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KAC-PS401M
MONO POWER AMPLIFIER
INSTRUCTION MANUAL
© B64-1441-00 (EM)
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Safety precautions • To prevent a short circuit when replacing a 2WARNING fuse, first disconnect the wiring harness. To prevent injury or fire, take the following NOTE precautions: • When extending the ignition, battery, or • If you experience problems during ground cables, make sure to use automotive- installation, consult your Kenwood dealer. 2 grade cables or other cables with a 5mm • If the unit does not seem to be working right, (AWG10) or more to prevent cable consult your Kenwood dealer.
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Installation procedure • Connect the speaker cables to appropriate • After installation, check that the brake speaker connectors separately. Sharing the lamps, winkers, and wipers work properly. negative cable of the speaker or grounding speaker cables to the metal body of the car can cause this unit to fail. Installation Self-tapping screw Air inlet Cooling fan
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Controls ! 2 3 1 FUSE(15A· 4 ) SPEAKER OUTPUT SERVO II ∑ 4 FEED BACK BATT. GND – + – + 0.5 0.5 5 0.2 INPUT SENSITIVITY (MIN) (MAX) 1 2 3 4 5 50 200 40 200 LO PASS B.R.F. FREQUENCY FREQUENCY LINE IN OUT # % L L INFRASONIC BAND GND P.CON EXT.AMP.CONT. REJECT LPF FREQ (Hz) R INFRASONIC BAND REJECT LPF B.M.S. R FREQ (Hz) 15 30 20 25 OFF ON OFF ON OFF ON 15 30 OPEN/ B.M.S. 20 25 OFF ON OFF ON OFF ON CLOSE B.M.S. (+6) (REMOTE) &$^@ 67 8 90 1 Fuse (15 A · 4) @ Low Pass Filter switch When this swi
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* ( COOLING FAN COOLING FAN COOLING FAN AIR AIR INDUCTION INDUCTION ) OPERATION/PROTECTION OPERATION/PROTECTION OPERATION/PROTECTION POWER POWER MONO POWER AMPLIFIER e ce lon X OPEN/CLOSE OPEN/CLOSE FREQUENCY B.M.S. FREQUENCY B.M.S. 2 2 3 3 1 1 4 4 LOW VOLTAGE LOW VOLTAGE 0.5 0.5 INPUT 5 0.2 50 100 INPUT 5 0.2 50 100 SENSITIVITY (MIN) (MAX) SENSITIVITY (MIN) (MAX) OPEN/CLOSE B.M.S. B.M.S. 50 200 40 200 50 200 40 200 LO PASS B.R.F. LO PASS B.R.F. FREQUENCY FREQUENCY FREQUENCY FREQUENCY @1 LOW V
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B.M.S. (Bass Management System) B.M.S. 1 OPEN/ B.M.S. CLOSE B.M.S. (+6) (REMOTE) B.M.S. FREQUENCY 2 COOLING FAN AIR INDUCTION OPERATION/PROTECTION 50 100 POWER MONO POWER AMPLIFIER OPEN/CLOSE B.M.S. 2 FREQUENCY 3 1 4 LOW VOLTAGE 0.5 OPERATION/PROTECTION INPUT 5 0.2 50 100 SENSITIVITY (MIN) (MAX) B.M.S. 50 200 40 200 3 LO PASS B.R.F. FREQUENCY FREQUENCY OPEN/CLOSE LOW VOLTAGE B.M.S. indicator B.M.S. n If the unit is not going to be operated from the outside: 1 B.M.S. switch NOTE This boosts the
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n If the unit is going to be operated from the centre unit: The amount of bass boost and the opening/closing of the slide panel can be controlled from the centre unit. Additionally, up to 3 power amplifiers can be set at the same time. NOTE Kenwood centre units released in 1999 or later having an “EXT.AMP.CONT.” cable operate this unit. Instructions on how to operate the centre unit will be found in the instruction manual supplied with the centre unit. 1 B.M.S. switch 2 B.M.S. FREQUENCY contro
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Connection n RCA cable connection Left input LINE IN OUT L L GND P.CON EXT.AMP.CONT. Right input R INFRASONIC BAND REJECT LPF B.M.S. FREQ (Hz) R 15 30 OPEN/ B.M.S. 20 25 OFF ON OFF ON OFF ON CLOSE B.M.S. (+6) (REMOTE) CENTRE UNIT (Cassette receiver, CD receiver, etc.) RCA cable * RCA cable ground terminal * : Commercially available parts RCA cable ground terminal When using an RCA cable with a ground lead attached, connect the ground lead to this terminal. 2CAUTION Do not use this terminal for
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n 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. • Use speakers that have an impedance of 2Ω or greater. When more than one set of speakers are going to be used, calculate the combined impedance of the speakers and then connect suitabl
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Connection n Power cable connection 2WARNING To prevent fire caused by a short in the wiring, connect a fusible link or breaker nearby the battery’s positive terminal. Wiring • 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 cable. • Do not allow the cable to directly contact the edge of the iron plate by using Grommets. • Connect the ground cable to a metal part of the car chassis that acts as an electrical
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Sigma servo feed back The sound reproduced through conventional amplifiers is distorted due to the counterelectromotive force produced in the oscillating system of the speaker. The counterelectromotive force is particularly high with the woofer which requires a large drive mass.The sigma servo connection reduces distortion caused by the counterelectromotive force by including the circuit up to the speaker terminals in the negative feedback loop. This makes it possible to drive speakers with mor
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Connection The acoustic properties of vehicle compartment tend to 0 dB cause oscillation due to resonance or unclearness of sound due to standing waves at certain frequencies. The band reject filter can solve the problems of resonance or unclear sound with minimum influence on the sound quality because it eliminates only the frequencies causing resonance or standing waves. Frequency n Adjustment method: The band reject filter cuts only the limited frequencies to minimize influence on the sound
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Troubleshooting Guide PROBLEM POSSIBLE CAUSE SOLUTION If the slide panel moves of • The system is in DEMO mode. • Cancel DEMO mode by pressing its own accord. the OPEN/CLOSE button. • The slide panel has gone into • Check the B.M.S. and operate remote operation mode. the slide panel remotely or manually. The external amplifier • The B.M.S. switch is set to • The B.M.S. switch is set to controller (B.M.S.) will not "B.M.S. (+6)". "(REMOTE)". work. • The external amplifier control • Check that the
