View KAC-7201_2767417.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

kac-7251 KAC-7201 ?printed in china b64-2569-00/00 (kv/ev) power amplifier 7 page 2-13 instruction manual amplificateur de puissance 7 page 14-25 mode d?mploi amplificador de potencia 7 p?gina 26-37 manual de instrucciones 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-7251/7201 serial number kac-7251/7201(ke) 1english 02.11.14 10:30 am page 1
2 english safety precautions to prevent injury or fire, take the following precautions: ? hen extending the ignition, battery, or ground wires, make sure to use automotive- grade wires or other wires with a 5 mm 2 (awg 10) or more to prevent wire deterioration and damage to the wire coating. to prevent a short circuit, never put or leave any metallic objects (such as coins or metal tools) inside the unit. if the unit starts to emit smoke or strange smells, turn off the power immediately and consult your kenwood dealer. do not touch the unit during use because the surface of the unit becomes hot and may cause burns if touched. to prevent damage to the machine, take the following precautions: be sure the unit is connected to a 12v dc power supply with a negative ground connection. 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. if you experience problems during installation, consult your kenwood dealer. 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. 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. 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 2 caution note 2 caution 2 warning part name number of items external view self-tapping screws (? 16 mm) 4 terminal cover (power terminal) 1 speaker level input cable 1 part name number of items external view remote cable 1 remote controler 1 knob 1 dressing plate 1 o f f + 6 db + 12 +9 nut 1 washer 1 self-tapping screws (? 12 mm) 2 double-side tape 1 (kac-7251 only) kac-7251/7201(ke) 1english 02.11.14 10:30 am page 2
english 3 installation 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. otherwise heat build-up occurs and the unit may be damaged. install this unit in a location which allows heat to easily dissipate. once installed, do not place any object on top of the unit. 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. 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. 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. do not install near the dashboard, rear tray, or air bag safety parts. 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. after installing the unit, check to make sure that electrical equipment such as the brake lamps, turn signal lamps and windshield wipers operate normally. 2 caution installation board, etc. (thickness : 15 mm or more) self-tapping screw (? 16 mm) cooling fan remote cable off +6 db +12 +9 remote controler dressing plate nut knob self-tapping screw (? 12 mm) remote controler (kac-7251 only) double-side tape washer mount the dressing plate according to the mount angle of the remote controller. fully rotate the knob counterclockwise (ccw), and adjust the marking of the knob to the "off" position of the dressing plate. note off +6 db +12 +9 kac-7251/7201(ke) 1english 02.11.14 10:30 am page 3
4 english controls / indicator 12 3 45 (w) 20 40 10 1 lpf frequency control sets the cutoff frequency when the filter switch is set to lpf. 2 filter switch this switch allows to apply high-pass or low-pass filtering to the speaker outputs. hpf (high-pass filter) position: only frequencies of 150 hz or higher are output. (frequencies below 150 hz are cut.) 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 lpf frequency control. the speaker output is automatically switched to monaural (l+r). 3 bass boost switch sets the boost level for bass control. 12db position: bass boost is +12 db. KAC-7201: off position: bass boost is off. kac-7251: off(remote) position: can be set from the remote controller. if you have disconnected the remote controller, the bass boost is turned off. 4 operation switch this switch is used to select the operation mode of the amplifier. stereo position: the amplifier can be used as a stereo amplifier. ? ono (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.) 5 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. use the diagram on the right as a guide. for the pre-output level or the maximum power output, refer to the ?pecifications in the instruction manual of the center unit. 6 remote controler control (kac- 7251 only) when the "bass boost" switch is in the "off (remote)" position, control the bass boost level from the remote controller. off position: bass boost is off. +6/+9/+12 position: boost the bass sound by +6 db, +9 db and +12 db, respectively. note note kac-7251/7201(ke) 1english 02.11.14 10:30 am page 4
english 5 7 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 a speaker wire may be short- circuited. when a speaker output contacts ground. when the unit malfunctions and a dc signal is sent to the speaker output. ? hen the internal temperature is high and unit won? operate. 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. off +6 db +12 +9 7 6 remote controler (kac-7251 only) kac-7251/7201(ke) 1english 02.11.14 10:30 am page 5
6 english connection 30 30 890! @ ^ & $% # 8 fuse (30 a 2) 9 battery terminal 0 ground terminal ! power control terminal controls the unit on/off. controls the unit power. be sure to connect it with all the systems. @ speaker output terminals 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 2 ? or greater. when multiple speakers are to be connected, ensure that the combined impedance is 2 ? or greater for each channel. 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 9 and the right channel speaker output terminals.) the speakers to be connected should have an impedance of 4 ? or greater. when multiple speakers are to be connected, ensure that the combined impedance is 4 ? or greater. the rated input of the speakers should be no less than the maximum output of the 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 the signal that? input from the line input terminal is output. ^ remote terminal (kac-7251 only) connects the remote cable. use the remote cable of the accessory. & 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. ? onnect 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. note note 2 caution note terminal names kac-7251/7201(ke) 1english 02.11.14 10:30 am page 6
english 7 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. to prevent fire caused by a short in the wiring, connect a fusible link or breaker nearby the battery? positive terminal. 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. wiring take the battery wire for this unit directly from the battery. if it's connected to the vehicle? wiring harness, it can cause blown fuses etc. if 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. do not allow the wire to directly contact the edge of the iron plate by using grommets. connect the ground wire to a metal part of the car chassis that acts as an electrical ground passing electricity to the battery? negative - terminal. do not turn the power on if the ground wire is not connected. 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? fuse capacity or somewhat larger. for the power cord and ground, use a vehicle type (fireproof) power wring cord with a current capacity greater than the unit? fuse capacity. (use a power wiring cord with a diameter of 5 mm 2 (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. 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. 2 caution 2 warning 2 ? 8 ? 4 ? 4 ? 4 ? 4 ? combined impedance kac-7251/7201(ke) 1english 02.11.14 10:30 am page 7
$ & # gnd # ^ center unit (cd receiver, etc.) left input right input rca cable ground terminal 8 english rca cable* connection power control wire (blue/ white) rca cable or speaker level input connection genuine-accessory car stereo (no line output center unit etc.) acc battery car fuse box white white/black gray gray/black left right cable color of the connector (rca cable connections) (speaker level input connections) remote cable connection (kac-7251 only) remote cable remote controler kac-7251/7201(ke) 1english 02.11.14 10:30 am page 8
30 30 30 30 @ @ @ english 9 speaker wire connection lead terminal* (stereo connections) left speaker right speaker (bridged connections) speaker (bridged) 30 30 90! battery ground wire* battery wire* protective fuse* lead terminal* power wire connection * commercially available parts extension wire* terminal cover kac-7251/7201(ke) 1english 02.11.14 10:30 am page 9
10 english system examples l r l r l r l r l r l r l r l r l r l r l r line out ? ? ? ? ? ? ? ? 23 4 23 4 23 4 23 4 center unit 2-channel system high-power 2-channel system right speaker left speaker right speaker (bridged) left speaker (bridged) 2-channel + subwoofer system subwoofer (l + r) (bridged) center unit center unit right speaker (high pass) left speaker (high pass) kac-7251/7201(ke) 1english 02.11.14 10:30 am page 10
english 11 l r l r l c c 23 4 tri-mode center unit (high pass) subwoofer (l + r) (bridged) principle of tri-mode method of frequency band division using a coil and capacitor?n case of 6db/oct. slope l c 0 db -3 db coil (l): passes low frequencies and blocks high frequencies. (low pass) capacitor (c): passes high frequencies and blocks low frequencies. (high pass) crossover frequency frequency 159000 c= (?) fc x r 159 x r l= (mh) fc fc=cut of frequency (hz) r=speaker impedance ( ? ) 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 (?) and the coil rating should be as close as possible to 5.3 (mh). 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. ensure that the withstand voltage and current ratings of the capacitors (c) and coils (l) are sufficient. 2 caution kac-7251/7201(ke) 1english 02.11.14 10:30 am page 11
12 english tr oubleshooting 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. (no sound from one side.) (blown fuse.) the output level is too small (or too large). the sound quality is bad. (the sound is distorted.) the remote controller does not function. input (or output) cables are disconnected. protection circuit may be activated. volume is too high. the speaker cord is shorted. the input sensitivity adjusting control is not set to the correct position. the speakers wire are connected with wrong + / - polarity. ? speaker wire is pinched by a screw in the car body. the switches may be set improperly. the "bass boost" switch is in the incorrect position. the remote cable is disconnected. connect the input (or output) cables. check connections by referring to "indicator". replace the fuse and use lower volume. after check the speaker cord and fixing the cause of the short, replace the fuse. adjust the control correctly referring to ?ontrols? connect them properly checking the + / - of the terminals and wires well. connect the speaker wire again so that it is not pinched by anything. set switches properly by referring to "system examples". set the "bass boost" switch to the "off (remote)" position. connect the remote cable securely and correctly. kac-7251/7201(ke) 1english 02.11.14 10:30 am page 12
english 13 specifications specifications subject to change without notice. audio section max power output ............................................................................................................80 0 w 1 rated power output normal (4 ? ) (20 hz ?20 khz, 0.08 % thd) ....................................................................150 w 2 normal (4 ? ) (din : 45324 , +b = 14.4v) ........................................................................150 w 2 normal (2 ? ) (1 khz, 0.8 % thd) ....................................................................................230 w 2 bridged (4 ? ) (1 khz, 0.8 % thd) ....................................................................................460 w 1 frequency response (+0, ? db) ..................................................................................5 hz ?50 khz sensitivity (rated output) (max.) ............................................................................................. ...0.2 v sensitivity (rated output) (min.) ................................................................................................5.0 v signal to noise ratio.......................................................................................................... ......100 db input impedance................................................................................................................ ........10 k ? low pass filter frequency (18 db/oct.) ............................................................50 ?200 hz (variable) high pass filter frequency (12 db/oct.) ..................................................................................150 hz bass boost circuit (90 hz) kac-7251 ............................................................off / +6 / +9 / +12 db bass boost circuit (90 hz) KAC-7201 ............................................................................off / +12 db general operating voltage ..................................................................................14.4 v (11 ?16 v allowable) current consumption (4 ? , 10 % thd) ......................................................................................43 a dimensions (w h d) ......................................................................................285 57 305 mm .................................................................................................................... 11-1/4 2-1/4 12 inch weight ......................................................................................................................3.3 2 kg (7.3 lbs) kac-7251/7201(ke) 1english 02.11.14 10:30 am page 13

▲Up To Search▲

Price & Availability of KAC-7201

	To Download KAC-7201 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .