Question about Earthquake Sound PH-D2 Car Audio Amplifier

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Protection my amp goes into protection as soon as i power it up. If i had a schematic i might be able to troubleshoot it but i don't know where to get one from. The amp was going into protection after running it for aprox. 20 min. Any suggestions

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Re: protection

Check speaker load. You might try starting with a 4ohm load per channel. Only one speaker per channel and DON'T bridge. If it now works OK then you are on the trail of the right answer. Good luck. If it is a speaker load problem, then you need to correct this at once before you fry your amp. Good luck.

Posted on Jun 18, 2007

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It is normal for them to go into the protect mode, If the speakers are not hooked up to it,

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Gos in to protection mode as soon as you aplly power

Check for a short circuit in the wiring of the output speakers or a shorted speaker voice coil, also check for correct voltage to the POWER AMP while in use... when an AMP goes in protective mode this means two things A SHORTED OUTPUT or A INCORRECT VOLTAGE TO THE POWER AMP. if all the above is OK than the AMP is defective. are you using correct speakers OHMAGE 4, 6 8ohms??? according to your AMP.

Good luck!

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I have a dual electronics 4 channel amp that goes into protect mode as soon as i throw power to it

unplug all the speaker from amp then power on. if you still have a protect light amp is bad and if you have no protect light continue to hook up each speaker one by one while amp is on till you get a protection light and that speaker would be the source of your problem

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My amp keeps going off on protection mode as soon as the bass starts bumping

check powers and earth, unplug sub and crank it up see if it still goes into protect if it doesnt the sub is too much load for that amp and could have damaged the amp, if it still does it then its a fault in the amp or power problem make sure you have good thickness 4gauge and good earth

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In protection mode do you mean the light comes on and it plays music and stuff? If that's the case, that's what the amp is supposed to do. Protect itself from a power surge

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Kicker amp goes into protection mode as soon as i turn it on

Have you tried powering on without speakers connected? Have you tried powering on with no input? If either senerio causes the amp to NOT go into protection mode, then there is most likely a short in wiring. Use a multi meter to isolate.

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In most of Rockford's amps, the low voltage detection is connected to the remote input. If the remote voltage is too low and they use the same circuit on this amp, it could trigger the protection circuit.


Disconnect the head unit's remote from the amp. Use a fuse holder with a 3 amp fuse to jump between the B+ connection and the remote terminal of the amp. If the amp powers up, the head unit's remote output may be defective. If it blows the fuse, the remote input or part of the power supply is damaged. Do not try it with an unfused jumper.

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1 Answer

Protection mode

Driver ICs or transistors,op-amps that create the idle bias circuit,the protection circuit, the power supply. You should have a schematic of this unit and know how to check the solid state devices for shorts. GOOD lUCK

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