Kenwood KAC-718 Stereo Amplifier User Manual
Contents
1. UP O A eri More than 100 Low Pass Filter Frequency 12 dB oct sauna 30 200 Hz Variable General Operating Voltage occcccoonnccnccocnnnccnonnnncononnnnnononnnnnononnnnnnnnnnncnnnnnnnnonos 14 4 V 11 16 V allowable Current Consumption 1KAZ 10 TAO 22 sense 15 A DIMENSIONS WV XAA Deere ideada 290 x 56 x 170 mm e 3 0 kg 8 English2. 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 attach a protective fuse into the battery wire close to the battery Use a protective fuse having a capacity that is about 10 A higher than the maximum current drawn by the amplifier e Use vehicle type fire resistant power supply wiring wire for the battery wire and the ground wire The current capacity of the power supply wiring wire should be about 10 A higher than that of the protective fuse capacity which means about 20 A higher than the maximum current drawn by the amplifier 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 Power terminal Connect to their respective terminals the power control wire 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 Example One Power Amplifier Is Used 30 A x 1 15 A x 2 _ Cross sectional Area of Wiring 3 mm AWG 12 or Wire AWG greater x 1 30 A English 7 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 p
3. can cause this unit to fail e After installation check that the brake lamps winkers and wipers work properly Installation Installation board etc thickness 15 mm or more 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 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 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
4. KENWOOD KAC 718 MONO POWER AMPLIFIER INSTRUCTION MANUAL KENWOOD CORPORATION Safety precautions AWARNING To prevent injury or fire take the following precautions eWhen extending the ignition battery or ground wires make sure to use automotive grade wires or other wires with a 3mm AWG12 or more to prevent wire deterioration and damage to the wire coating e lo 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 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 VWWhen 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 f you experience problems during installation consult your Kenwood dealer e f the u
5. 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 Controls Operations of the following control and switches are required in accordance with the center unit and speakers connected with this unit POWER IN FUSE 25A ND P CON REMOTE KENWOOD MONO POWER AMPLIFIER RCA cable ground lead terminal 2 LINE IN terminal 3 INPUT SENSITIVITY control Set this control according to the pre output level of the center unit 10 connected with this unit or to the maximum power output of the genuine 0 5 accessory car stereo sf i 0 3 Use the diagram on the right as a guide k NOTE Sy 25 5 v 0 2 For the pre output level or the maximum power output refer to the W Specifications in the instruction manual of the center unit 4 LOW PASS FILTER FREQUENCY control This control adiusts the frequency band output from this unit BASS EMPHASIS switch This switch allows to emphasize the output from this unit 6 Speaker level input terminals Battery terminal Ground terminal 9 Power control REMOTE terminal FUSE 25 A x 1 aD Speaker output terminals 4 English Protection function 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 Pow
6. ce of the speakers and then connect suitable speakers to the amplifier Maximum output of Combined Rated input power and the amplifier impedance impedance of the speakers English 8 Connection E RCA cable connection ACAUTION Left output White CENTER UNIT Do not connect cables and leads lH Cassette receiver to both RCA cable input jacks lt gt ii CD receiver etc and the speaker input terminals Right output Red simultaneously for this may IT RCA cable cause malfunction or damage Commercially a control et available part Commercially available part Left input Right input SPEAKER LEVEL INPUT ORIGHTO OLET O 30 200 LOWPASS FILTER FREQUENCY Hz RCA cable ground terminal ACAUTION When using an RCA cable with Do not use this terminal for power source a ground lead attached connect grounding This unit will be damaged if the the ground lead to this terminal Gower source grounding wire is connected to this terminal gt 0 00000 Left output Genuine accessory car stereo Speaker level input terminals Lead terminal Sy C Commercially available parts Vv SS 90 120 170 amp 30 200 MIN MAX a LOWPASS FILTER FREQUENCY Hz o GND ACAUTION e The genuine accessory car stereo shall have a maximum power output of no more than 25 W e Do not c
7. er indicator goes off and the amplifier stops operating E 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 activates in the following situations eWhen a speaker cable may be short circuited eWhen a speaker output contacts ground e When the unit malfunctions and a DC signal is sent to the speaker output e When the temperature of internal parts exceeds 120 C 248 F e When a ground cable 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 Power indicator Connection HM Speakers cable connection SPEAKER OUTPUT r MONO 4 KENWOOD MONO POWER AMPLIFIER Subwoofer Lead terminal E Speaker Selection Commercially available parts e 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 e Use speakers that have an impedance of 2Q or greater When more than one set of speakers are going to be used calculate the combined impedan
8. nit 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 Accessories Round terminal Terminal cover Power terminal 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 A Connect the speaker cables 5 Connect the power cable power control cable and grounding cable following this order 6 Install the unit in the car 7 Connect the negative terminal of the battery ACAUTION e Be sure to turn the power off before changing the setting of any switch e f the fuse blows check cables 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 cables to appropriate speaker connectors separately Sharing the negative cable of the speaker or grounding speaker cables to the metal body of the car
9. onnect the speaker output leads from a power amplifier Optional to the speaker 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 input terminals simultaneously for this may cause malfunction or damage e 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 6 English e lt ma E Power wire connection SPEAKER LEVEL INPUT LEFT O ORIGHT LOWPASS FILTER FREQUENCY Hz Round terminal Medium 276g Round terminal Small ee p Terminal cover Power control cable Commercially available part Battery cable Ground cable Commercially available part Commercially available part Round terminal Large POTES p E ee To prevent fire caused by a short in the wiring connect a fusible link or breaker nearby the battery s positive terminal Protective Fuse Battery 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 cord 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
10. ossible problems PROBLEM No sound No sound from one side The output level is too POSSIBLE CAUSE e Input or output cables are disconnected e Protection circuit may be activated e The fuse may be blown because the volume was too high SOLUTION e Connect the input or output cables e Check connections by referring to Protection function e Replace the fuse with a new fuse and use a lower volume The input sensitivity adjusting small or too large The sound quality is bad The sound is distorted control is not set to the correct position e The speakers cable are connected with wrong polarity e A speaker cable is pinched by a screw in the car body e The switches may be set improperly Adjust the control correctly referring to Controls e Connect them properly checking the of the terminals and cables well e Connect the speaker cable again so that it is not pinched by anything e Set switches properly by referring to Controls Specifications Specifications subject to change without notice Audio Section Max Power Output A O uses italia 240Wx 1 at 100 Hz Rated Power Output 4 Q nen 120 W x 1 DIN45324 B 14 4V at 100 Hz A E cae III indeed E E E dese 160 W x 1 0 8 THD at 100 Hz MT to Noise Ra Ae PE il Po OO een 100 dB A een ee 0 15 V rated output A O a o AENEHRRNERR 4 0 V rated output a A 10 kQ Delos sd OM A e e
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