Instruction/ maintenance manual of the product KAC-648 Kenwood
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KA C-648 4-CHANNEL POWER AMPLIFIER INSTR UCTION MANU AL B64-1364-00 (EM).
2 Saf ety pr ecautions Pr ot ection 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 Power indicator goes off and the amplifier stops operating.
3 Installation pr ocedur e 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 the speaker cables.
1 Fuse (25 A × 1) 2 Battery terminal 3 Ground terminal 4 Power control (REMOTE) terminal 5 Amplifier A speaker output terminals 6 Amplifier B speaker output terminals ❖ SPEAKER OUTPUT terminals • Stereo Connections: When you wish to use the unit as a stereo amplifier, stereo connections are used.
! 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.
L R L R L R LINE OUT A B BRIDGED BRIDGED INPUT SENSITIVITY(V) CONTROL OPERATION B CONTROL A (Lch) MONO MAX MIN 0.3 0.5 1.0 STEREO INPUT SENSITIVITY(V) MAX MIN 0.
7 Connection A B A B SPEAKER LEVEL INPUT R L LEFT RIGHT SPEAKER LEVEL INPUT LEFT BRIDGED RIGHT A B SPEAKER OUTPUT POWER IN FUSE(25A) BATT P.CON(REMOTE) GND 25 ■ Power cable connection To prevent fire caused by a short in the wiring, connect a fusible link or breaker nearby the battery’s positive terminal.
8 A B A B SPEAKER LEVEL INPUT R L LEFT RIGHT SPEAKER LEVEL INPUT LEFT BRIDGED RIGHT A B SPEAKER OUTPUT POWER IN FUSE(25A) BATT P.CON(REMOTE) GND 25 L E F T BRIDGED R IG H T A B BRIDGED R L A B A B SPEAKER LEVEL INPUT R L LEFT RIGHT SPEAKER LEVEL INPUT LEFT BRIDGED RIGHT A B SPEAKER OUTPUT POWER IN FUSE(25A) BATT P.
9 LINE OUT INPUT SENSITIVITY(V) CONTROL OPERATION 4 CHANNEL POWER AMPLIFIER L R B LPF OFF FILTER HPF B A (Lch) MONO MAX MIN 0.3 0.5 1.0 STEREO + INPUT SENSITIVITY(V) MAX MIN 0.
10 A B A B SPEAKER LEVEL INPUT R L LEFT RIGHT SPEAKER LEVEL INPUT LEFT BRIDGED RIGHT A B SPEAKER OUTPUT POWER IN FUSE(25A) BATT P.CON(REMOTE) GND 25 LE F T R IG H T SPEAKER LEVEL INPUT • The genuine-accessory car stereo shall have a maximum power output of no more than 25 W.
11 T r 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.
12 Specifications Specifications subject to change without notice. Audio Section Max Power Output (4 Ω ) 4 Channel Mode ................................................................................................................. 50 W × 4 3 Channel Mode .
An important point after buying a device Kenwood KAC-648 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Kenwood KAC-648 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Kenwood KAC-648 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Kenwood KAC-648 you will learn all the available features of the product, as well as information on its operation. The information that you get Kenwood KAC-648 will certainly help you make a decision on the purchase.
If you already are a holder of Kenwood KAC-648, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Kenwood KAC-648.
However, one of the most important roles played by the user manual is to help in solving problems with Kenwood KAC-648. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Kenwood KAC-648 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
