Question about Earthquake Sound PH-D3 Car Audio Amplifier

1 Answer

Earthquake phd 1 channel and 2 channel

I have two amps that have the same problem. The light turns on as if everything is normal but it puts out no sound. If the RCAs are hooked up you can hear a hum in the amp that goes with the beat.

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert who has answered 20 questions.


    An expert that hasĀ over 10 points.


    An expert whose answer gotĀ voted for 2 times.

  • Expert
  • 113 Answers
Re: Earthquake phd 1 channel and 2 channel - Earthquake Sound PH-D3 Car Audio Amplifier Car Amplifiers

Check for broken rca input ground

Posted on Aug 09, 2007

Add Your Answer

0 characters

Uploading: 0%


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


3 Points

Related Questions:

1 Answer

I have a earthquake 700.1 amp with nothing else hooked up to but the power wire and remote and ground i am getting a red protection light anybody have a answer .

Your power supply is toast. Might be repairable at a electronics repair shop. But for an Earthquake amp I wouldnt waste the money.

Dec 22, 2010 | Earthquake Sound PH-700.1 Car Audio...

1 Answer

Problem with Eathquake amp 2000w

the amp dose not have any such internal batery it is probly tosted call me 256-698-9903

Jul 05, 2010 | Earthquake Sound PH-D2 Car Audio Amplifier

1 Answer

Red light is on when i connect input cable earthquake 1000w amp

Cables are either shorted, or deck is putting out too much power for input on amp... many new head-units will put out up to 7v on the output jacks (RCA) the amp may only want to see up to 1v will need to consult head-unit manual for adjustment of outputs.

Jan 22, 2009 | Earthquake Sound PH-D2 Car Audio Amplifier

2 Answers

6 channel power 1000watts earthquake amps red is on

This is normally a grounding problem in the amplifer. If you have a volt meter, check the voltage at the ground of the RCA input on the amplifier. If that voltage is anything more than just a few millivolts then you have a problem in the pre-amp of the amplifier. You should also only connect or disconnect the RCA jacks while the system is off. Otherwise you can get a loud popping noise that can damage the amp or the speakers. Check that voltage on the amplifer RCA jacks with the head unit not connected to the amp with the RCA cables, then if that is OK, check the RCA cables coming from the head unit. You may even have a voltage on those RCA's coming from the head unit, in which case, you have a problem in the head unit. You will be looking for a DC voltage, if you have anything more than just a few millivolts (0.070 +/- DC volts) on either of those then you have found the cause. After that, it will require a technician to be able to troubleshoot the amp or the head unit to determain why you have that DC voltage where it should not be.

Let me know if I can be any more help,


Jan 22, 2009 | Car Amplifiers

2 Answers

Protection light goes on on Power up

same thing happened to me a while back it is one of the reistors inside the amp, when you took the turn it anything bumped it or it fell it might have broken off, shake it and see if anything inside rattles, if so then you need to take it to a repair shop or some who can solder

Dec 14, 2008 | Earthquake Sound PH-D2 Car Audio Amplifier

2 Answers

Bass sounds flat when volume is increased

probably your power is too short, increase your gauge wire, and your ground wire of the amplifier has to be shortly as possible, and the positive has to be enough to support peak power, you can also put a big capacitor on the positive wire to give some more power while the bass peak.

Apr 26, 2008 | Earthquake Sound PH-D2 Car Audio Amplifier

1 Answer

Xplod amp

You have 3 power connection, +12v goes directly to your vechile's battery (make sure this is fused) REM connects to your head unit which tells the amp when to turn on and off (usually very thin wire, comnpared to the gnd and +12) Te gnd you already know where it goes. Then connect your sub to + and - speaker out put. If you run this bridged it will increase your output, must be 2 channel to bridge to 1 channel or a 4 channel bridged to 2 channels. Hope this helps.

Sep 13, 2007 | Sony Xplod XM-554ZR Car Audio Amplifier

1 Answer

Fan on Amp turns off with everything off.

yes , it is normal for the fan on the amp to turn on when the internal tempature reaches 110 degrees the amplifier is not an intellegent device, all it knows is the temp threshold has been reached and its themostat will close the relay and try to exhaust the heat from the amplifier....I have this same amp, and I live in florida...thank goodness it is a very minimal draw,,,btw if it was a 100 outside it was well above 100 inside your car and even hotter inside the amp ,,the heatsink will conduct heat inside the unit when the unit is the unit is behaving normally...Congratulations for buying a high quality piece of electronics

Jul 10, 2007 | Earthquake Sound XTREME 900W.5 Car Audio...

1 Answer

MTX 502 2 chanel amp Pre amp problem?

Unless your amp is 1 (one) ohm stable then you may have fried it. When you attach a 2 ohm load across a bridged amp then you have effectivly placed each output channel on a 1 ohm load. Not a good thing in most cases. Try hooking up ONE speaker on one channel and one input to that one channel one at a time. Then switch the speaker/input to the other channel and see if you can get either or both channels to work independently. Needless to say you must turn the amp off before you make ANY change in the wiring.

Jun 25, 2007 | MTX Thunder 2-Channel Amplifier 502 Car...

Not finding what you are looking for?
Earthquake Sound PH-D3 Car Audio Amplifier Logo

Related Topics:

234 people viewed this question

Ask a Question

Usually answered in minutes!

Top Earthquake Sound Car Amplifiers Experts

Tygh Duval
Tygh Duval

Level 2 Expert

290 Answers

Pablo Gonzalez

Level 3 Expert

733 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers

Are you an Earthquake Sound Car Amplifier Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides