Question about Kenwood eXcelon KAC-X812D Car Audio Amplifier
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Posted on Jan 02, 2017
SOURCE: need help with cooling fan
Recheck your wiring if this is a new problem. Or if you know someone with a multimeter put it on ohms and check the resistance on the subs. Or if you have multiple subs unhook them all and hook them back up one by one and run it in between to see if the amp runs cooler. Remember you can not go to low on ohms. speakers hooked in parallel brings the ohms down fast. Four ohms and four ohms in parallel equals 2 ohms and so on. check the manual or on the amp somewhere to see how low of ohms you go.
Posted on Aug 25, 2006
SOURCE: Kenwood Excelon KAC-X521
According to page 7 of the radio's manual, E-02 means the amp has failed and DC is being applied to the speakers. It also says "Turn the POWER switch "OFF" and release the protection."
Posted on Mar 05, 2008
SOURCE: Kenwood eXcelon KAC-X810D
On the top of the amplifier are 4 controls. The first one is labeled as "input sensitivity". That is the adjustment you need to make. It would need to be set at around mid way between minimum and maximum.
One way for you to set it perfectly for your speaker would be to have it set first at about 1/4th of maximum, and then with the volume of the head unit turned all the way up with some heavy bass playing start to turn the input sensitivity up very slowly until you hear a small amount of distortion or rattling from the sub woofer. At that point you would back it down just a touch until there is no distortion or rattling from the speaker. This would have your amplifier set at a point where it is not pushing the speaker too hard but you would be getting the most from it.
Remember that any time you hear distortion, you are either pushing the speaker too hard or the amp too hard. The distortion is caused by clipping, which is not a good thing. If there is no clipping from the amp, and no abnormal sound from the speaker, you have it set properly to get the most from both the amp and the speaker and you are then minimizing the chance of damaging either the amp or the speaker.
Very wise decision on your part to want to use your equipment properly and not expect more than it is actually capable of. Many people just push their equipment to the max and then complain about how it broke down on them. If you follow my instructions you should be able to keep your sub woofer and amplifier in good working condition for as long as possible. It is no guarantee that it will never break down on you, but you will at least give it it's best chance for longevity.
Posted on Aug 26, 2008
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