Kenwood KAC-9152D Car Amp

I have the Kenwood KAC-9152D Repair Owners Manual. This is my E-Mail address. [email protected] send my a e-mail. & I will e-mail back 2 U w/the Manual ATTACHED

make sure it's well ventilated. If there's no air flow, then there is no way of cooling down and to protect itself it will shut off. Make sure the speakers are wired correctly as per amp specs. too many subs or subs connected improperly can draw too much current and shut the amp off, but you will notice this when you turn up the volume to a certain point and the amp shuts down.

either the wiring your running is short circuting,or the amp is shot, or the subwoofer is shot, try hooking the same speaker up to the other amp. along with the other speaker to the other amp, see if the same thing happens.

either bad ohm load or over heat if the ohs on the speaker wires to the amp are lower than specified use in the manual it will act funny cause it is pusing harder than its meant to and if it gets too hot either bad location or bad amp you can try turning the gain down a little until the amp stays on constantly at high volume

Either can either do it yourself like the guy above or take it to your local car audio dealer :)

Upfront Audio

There could be several problems. The following page should help you determine if you have a problem with the amp or something connected to the amp.

Amplifier in Protection Mode - Troubleshooting

Let me know if you have any other questions.

The amp says it's 1 ohm stable, so assuming the DVCs are dual 4 ohm, you should be able to connect all "+"'s together and all "-"s together, like the picture below:


As for the amp shutting off for a few seconds, it sounds like it's either:
A) Not getting enough power at high volume.
OR
B) Overheating.

The cap on the +12V to the amp should help, but putting a meter on the +12V might tell you whether it's dropping too low (<11V).

When you first turn the volume up, how long does it work fine before shutting off? Is it with the vehicle running or not?

Usually, protection mode is caused by one of these conditions:

• Shorted speaker outputs.
• Speaker output shorted to ground.
• There is an internal issue, causing DC voltage to be present on the speaker outputs.
• Amp overheats.
• Ground connection is insufficient for amp or HU.

I'm not sure of the history or symptoms of your amp, but those are the reasons why the amp could go into protection mode.

It sounds to me like you may have burnt a trace off of the bottom of the circuit board inside the amplifier. If you know how take the amplifier apart and look carefully at the traces. To be clear the traces are the lines on the bottom of the circuit board not the component side. Look carefully they can sometimes be hard to spot. If you find one solder a jumper wire across the two points. If you take the amplifier apart take care in treatment of the output transisors along the sides.

by jump do you mean all it does is thump and no sound besides thumping noise? if so put a better ground on your amp, double grounds work the best. please reply