Question about Kenwood KAC-9152D Car Audio Amplifier

2 Answers

Short In System.

Ok so i have this kenwood and a 1 farad cap hooked up to it and it keeps overheating. It seems i ahve a short in the system because when the sub hits i can see a lil electric shock going from the case to the screws where I screwed the amp down. So im pretty sure the case is getting power when it shouldnt and its causing overheating. Can someone please explain how to fix this short?

Posted by on

2 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 3 Answers
Re: Short In System.

Obviously you are using the mouning screws as the power ground connection. Disconnect mounting screws from the sure a short heavy gage wire is connected from the ground of the terminal strip to the car body. clean bare metal only with a star washer. If the connections are not good the terminal strip will over heat and melt.This is common.measure with a DVM the case of the amp to the car body.disconnect the input jacks. turn on the system. The voltmeter should read 0 volts. I ou have any other reading or the amp won't turn on with the input jacks removed you hve an open power ground on the circuit board. If the power ground is open well the voltge wil find the next available way to get to ground. Usually will burn out sigal grouns in head unit and amp. Take out the board and look at the trace connectedto the terminal ground. Jumper and resolder it.

Posted on Sep 08, 2007

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.


    An expert who has written 20 answers of more than 400 characters.


    An expert who has answered 20 questions.

  • Expert
  • 72 Answers
Re: Short In System.

Sounds to me like you have a bad ground. Usually the amplifiers case is ground and you should see no spark. But if the ground is bad. When the downbeat hits the current draw can go up by multiples. The ground is dirty or too small the amplifier tries to draw it elsewhere. So even though you have a cap. You would be running low voltage under load. causing the switchmode power supply in the amplifier to work harder to keep up the rail voltage in the amplifier. The transistors switch faster. The faster they switch the more heat they create. And your amplifier gets hot. The only other thing is if the toryoid coil in the amp is shorting. causing high voltage to case. But this will generally burn out the head unit in the vehicle unless you have a ground loop isolater. To determine check to see if there is unusual voltage at the RCA's.

Posted on Aug 25, 2006

3 Suggested Answers

  • 142 Answers

SOURCE: kenwood 350 w-2 amp wiring

you can simply take the input and connect it in parallel to the input of the second amplifier. The output of one amp will go to one speaker, and the output of the other amp will go to the other speaker.

The inputs of amplifiers are "high impedance" so putting more than one in parallel won't put any strain on the radio circuit.

Hope this helps.

Posted on Mar 27, 2008

  • 20 Answers

SOURCE: power from the kenwood 9103D to the Kicker comp 15's is on n off

Most times I hear of people turning up the volume on a head unit and cutting off on the amp it tends to be wired to a speaker with the wrong impedance. I googled kicker comp and got tons of different models, not to mention almost all of them were 250 watt rms. That amp is 900 watt RMS at 2 ohms. If you only have 1 woofer, you can't possibly wire it wrong being all the subs I've seen in the results were 4 ohm. If you are using just one though, you should get a larger speaker, both 2 ohms and 1000 watt rms to prevent distortion. I'm afraid I can't answer your post without further information on the sub you are using.

Posted on Nov 21, 2008

  • 1 Answer


i have the same amp running 2 type r 12". It cuts out also. I put 0 gauge power wire and a capacitor and it still does the same thing. I had to buy 2 and run each sub independenty at 4 ohm.You can run that amp all day long, full volume at 4 ohm. But is hates running large load at 2 ohm.

Posted on Feb 25, 2009

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

3 Answers

Describe how to connect a scosche 500k micro farad

Put the capactior in parallel with your battery right before the amplifier. So Postive lead of cap to your 12 Volt line and negative lead goes to ground. It is also suggested that you charge the cap before placing it directly in parallel with the 12 volt rail. yo ucan do this by using a 1000 ohm resistor with a power rating of 1 watt. Disconnect your amplifiers so it is just your cap and battery. Replace the fuse with the 1000 ohm resistor. Once the resistor is in place hook up your cap. It will take a little bit for it to charge. RC time constant is T = Reistance X Capacitance. So 1000 ohms X .5 Farads = is about 8 minutes, or you can just measure the voltage with an volt meter and when the cap reads 12VDC you can then hook it up. BE CAREFUL NOT TO SHORT TERMINALS. THIS CAPACITOR I STORING A LOT OF CHARGE.

Jan 26, 2010 | Car Amplifiers

1 Answer

Hey i had 2 car amps +for 4 speakers(140W maxi) and a sub 12inch

1 cap, either .5, 1 or 1.5 farad will be fine. they make 5 10 and 20 farad that cost way more than u need to spend for 400 watts RMS. i like the rockford fosgates, you can get a low cost Tsunami, just make sure you follow the charging instructions.

Oct 20, 2009 | Car Amplifiers

1 Answer


You usually don't need a capacitor because your car can keep up with the power requirements, especially since your system isnt too big (no offense). But if you wanted to get one, i would only get a 1/2 or 1 farad cap.

Jul 26, 2009 | Legacy LA588 Car Amp

1 Answer

Car subwoofer problems

The cable should not cause the problem unless it is shorting out somewhere on the remote or positive cable. I would use a larger gauge wire first as this is the cheaper way to go, and if the same problem occurs you are having a short in the sub or box causing the protection mode. You will have to back trace to find possible cross connections.

Jun 21, 2009 | Pioneer Car Amplifier GM-5100T - 2CH 760...

2 Answers

Amp turns off for a bit and back on when it hits hard

You do not have enough power coming from our car battery, your alt. may be going out. Look into a 5 farad power cap to store more power...

Apr 18, 2009 | Kenwood KAC-9152D Car Audio Amplifier

1 Answer

Keep popping fuse

you got short in the curcuit

Apr 03, 2009 | Kenwood KAC-7202 Car Audio Amplifier

2 Answers

1 amp cuts off

i had this same prob. & i run 2 amps as well, cameto find out i had a neg. & positive touching , so check all ur wiring for tht amp..

Apr 01, 2009 | Kenwood KAC-9102D Car Audio Amplifier

1 Answer

Power Cap or Deep Cycle Battery?

your amplifier has the following specs:

Output Power at 12V:
1 x 200W @ 4 ohms (0.05% THD, 20Hz - 20kHz)
1 x 400W @ 2 ohms (0.5% THD, 1kHz)
Output Power at 14.4V:
1 x 300W @ 4 ohms (0.05% THD, 20Hz - 20kHz)
1 x 600W @ 2 ohms (0.5% THD, 1kHz)

a .5 farad cap should work fine for 12v applications, a .75 will work fine for 14.4v applications. If you plan on upgrading the stereo system in the future, you should probably just pick up a 1 farad now and save trouble later.

when mounting the cap, mount it as close to the sub as possible. i recommended a deep cycle battery in an earlier solution due to the power handling requirements for the amp and speaker combo, any time you are working on a competition or semi-competition setup, you will want to isolate your audio system as much as possible from your vehicle's main electronics. i normally use a deep cycle battery if it's going to be a comp/street combo as you can sit at the lake and jam all night without killing your main battery. for comp only use, i stick to optima batteries, they seem to work well and can dump loads of amperage pretty quick.

if you go the dual battery route, you will want to buy a battery isolator to make sure the two batteries are independent of each other.

hope this helps,

Nov 19, 2007 | Kenwood KAC-X401M Car Audio Amplifier

1 Answer

Protection Function flashing with error code E-2

I do believe that error is a short between the positive and negative terminals. Check your wiring and measure with with a ohm meter, it should be more that 1, if not 2 ohms. With the wires from the speaker termanils removed and the amp off check the condinuity between the two terminals, there should be none...if you have some that thats where the short is occuring and work needs to be done on the amp to fix the problem

Dec 15, 2006 | Kenwood XXV-03A Mono 25th Anniversary...

Not finding what you are looking for?
Kenwood KAC-9152D Car Audio Amplifier Logo

201 people viewed this question

Ask a Question

Usually answered in minutes!

Top Kenwood Car Amplifiers Experts

Matthew Spark
Matthew Spark

Level 3 Expert

1042 Answers

Tygh Duval
Tygh Duval

Level 2 Expert

290 Answers

Pieter Vleeshouwers

Level 3 Expert

1330 Answers

Are you a Kenwood Car Amplifier Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides