Question about PPI DCX-600.4 Car Audio Amplifier

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AMP the short protection is coming on and is getting REALLY HOT REALLY FAST.

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If the amp gets hot or goes into protection with no input signal and no speakers/wires connected to the speaker terminals, the amp likely has shorted output transistors. It's not a complex amp. Any reputable shop should be able to repair it.

Posted on Sep 19, 2007

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Amp is getting hot too fast and too much

check all of your connections to ensure that you dont have a short, even a single strand is enough to short but possibly not enough to make the short circuit protection to kick in, also check your earth cable, make sure it is attached to clean metal and is a nice thick piece of cable, check your speaker specs to make sure they match your amp, turn down the gain a bit if you have turned it up high and maybe get some thicker + cable to run from your battery, big amps need big current, this means nice thick cables to try to hide but its worth it. No point hooking up a big amp with skinny little cables. Could cause the amp to try too hard to make up for the lack in power.

Hope this has been helpful.

May 05, 2011 | Performance Teknique ICBM-779 Car Audio...

1 Answer

I have an spl 1440 watt amp model st2-1440 that i cant get to turn on without 15 volts to the remote wire and then it gets really hot really fast. Any ideas why or how to fix it?

Generally a battery puts out 14.1 volts to the amplifier. The only way your amp would get really hot really fast is if the amp was configured to run at to low of an ohm load.

That amps spec is to run at 2 ohm stereo. But I do see an option to get 1400 watts with 2 ohm mono, but that would require 2 dual 2 ohm subs using only one voice coil bridged to the amp. If you run both subs with both voice coils in parallel you'll get a 1 ohm load and that will overheat your amp.


Ohms are the units that impedance is measured with. You can kind of think of impedance as the measure of how hard the amp has to push to get current to flow. The lower the impedance, the more power will be output from your amp. Unfortunately, the amplifier circuit wants to push against something, so that if the impedance is too low, the amp can perform badly, and even overheat and burn out.

Hope this helps!

Aug 01, 2010 | Car Amplifiers

2 Answers

How come it blows 30 amp atc fuse instantly even with the system off

check connections are hooked up properly if it blowin the fuse with it off sounds like something is really wrong on inside get it checked out

Jun 04, 2010 | Kicker KX200.2 Car Audio Amplifier

1 Answer

My amp keeps going into some safe mode and red light blinks and stops base to my sub. I have it hooked up to 1 15.4 Orion HCCA.

The "safe mode" on your amp usually kicks in for two reasons - the ohm load on the sub is too low for the amp (presenting a "short" to the amp), or it's going into thermal protection because the amp is too hot. From your description, it sounds like there's a short in the wire, the sub's ohm load is too low, or the sub is partially blown.

If you have another sub or speaker, connect it to the amp's output and see if the amp still goes into protection mode. If the amp goes into protection with a known-good speaker, then there may be something wrong with the amp's power supplies. If the amp works properly with another speaker or sub, then I would check the sub that's causing it to short out.

You may also want to check whether or not the amp is over heating by just touching the amp when it goes into protection. If it's just warm, that should be ok - if it's hot, then it might be working too hard. In this case, you may need to check the input voltage (12-14VDC) and the size of the power and ground cables. If your ground isn't properly connected, it can cause weird problems like over heating, shorts, erratic behavior, etc...

Mar 04, 2010 | Orion HCCA-D5000 Car Audio Amplifier

1 Answer

My amp goes into protection mode when i turn on my car. It gets hot too. I had 2 kicker 12" l5's and blew the subs with that amp, could i just have a simple problem with the amp? What are all my options?

Protection LED on, no output? Amplifi er is very hot = thermal protection is engaged. Test for proper
impedance at the speaker terminals with a VOM meter (see the diagrams in this manual for minimum
recommended impedance and multiple speaker wiring suggestions). Also check for adequate airfl ow around
the amplifi er. Amplifi er shuts down only while vehicle is running = voltage protection circuitry is engaged.
Voltage to the amplifi er is not within the 10–16 volt operating range. Have the vehicle’s charging and electrical
system inspected. Amplifi er will only play at low volume levels = short circuit protection is engaged. Check
for speaker wires shorted to each other or to the vehicle chassis. Check for damaged speakers or speaker(s)
operating below the minimum recommended impedance.
No or low output? Check the balance control on source unit Check the RCA (or speaker input) and
speaker output connections.

Jan 29, 2010 | Kicker ZX10001 Car Audio Amplifier

1 Answer

When my zr1000 amp kicks on it automaticaly averheats and shuts off it is also hot to the touch what should i do

One great amp !!! I would send it in to kicker. It looks like you may have one or more mosfets that are either shorted or on the way out. Does the amp have any protection lights that may give an indication of the source? Some thing that come to mind are: Shorted outputs, Speaker wires shorted or touching ground, power supply mosfet's

Nov 13, 2009 | Kicker ZR1000 Car Audio Amplifier

1 Answer

My amplifier keeps on protection always i want to know what can i do to solve the problem or what should be creating it? Someone told me that maybe a capacitor blow up but i opened it a they seem normal,...

Amps normally have several kinds of "protection" modes. Common ones are thermal, voltage, and short. Do you know which one you have? If the amp isn't hot, and goes into protection immediately before doing anything, we can rule out thermal protection. The next thing you should do is disconnect the speaker/subwoofer leads from the amp so that it only has power, ground, and remote connected. If the amp comes on with no speaker load, connect the speaker and see if it goes into protection. If it does, then you probably have a short-protection. Hope this helps.

May 14, 2009 | Performance Teknique ICBM-892 Car Audio...

1 Answer

Red light comes on and amp quits working

it is shutting down to protect it either have a short in your wiring or your speakers are wired at an ohm that the amp can not handle.mke sure that they are not wired wrong like + to - is it getting hot?

Mar 21, 2009 | Car Amplifiers

2 Answers

Kicker dx 350 amp

Remove amp from vehicle, connect Directly to Battery, then short REM line to Ground, see if amp comes out of "protect" If it does, you have either a short or a bad connection on your power wires between amp and battery, If testing amp directly to battery and it doesnt come out of protect, it meens you fried the amp and likely your problem is wiring between the amp and the speakers, or even the speakers themselves (shorted) .. If you Drive your speakers hard enough they can overheat and short out after a short blast... anywhere from 10seconds to 45 mins.. depends on many variables.

Jan 25, 2009 | Kicker DX350 Car Audio Amplifier

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