Question about Kenwood KAC-9102D Car Audio Amplifier

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Amp heating up

If your ground wire isn't in a good spot would that cause the amp to heat up

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Here is the link for the user manual for your amp if you need it; http://akamaipix.crutchfield.com/Manuals/113/113KAC9102.PDF a poor ground connection can lower the voltage available to the amplifier by essentially adding a resistor in series with the amp. low voltages can often cause overheating in electronic components, but not always and unusual in amplifiers. The poor ground connection itself would get hot, even to the point of fire, and a certain amount of heat is conducted along the wire into the amp terminal, unlikely to be enough to make the amp run hot without you noticing smoldering cable insulation. What exactly do you mean by "not in a good spot"? - a ground connection is only in a bad spot if it is likely to get damaged, or not making a good connection all the way to the battery. - please explain more. A poor ground could lead to low voltage, which could lead to component damage, which could cause the components to run warmer than normal and is probably not reversible, but usually relatively easily repaired. Page 2 of the manual describes the protection function, which should activate if your amp is getting too hot - if it hasnt activated then most likely the temperature you are experiencing is normal. The protection will also cut in if the ground is bad. Hope this helps :)

Posted on Apr 14, 2007

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2 Answers

Just wired up my rear spotlights and wires are heating up what would cause this.
There are two (2) possible problems.
1. What gauge of wires are you using? If the wire gauge is to small it will cause the wires to heat up because the draw of power needed to light the lights is too heavy of a load. You should use 12 gauge or even 10 gauge wires for the lights. It also would not hurt to put an in-line fuse on the hot wire (usually red) so the fuse blows and doesn't cause a fire.

2. You may have a "dead short" where the hot and neutral wires are cross connected which closes the circuit and generates heat. If the wires heat up when the switch is off I would start at the switch and make sure the connections are good and no wires touch any other wires. You may want to check the wires all the way back to see if any insulation is off and the hot wire (red) isn't touching any metal of the vehicle. Remember that vehicles are grounded to the frame so if a positive wire is bare and is touching any metal at all it will short out.

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  • 2 Use a test light or voltmeter to detect breaks in the filaments that aren't visible to the ***** eye. Touch one lead of the light or voltmeter to a grounded metal part of the car and the other lead to a spot on the heating grid. If the light doesn't light or the voltmeter doesn't register a reading, that indicates a break in the filament.
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    The amplifier will turn on and give out put for limited time then it turns off and the red led comes on. ive rewired it twice now and the grounds are all good
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