Kenwood KAC-6401 Car Stereo System User Manual
Contents
1. 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 fe Cut of Frequency Hz R Speaker Impedance Q e Be sure to connect capacitors to speakers to e 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 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 e Power control wire 7 Battery Coc cccccccecceccccccccececccccccoccooces Car fuse box e e s E Speaker bridge connection A 65666660 T AT E E A a E E A A ceseeee A A Gs gt A Bridge e e Om o Or O Lead terminal s Y 2 7 Os oP E PS A SNAG 3 ayo snd Gree kero L NA SY A lo e Se Pe KENWOOD J Prerrrrrrerrrrer err i2. 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 e If you experience problems during installation consult your Kenwood dealer e f 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 DIN45324 B 14 4V 3 Channe
3. Output 4 Q 4 Channel Mode 20 Hz 20 kHz less than 0 08 THD 0 cccccccccecceceeeseeeeeesecensseteceseeenees Rated Power Output 2 Q 4 Channel Mode 1 kHz 0 8 THD oiccen Frequency Response 0 3 dB Signal to Noise Ratio 00 Sensitivity MAX rated output MIN rated output Input Impedance cceeeeeeeeee Low Pass Filter Frequency 12 dB oct ceee High Pass Filter Frequency 12 dB oct 0 eeee General Operating Voltage 11 16 V allowable 2 Current Consumption 1 kHz 10 THD Dimensions W x H x D ccccceccsecccececeesssteeeeesesssaees WIQNK ccccccceececeeeeeeeeeeeceeeeeeaeeeseeeeeeeneeeeeaeeeseneeeeteas 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 3mm AVVG12 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
4. A HPF LPF HPF LPF Yom gt m E 2 channel CENTER ACH OPERATION B CH OPERATION INPUT SELECTOR STEREO MONO Lch STEREO MONO Lch aB A wo a o E 2ch woofer CENTER a T UNIT OFF ecooe HPF LPF ACH OPERATION B CH OPERATION INPUT SELECTOR STEREO MONO Lch STEREO MONO Lch aB A E 2 channel ACH OPERATION B CH OPERATION INPUT SELECTOR STEREO MONO Lch STEREO MONO Lch AB A HPF LPF E 3 channel ox E 2 channel A CH FILTER B CH FILTER HPF LPF Al gy aaa Left speaker Right speaker Subwoofer A CH FILTER B CH FILTER OFF HPF LPF umo 2 mm E Speaker stereo connection Left speaker Right speaker n A m E Tri mode Subwoofer L R Frequency A CH OPERATION B CH OPERATION 1 59000 1 59000 STEREO MONO Let STEREO MONO Lch C CXR uF 120Hz x 4Q 331 25 UF 159xR 159 x 40 L fe mH 12047 5 3 mH Principle of Tri mode ACAUTION Method of frequency band division using a coil and capacitor in case of 6dB oct slope Coil L Passes low frequencies and blocks high frequencies
5. BRIDGED ej Jo wA ej loj Eg li e BJ Bridge Description of markings in the figure WIV U L LAJ A cchannel ee MK A A ch Left kenwooo Ws CANIN Ach Righ O B __B channel eee Lead terminal BGM Bchleft BJES B ch Righ ee Terminal cover F Front Crm ms R Rear i Commercially available Power control wire parts Battery wire Ground wire it Protective Fuse Battery
6. 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 No sound No sound from one side disconnected e Protection circuit may be POSSIBLE CAUSE e Input or output cables are SOLUTION e Connect the input or output cables e Check connections by referring activated to Power 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 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 The input sensitivity adjusting control is not set to the correct referring to Controls e The speakers wire are connected with wrong the of the terminals and fixing the cause of the short replace the fuse Adjust the control correctly e Connect them properly checking 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 Specifications subject to change without notice Audio Section Max Power Output c cccceceeeceeseeeeseeeeeeeeeeeneeeees Rated Power
7. dged connections are used Make connections to the LEFT channel and the RIGHT channel SPEAKER OUTPUT terminals 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 the 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 Ach OPERATION Ach FILTER STEREQ YONOILCN yof pr ee B ch FILTER B ch OPERATION INPUT SELECTOR aon o OFF uP Ler STEREO MONO Lch QO 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 Amplifier A B LINE IN terminals 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 OPERATION switch The amplification methods of the signals input to amplifiers A and B can be sel
8. ected 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 MIN 5 0 2 MAX INPUT SENSITIVITY V FILTER switch These switches allow filtering of the speaker output signals e HPF High Pass Filter position Only frequencies of 150 Hz or higher are output Frequencies below 150 Hz are cut e LPF Low Pass Filter position Only frequencies of 80 Hz or lower are output Frequencies above 80 Hz are cut The Lch and Rch will be mixed before output even if the operation switch is set to STEREO e OFF position The original sound without filtering is output 3 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 Power indicator KENWOOD 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 functi
9. he 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 f 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 a power amplifier Optional to the speaker level input terminals of this unit for 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 this may cause malfunction or damage e Connect the
10. l Mode 20 Hz 20 kHz 0 08 THD 1 kHz 0 8 THD 2 Channel Mode 1 kHz 0 8 THD Pe saad chic oar E A E AE A 80 Hz AE A E E E E EE E A A 150 Hz 10 9 16 x 2 5 16 x 8 11 16 in PEE NTN ety 2 9 kg 6 4 Ibs 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 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 3 mm AWG 12 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
11. 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 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 6401 4 CHANNEL 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 6401 B64 2564 00 00 KV EV Installation procedure 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 Connect t
12. on 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 hig 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 h and unit System examples Connection NOTE For safe installation read Installation procedure before starting work E 4 channel E 4 channel P 9 E RCA cable connection E Speaker level input connection Front left speaker Genuine accessory CENTER cocces Front right speaker CENTER UNIT Cassette receiver Cable Color of the car stereo No line Rear left speaker CD receiver etc e connector output center unit Rear righ k 7 gt etc Alors Bon orenanon NPU SEECTOR a ia a SS FCA cable mS Wee AGH FILTER BCH FILTER Iq
13. 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 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 Serial number E Accessories Number of Items Part name External View Terminal cover Power terminal Self tapping screws 94 x 16 mm Speaker level input cable Installation Since the power amplifier has no parts which require operation it can be installed at a position away from he 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 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 When making a hole under a seat inside the trunk or some
14. where 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 Self tapping screw thickness 15 mm or more Controls ar 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 Fuse 25 A Battery terminal Ground terminal Power control terminal Amplifier A B 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 bri
Download Pdf Manuals
Related Search