Question about Kenwood KAC-8101D Car Audio Amplifier

2 Answers

Amp not powering up??

Ok i hooked up all the wires. (ground, battery, head, and speaker wires) first time it worked for like 10 seconds then the sub cut out. i looked at the amp and the light was off. so i turned the car back on and the light comes on for not even a second then cuts out again. it does this every time i turn my stereo on. i moved the ground wire and it does the same thing. what could be the problem?

Posted by on

2 Answers

Re: Amp not powering up?? - Kenwood KAC-8101D Car Audio Amplifier Car Amplifiers

Or you could have to low of gage wire??

Posted on Apr 22, 2008

  • Level 1:

    An expert who has achieved level 1.


    An expert who has answered 20 questions.


    An expert that hasĀ over 10 points.


    An expert whose answer gotĀ voted for 2 times.

  • Contributor
  • 45 Answers
Re: Amp not powering up??

The sub amp may be damage, shorted. you may have a wrong speaker hook-up the first time you use it. too low impedance may have damage the sub.

Posted on May 15, 2007

Add Your Answer

0 characters

Uploading: 0%


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


3 Points

Related Questions:

1 Answer

Got a problem with my car amp.Everything was working fine until 2day.Amp goes in to protection mode.Jumps from power to protection indicator every i would say 3 seconds and each time it goes in to...

Ok check the remote wire running from the headunit to the amp should be giving v12 feed whiles headunit is on.

check or change grounding position.

take cover off the amp as the circuit may be over heating.

Sep 22, 2010 | Car Amplifiers

1 Answer

My sub woofer has recently stopped working. I borrowed and hooked up a friend's subwoofer and still doesn't work. However all my other speakers in the car are still working. Could this be the amp? If the...

If you only have the sub connected to the amp, the other speakers would still play, if they are just connected to the head unit. I would check for power and remote power to the amp, and check the ground, if those are ok, I'd say the amp is bad.

May 21, 2010 | Rockford Fosgate Punch 401S Car Audio...

2 Answers

I have checked all connections to my amp battery,head unit,remote or trigger wire,fuses,power cable,rca leads,ground wire,amp has a green led light on it indicating if it works ok,red if it`s not,light...

Your amp could be in protection mode! Sometimes turning up to high or wires touching will put in protection mode! It will have to be unplugged for a day or two to drain all power out of the memory. Leave accessorie/ignition wire hooked up, just not power and ground wiring. It should reset itself.

Jan 22, 2010 | Lightning Audio B4.250.2 Car Amp

1 Answer

Amp burned out but fuses still good?

this is caused by inproper wiring from the speakers/subs to the amplifier.. an amp will still put out power to subs and speakers when it's wired improperly but it won't last for very long doing it... 6 months is longer than usual....

Dec 05, 2009 | MA Audio M1900XE Car Amp

1 Answer

Amplifier and sub installation in a boat.

norally grounding them in the same place is ok but it could just theres not enough power from the amp too power two subs try hooking up one and see if that gives you the sound your looking for

Jul 09, 2009 | Car Amplifiers

1 Answer

Wiring issues

ok here is how it goes power wire from the battery all the way to amp..then ground wire from amp to a good ground on car then the remote wire which you have to run from the amp to the back of your stereo which in most cases is blue then hook subs from the sub box to the amp

May 30, 2009 | Legacy 2 Channel 1600 Watt Bridgeable...

1 Answer

Amp doesn't come on

Hello rheabarb,

You did not say whether or not you checked the wiring going to your subs. Many times, a shorted or grounded speaker wire will cause an amp to fail. And if the amp powers up OK with the subs disconnected, I'd suspect one or more of the wires.

Hope this helps.

May 19, 2009 | Clarion APX1300 Subwoofer Mono Amp - 300W...

1 Answer

I cant hook up my amp

Hello cesar199064,

These are the steps you required to install your amp and subs:

1) Purchase an amp wiring kit with 2 or 1/0 gauge power and ground wires.
2) Decide on a location to mount the amp where it will get proper airflow and will not interfere with operation of the vehicle. Closer to the battery is better. Decide on the location and install the sub enclosures.
3) Locate a place on the metal body of the vehicle within about 3" of your amp for the ground. Connect the ground wire to the amp ground terminal and to BARE METAL on the vehicle.
4) Run power wire from battery positive (+) using one of the amp kit ring terminals through a 100A fuseholder to the amp positive terminal. DO NOT install the fuse yet.
5) Run a "remote" wire from the remote turn-on lead (usually blue or blue/white) of your dash mounted head unit to the amp turn-on terminal. Run a set of RCA cables from the preamp or subwoofer outputs on the head unit to the amp inputs.
6) Run speaker wire, preferably at least 12-gauge, from the amp output terminals to your subs.
7) Check all of your wiring. Make sure that no insulation was damaged or peeled off during the running process. Make sure there are no loose strands touching adjacent terminals or bare metal.
8) Use a multimeter set to read "ohms" and test from the negative battery post to the amp ground terminal. You should read "0".
9) Install the fuse.
10) Turn on your head unit and listen to those big Kickers thump.
11) Adjust the amp settings according to your manual.

The best place I've found for in depth information on audio installs is The Install Doctor. You'll find step-by-step procedures, color photos, wiring details, and even the tools required. I recommend that you begin with the "tech docs" link and read through some of the PDF documents.

Hope this helps.

May 08, 2009 | Kicker ZX10001 Car Audio Amplifier

1 Answer


your amp may be overheating, or you have it up too loud and the surge protector is shutting it of in fear of damage to your amp.

Apr 24, 2008 | Kenwood KAC-7202 Car Audio Amplifier

1 Answer

My amp is not working

For the visonik, you should check your speakers. You can use a D-cell battery. Remove the speaker wires from the amp and connect each speaker across the battery (for no longer than a few seconds). The speaker should pop each time the wires are touched to the battery. If they don't, the speaker is defective (assuming the battery isn't dead).

If the speakers are OK, you need to confirm that you have a good signal feeding the amp. You can use the RCA cables from another working amp in the vehicle. Do this with the amp that had the power light lit.

If you have signal going to the amp and the speakers are OK, the only two things left are the power supply feeding the amp (from the battery) and the amp. If you have B+ and remote voltage AND a good ground, the amp is defective.

For the pyramid, the amplifier probably has shorted output transistors. The amplifier will have to be repaired.

Nov 16, 2007 | Visonik V117SX Car Audio Amplifier

Not finding what you are looking for?
Kenwood KAC-8101D Car Audio Amplifier Logo

Related Topics:

114 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

1333 Answers

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

Answer questions

Manuals & User Guides