Question about Kenwood KAC-7202 Car Audio Amplifier

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Ground sparking Is it normal to have ground wire spaking slightly

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If the ground on the amplifier is sparking, it is either -
arcing across to the power or remote terminal via a stray wire strand, or loose inside the terminal.

If it is sparking at the chassis ground (car) - the screw is loose.

It is not normal to spark, and needs attention before the spark turns into failure of the amplifier.

Thank you for using FiXya - A FiXYa rating is appreciated!

Posted on Jan 22, 2009

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Ap 1000 amp checked wiring ground ect . the amp comes on when i turn the radio on at no volume and beats steady for no reason jumped remote wire same . plugged audio jacks and the same . please help


The most common problem for the symptom you describe is a "ground loop". There's a slight difference in the ground potential between the source unit and the amp itself. It may be caused by a ground on one or both of the audio inputs. It may be caused by the amp case itself being fastened to a metal portion of the vehicle. It may be a grounded speaker lead.

Of course the amp itself could be defective.

1) Isolate the problem. Disconnect everything except power, ground, and remote.

2) Connect the subwoofer(s). If the symptom immediately returns, it's most likely the amp ground or a speaker lead.

Mar 21, 2011 | Planet Audio AP1000D Car Amp

1 Answer

I have a JL 1000/1 and the low ohm light switch on and off.. The terminal connector is slightly loose.. with a jiggle of the ground wire the amp switch back to GREEN and plays normal..


Check the ground wire to the car make sure that you have bare metal and that the contact between the car and the wire is good. Ensure that the ground wire is in all the way. What size ground wire are you using. I would say don't use smaller than 4ga for a 1000 watt amps.
Also has the amp been screwed or velcroed to the box? Sometimes amp connections become loose from the vibrations of the bass. So it's possible it might be an internal issue or that the wire isn't in all the way.
I would suggest also taking the amp completely out of the car and inspecting the terminals to make sure they aren't loose or corroded.

Mar 06, 2011 | Jl Audio 1000/1 Car Audio Amplifier

1 Answer

My hifonics am 1208d is sparking every time I connect the ground wire! Seems that the ground connection on my amp has mysteriously turnt to a positive? Please help, how can I diy fix the amp my self? I...


Try reversed the connection, hang the positive supply together with the ground. Then connect the ground first before the positive supply. If the spark is still there then you are confirmed that you have a short on the unit. Fixing is not DIY because it is quite technical. I rather suggest to send it to a repair shop to isolate the shorted parts. A series of test will be perform to locate where the short come from.
Please rate my advice.
Thanks for using fixya...

Jan 09, 2011 | Hifonics Car Audio & Video

1 Answer

My amp keeps blowing its fuses whenits plugged in


Go over all your wiring. Make sure your power wire isn't grounded somewhere. If your power wire is touching any bare metal it will spark and blow the fuse the second you touch the power to your amp. Make sure your in-line fuse is about a foot from your battery, and make sure you have your ground wire grounded securely to the main chassis of the car/truck and that it is either same size gauge as your power or even a little bit bigger gauge. Also make sure no strands of wire from your ground or power wire are loose and reaching over touching the other where you plug them into the amp. If the ground and power touch eachother they will blow the fuse and possibly cause permanent damage to the amp.

Jan 06, 2011 | Pioneer Car Amplifier GM-5100T - 2CH 760...

1 Answer

Red light on fusion amp?


Hello,

This is a rather common problem. The red light indicates it is not correctly getting power.

So trace your power wire from the battery--> check the fuse on the wire if there is one---> to your amp. If that is all in working order next move onto the ground wire.

Make sure it is sparking on the surface that you have it grounded at. If it does not spark when you touch the ground wire against that surface then you are not correctly grounded. It should be bare metal, something connected to the cars frame.

Try this and post back if you still need additional help. Thank you for choosing Fixya!

Oct 01, 2009 | Fusion Digital designs EN-AM6004 Car Amp

1 Answer

!!!red protect light is on!!!


Hello beaugarcia26,

Unless the amp itself is defective, there's a short or ground somewhere.

First disconnect the speaker wires and RCA (or high level) inputs, leaving just ground, remote turn-on and power leads connected. Then see if the amp powers up normally. If it doesn't check the ground with a multimeter and make sure it is good. If the amp powers up normally, check the speaker, speaker wires and inputs for shorts or grounds.

Hope this helps.

Sep 02, 2009 | Hifonics Brutus BX 1205D Car Audio...

1 Answer

My amps protection circuit keeps cutting on and off when i hook up my amp


Hello m_george191,

Usually an amp will go into protection when there is a problem with the wiring, impedance load, or when overheated. Immediately when hooked up, it probably isn't overheating.

Most likely, there's a short or ground on a speaker wire, an input, or a faulty ground to the amp itself. Frayed or broken insulation, stray wires shorting across the terminal blocks, and shorted voice coils can all cause the protection circuit to activate.

First check your power and ground wires. Then disconnect the speakers and inputs and see if the amp powers up normally. If the amp still goes into protection with all wires other than 12V +, Ground, and Remote disconnected, the amp itself is defective. If it powers up normally with all other wires disconnected, reconnect the inputs one at a time to determine if one of them causing the problem. Likewise, reconnect the speaker wires one at a time.

Hope this helps.

Aug 31, 2009 | Rockford Fosgate Punch P325.2 80W x 2 Car...

1 Answer

Battery hook-up


You must have inline fuses at the point where the wire taps off of the power source. If you're tapping off a wire that has no fuse (like the starter solenoid), you must insert a fuse.

When making the connection to the amp, there will be a spark initially. If you hold it on for a second, pull it off and then touch it again, there should be little to no spark because the capacitors in the amplifier would have charged when you made the initial contact. If there is an intense spark each time you touch it and the amp is not on (no remote voltage applied), the amp may be defective.

Let me know if you have any other questions.

Aug 18, 2008 | Kenwood KAC-7202 Car Audio Amplifier

1 Answer

Ground Wire Hook-up


MTX has the hookup diagram here: http://www.mtx.com/caraudio/products/manualsQuickInstall/amps/RTP251D_InstallSheet.pdf If you have the original wiring harness, the ground wire is normally black. The amplifier case or chassis is ground connnected on amps I've seen as well.

Aug 06, 2007 | MTX Thunder 251D Car Audio Amplifier

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