Question about MA Audio HK4000D Car Audio Amplifier

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MA Audio HK4000D please help me ?

I have a MA Audio HK4000D the protect light is on i know the speakers are good wires are good , on the amp ,the volt meter and the temp gauge and fans come on but no boom, i have FOUR JL Audio W7" 13'' i pull my sub off TWO 1800 kenwood d class mono amps ,a dont have manul for the amp.

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I suggest u look at the spkrs inside the box and see hw they are wire inside the box that could be one your problem[bassmasteraudio@yahoo.ca]

Posted on May 26, 2008

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Turn the system off and disconnect the speakers. Turn the system on. If the amp still goes into protection mode with no speakers connected, then most likely the output transistors are bad. If the protection light is off, hook up one sub at a time until you find the one that is causing the problem

Posted on May 21, 2008

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I have a ma audio hk-602sx and my protect light wont go off and somthing is clicking inside and as it clicks the protect light blinks.


Disconnect the speakers and then try it again...there may be a shorted speaker or wire if the amp comes out of protect after you disconnect the wires...if the amp stays in protect after you disconnect the wires then there is a problem inside the amp with the circuitry and it will need to get serviced by an electronic tech

Jan 23, 2011 | MA Audio HK602SX Car Audio Amplifier

1 Answer

My m.a amp whont work. The protection light turns on. what could be the problem


The protection light comes on when a wire is crossed, shorted, loose, etc. Check your wires, and then double check them, at the amp, and from the head unit, you may have a short or loose connection. If you have any kind of Y adapter on your RCA cables, this could also cause this problem.

It could also mean your amp is dead. If this is the case, get it serviced.

Jul 14, 2010 | MA Audio HK4000D Car Audio Amplifier

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

Rockford P5002 not getting enough power


7 volts will not be sufficient for the amp either for power or remote. Also check to make sure you speakers wires are not crossed. If its goin it to protect mode immediately the amp is detecting a fault and is not turning on.

Sep 12, 2009 | MA Audio HK4000D Car Audio Amplifier

2 Answers

Gain control


I would check ebay i know i bought one from there before. Hope this helps

Jan 13, 2009 | MA Audio HK4000D Car Audio Amplifier

1 Answer

Ma audio hk 4000d


you have definately blown a output channel, or power supply. Send it in for warranty.

Jan 09, 2009 | MA Audio HK4000D Car Audio Amplifier

1 Answer

My ma audio hk 4000 amp is powered on no sound coming thru subs amps brand new


If there is no protection light on, be sure the input is on. Some head units need to be turned on manually (factory set to OFF).
Verify the subwoofers are wired properly.
A list of your components would help to solve your problem.
If it is new, it should still be under warranty - worst case scenario output transistor(s) blown, or power supply bad.

Jan 09, 2009 | MA Audio HK4000D Car Audio Amplifier

1 Answer

Having no sound.


try putting your remote wire on a hotwire thats not on your headdeck

Dec 14, 2008 | MA Audio H2K-TP Car Audio Amplifier

1 Answer

MA AUDIO HK4000D SUBS CUTTING IN AND OUT ???????


for a amp that big you need atleast 2 gauge thats your problem

Nov 23, 2008 | MA Audio HK4000D Car Audio Amplifier

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