Kenwood KAC-648 User Manual
Kenwood KAC-648 Manual
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Kenwood KAC-648 manual content summary:
- Kenwood KAC-648 | User Manual - Page 1
KAC-648 4-CHANNEL POWER AMPLIFIER INSTRUCTION MANUAL B64-1364-00 (EM) - Kenwood KAC-648 | User Manual - Page 2
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 accidents or problems that can occur. When the protection function is triggered, the Power indicator goes off and the amplifier stops - Kenwood KAC-648 | User Manual - Page 3
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 - Kenwood KAC-648 | User Manual - Page 4
that the combined impedance is 4Ω or greater. 2CAUTION The rated input of the speakers should be no less than the maximum output of the amplifier. Otherwise malfunction may result. 7 Speaker level input terminals 8 INPUT SELECTOR switch This switch selects the input method of the signals to be - Kenwood KAC-648 | User Manual - Page 5
guide. 15 1.0 10 1.0 2.0 0.5 0.5 NOTE 3.0 25 MIN 4.0 (V) (W) 0.3 0.3 MAX 0.2 For the pre-output level or the maximum power output, refer to the "Specifications" in the instruction manual of the center unit. $ OPERATION switch The amplification methods of the signals input to amplifiers - Kenwood KAC-648 | User Manual - Page 6
System examples s High-pass + Subwoofer system INPUT SELECTOR AB A FILTER OPERATION OFF HPF LPF STEREO MONO(Lch) CONTROL A CONTROL B FILTER OPERATION OFF (Lch) HPF LPF STEREO MONO 1.0 0.5 0.3 MIN MAX INPUT SENSITIVITY(V) 1.0 0.5 0.3 MIN MAX INPUT SENSITIVITY(V) CENTER UNIT Switch - Kenwood KAC-648 | User Manual - Page 7
greater current-handling capacity than the total maximum current drawn by each amplifier. Example: One Power Amplifier Is Used Model Maximum Current Drawn Protective Fuse Cross-sectional Area of Wiring Cable (AWG) KAC-648 22 A 30 A × 1 [15 A × 2] 3 mm2 (AWG 12) or greater × 1 30 A 15 A 15 - Kenwood KAC-648 | User Manual - Page 8
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 - Kenwood KAC-648 | User Manual - Page 9
Examples: Model KAC-648 Stereo Connections (4Ω) 50 W or greater Bridged Connections (4Ω) 140 W or greater 50W (4Ω) 50W (4Ω) 4 Ω Maximum output of the amplifier Combined impedance 50W (4Ω) 50W (2Ω) 50W (2Ω) 4 Ω 50W (4Ω) Rated input power and impedance of the speakers 25W (8Ω) 4 Ω 25W - Kenwood KAC-648 | User Manual - Page 10
genuine-accessory car stereo shall have a maximum power output of no more than 25 W. • Do not connect the speaker output leads from a power amplifier (Optional) to the speaker input terminals of this unit, for this may cause malfunction or damage. • Connect the power control lead to a power supply - Kenwood KAC-648 | User Manual - Page 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. (No sound from one side.) • Input (or - Kenwood KAC-648 | User Manual - Page 12
Specifications Specifications subject to change without notice. Audio Section Max Power Output (4 Ω) 4 Channel Mode...50 W × 4 3 Channel Mode 50 W × 2 + 140 W × 1 2 Channel Mode...140 W × 2 Rated Power Output (4 Ω) 4 Channel Mode 25 W × 4 (DIN45324, +B=14.4 V) 3 Channel Mode 25 W × 2 (1 kHz, 0.08
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KAC-648
4-CHANNEL POWER AMPLIFIER
INSTRUCTION MANUAL
B64-1364-00 (EM)