A and B e A position Amplifies only signal input amplifier A with both amplifiers A and B FILTER FREQUENCY control When the FILTER switch is set to the HPF High Pass Filter or LPF Low Pass Filter position the threshold frequency can be adjusted with this control 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 a
4. CHFILTER Bch FILTER 2 FILTER FREQUENCY HZ CENTER UNIT D lt a 0 8 50 ED INPUT B sier _ Cm m STEREO MONOILeh STEREO MONO Lch Oe Ach OPERATION Bch OPERATION E 2 channel system CENTER UNIT INPUT setector eg C a IDN STEREO MONO Leh STEREO MONO LcH ESE Ach OPERATION Bch OPERATION oF Co Bch BASS BOOST FILTER FREQUENCY TH cm ES LPF pars E 450 10 English E Tri mode Subwoofer CENTER UNIT L R Bridged SE Subwoofer mm Ke Im L R Bridged STEREO MONO Leh STEREO MONO Lch QD Ach OPERATION Bch OPERATION mes Ces F Principle of Tri mode Method of frequency band division using a coil and capacitor in case of 6dB oct slope c F Coil L Passes low frequencies and blocks high E EEN frequencies Low pass Capacitor C Passes high frequencies and blocks low frequencies High pass c 189000 A z fexR fc Cut of Frequency Hz requenc q y L R mH R Speaker Impedance Q 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 The capacitor rating should be as close as possible to 331 25 uF and the coil rating should be as close as possi
5. KENWOOD KAC 8401 4 CHANNEL POWER AMPLIFIER INSTRUCTION MANUAL KENWOOD CORPORATION B64 2575 00 00 MV 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 5 mm AWG 10 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 lf 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 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 NOTE e f you experience problems during installat
6. ail e After installation check that the brake lamps winkers and wipers work properly E Wiring e Take the battery wire for this unit directly from the battery If it s connected to the vehicle s wiring harness it can cause blown fuses etc 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 Be sure to install a protective fuse in the power cord near the battery The protective fuse should be the same capacity as the unit s fuse capacity or somewhat larger e For the power cord and ground use a vehicle type fireproof power wring cord with a current capacity greater than the unit s fuse capacity Use a power wiring cord with a diameter of 5 mm AWG 10 or greater 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 E Speaker Selection e The rated input power of the speakers that are going to be connected should be greater than the maximum output power in W
7. atts 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 Combined impedance English 7 Connection E RCA cable or Speaker level input connection RCA cable Connections RCA cable ground terminal RCA cable i CENTER UNIT KO CD receiver etc B channel A channel e Sinou eis Leftinput Left input Power control wire y Blue White A channel B channel Right input Right input Speaker level input Connections Cable Color of the connector A channel White Left White Black Gra Genuine accessory car GE G a k stereo No line output Gray Blac center unit etc B channel Green Left Green Black B channel Purple G Right Purple Black Battery ACC 8 English Commercially available parts E Speaker wire connection Stereo Connections Lead ter
8. ble to 5 3 mH ACAUTION e f 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 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 e Ensure that the withstand voltage and current ratings of the capacitors C and coils L are sufficient English 11 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 cables e Protection circuit may be e Check connections by referring activated to Indicator Blown fuse e Volume is too high e Replace the fuse and use lower volume e The speaker cord is shorted e After check the speaker cord and fixing the cause of the short replace the fuse The output level is too The input sensitivity adjusting Adjust the control correctly small or too large control is not set to the correct referring to Controls position The sound quality is bad e The speakers wire are e Connect them properly checking The sound is distorted connected with wrong
9. erated when the power of the genuine accessory car stereo is switched ON OFF E Installation procedure 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 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 wires of the units 4 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 f sound is not output normally immediately turn power off and check connections e Be sure to turn the power off before changing the setting of any switch e f the fuse blows check wires for shorts then replace the fuse with one of the same rating e 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 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 f
10. ht In a location that gets hit by hot air e Do not install the unit under the carpet Otherwise heat 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 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 e 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 e 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 e Do not install near the dashboard rear tray or air bag safety parts e 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 e 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
11. ion consult your Kenwood dealer e f the unit does not seem to be working right consult your Kenwood dealer 2 English 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 To prevent battery rise When the unit is used in the ACC ON position without turning the engine ON it depletes the battery Use it after starting the engine Protection function There is a Protection function installed in the unit to protect the unit and speakers from various problems When Protection operates the indicator informs you of the condition Refer to page 5 Accessories Number of Items Part name External View Self tapping screws 54 x 16 mm mD Terminal cover Power terminal Speaker level input cable Installation Self tapping screw Cooling fan SEN 16 my RK re LOS E FALA TB Installation board etc thickness 15 mm or more ACAUTION e 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 sunlig
12. minal es EE wl pe eu A channel Left speaker A channel Right speaker Bridged Connections EE EE B channel Right speaker B channel Left speaker A channel Speaker Bridged E Power wire connection B channel Speaker Bridged Extension wire Battery wire D Protective Fuse Ground wire A Battery le Lead terminal English 9 System examples E 4 channel system Front Left speaker 1 CENTER UNIT Front Right speaker Rear Left speaker Rear Right speaker INPUT setector ID ID STEREO MONO Lch STEREO MONO Lch Rp Ach OPERATION Bch OPERATION BchBASS BOOST Ae FILTER Bch FILTER 2 Cragg Gen w 6 CENTER UNIT INPUT SELECTOR ID ID CCE STEREO MONO Leh STEREO MONOILCh RE Ach OPERATION Bch OPERATION E 3 channel system Left speaker High pass 1 Right speaker High pass Subwoofer L R Bridged CENTER UNIT INPUT SELECTOR ID IDN L m STEREO MONG Lch STEREO MONO Len Ee Ach OPERATION Bch OPERATION a D e en Ee Ek Beh BASS BOOST A
13. mplifier bridged connections are used Make connections to the LEFT channel and the RIGHT channel SPEAKER OUTPUT terminals The speakers to be connected should have an impedance of 4Q or greater When multiple speakers are to be connected ensure that the combined impedance is 4Q or greater ACAUTION The rated input of the speakers should be no less than the maximum output of the 6 English amplifier Otherwise malfunction may result RCA cable ground lead terminal When using an RCA cable with a ground lead attached connect the ground lead to this terminal LINE IN terminal LINE OUT terminal These jacks output respectively the signals input to amplifiers A and B They always output the stereo signals regardless of the position of the OPERATION switch Speaker level input terminals NOTE e The genuine accessory car stereo shall have a maximum power output of no more than 40 W Do not connect the speaker output leads rom a power amplifier Optional to the speaker level input terminals of this unit or this may cause malfunction or damage e Do not connect cables and leads to both RCA cable input jacks and the speaker level input terminals simultaneously for his may cause mal e Connect the power unction or damage control lead to a power supply which can be turned ON OFF by the igni ion key switch ACC line With this connection shock noise may be gen
14. nd 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 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 English 5 Connection Terminal names Fuse 40 A If you can t find the specified capacity fuse at your store etc consult your Kenwood dealer Battery terminal Ground terminal 4 Power control terminal Controls the unit ON OFF Controls the unit power Be sure to connect it with all the systems Speaker output terminals e Stereo Connections When you wish to use the unit as a stereo amplifier stereo connections are used The speakers to be connected should have an impedance of 2Q or greater When multiple speakers are to be connected ensure that the combined impedance is 2Q or greater for each channel Bridged Connections When you wish to use the unit as a high output monaural a
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