Question about Sony XM-1252GTR Car Audio Amplifier

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Amp not getting any power

Ok funny thing right ex girlfriend steals ur subs and cd player and amp while your sleeping... Well I was lucky and got them back but i have it all hooked up correctly and no power what so ever running to amp yet the wires are fine i got power but not connecting power to the amp for some reason and no the amp isnt blown but it has been unscrewed so any helpful info to get the thing working would be nice thankyou for your help

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SOURCE: Amp powers on but sub does not come on

I would double-check your RCA's on the amplifier. You should hear a thud if you unplug them. If not they are either not hooked up or defective.

Posted on Feb 08, 2009

  • 156 Answers

SOURCE: LED power protection light not turning on

Check the fuse on the amplifier; if it's good, then you need a multimeter or voltmeter for further testing. With the meter's black probe on your amp's ground terminal and the radio turned on, both the power and the remote terminals should test at about 12 volts. If neither terminal shows voltage, you may have a problem with your ground connection; if both do, there's a problem with the amp.

Posted on Mar 07, 2007

  • 203 Answers

SOURCE: my amp works but my sub doesn't...!!!????????????

Whats the condition of your amplifier? New , Used, Old?


You might have a blown channel off your amplifier, this may cause little or no sound. You will have some distortion, crackle sound and then maybe nothing at all. What kind of subs are you running to it? Make sure the subs arent blown and check the voice coils to see that they are not torn off the subs , these are the 2 little silver or copper wires that are connected from the speaker connectors to the sub itself.


Let me know what happens?

Posted on Oct 21, 2007

  • 3 Answers

SOURCE: No sound from Subwoofers after hooking up amp??

you can **** yourself

Posted on Mar 09, 2009

  • 4 Answers

SOURCE: sony xplode 1000w amp has green light puts out no power to subs

check the speaker, the subs. i had same problem, same reading on volt, its correct as way it should be. if its not the rca plug then it has to be speaker, i replaced the amp and it wasnt that, it was the speakers after all...

Posted on Apr 20, 2009

  • 11 Answers

SOURCE: I have a Sony Xplod 800w Amp running a 10'

it sounds like it could be a blown channel in the amp. if the sub was blown it would still work just sound horrible. i have blown many subs and amps. you can bring it to an audio shop near you and they can fix it. i just got one of my channels fixed for 35$

Posted on May 13, 2011

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I have 2 amps instalkled in my car one is sony 1200w 2 channel amp for speakers and one is solid audio f2500d for 3 subs my sound and every thing was good but suddenly from yesterday im having trouble when...

First disconnect the CD head unit from the sub amp and see if the other amp works. If yes, the problem is the wires to the amp, the amp itself, or the subs/sub wiring. If no, the problem is the head unit--probably an internal short.
If the other amp works with the sub amp disconnected, reconnect the sub amp to the head unit, but disconnect the sub wires from the amp. Try the CD player. If the amp goes to protect with no speaker wires attached, the amp is bad. If the amp is OK, the problem is the subs or sub wires. Hook the wires up to the amp again, but disconnect them from the speakers. Try the player again. If the amp goes to protect, the problem is the amp wiring. If not, the problem is the subs. Check the impedance of each sub using an ohmmeter to determine which amp is out of spec.
Please let me know if you have questions, and thanks for using Fixya.

Jun 11, 2011 | Solid Audio F2500D 1-Channel Amplifier Car...

3 Answers

Why do i need to open my gain up to 3/4 to full turn inoder to achieve a loud bass?Im using punch 2400 amp and 2 12" kicker.

the amp may not be powerful or your setting on the cd player is not right try adjusting the cd player. turning the gain all the way up will damage your subs even go above halfway

Sep 19, 2010 | Rockford Fosgate Punch 801S Car Audio...

1 Answer

Is there a wiring diagram for the nikkai EAPA450 Amp

Hi, if you still need a photocopy of instructions email me

If you want instructions in brief this involves POWER CONNECTIONS, PHONO LEAD & SPEAKER CONNECTIONS:

POWER (At the same time when routing these wires, I would connect the PHONO LEADS from the car cd player to the amp, if your car cd player only has 1 preout (1red & 1 white) then you will need two phono splitters, a female to 2 males. Phono leads carry the unamplified sound from cd player to the amp):
~ Permanent 12V+ (Thick lead that is fused direct from battery all the way to the amp, wire must be 20a to 30a +, hence 1cm diameter wire, known as AWG8, Maplin sell cheaper kits then most)
~ Amp REMOTE (A thin insulated cable (5a is OK) from car cd player amp remote wire, this turns the amp on when the cd player is on, if your car doesn't have an amp remote wire, suggest nearest ignition supply or seperate switch that you turn on when you want to turn on the amp)
~ GrouND 12V- (Insulated lead (20a to 30a) to nearest part of unpainted car chassis such as interior panel screw hole, instead of an insulated cable all the way from the batery, this is common practise.

Each speaker has a - negative & + positive, these must connected correctly. The amp has 4 channel, 2 channel labeled as front, 2 channels labeled as rear. Using speaker wire, connect cable from amp to speakers. Note: Ensure the speakers being connected only receive sound from the amp (Not cd player as well, as would damage players or at the very least impair sound)
The amp has a feature called bridgeable this means a sub 8" or 10" sub can be powered by 'bridging' two channels. For example there are 2 ways to bridge power a Sub on the NIKKAI EAPA450:
i) Sub speaker wire positive + to channel RL and Sub speaker wire negative - to channel RR.
ii) Sub speaker wire positive + to channel FL and Sub speaker wire negative - to channel FR.

~ Bass boost, meant to be on for a channel if using sub, otherwise off.
~ X-over mode adjust hi/lo frequencies, only work if both x-over switches are on! Then adjust switch frequency knob, until it sounds right.
~ Gain (Volume knob) adjust volume knob up or down, until it sounds right!

You will need patience! many hand tools and parts such as: Wiring kit, fuse holder 20a/30a, Phono leads, speaker cable, Fork/ring connectors, wire strippers, wire cutters, set of screw drivers, also ueful to have zip ties to tdy excess cable and 'P' cable clips to tidy speaker wire to shelf, etc.


Any more questions just email me

Dec 01, 2009 | Car Amplifiers

1 Answer

Amp often decides to not work.


Apr 14, 2009 | Sony Xplod XM-1652Z Car Audio Amplifier

1 Answer

Amp powers on but sub does not come on

I would double-check your RCA's on the amplifier. You should hear a thud if you unplug them. If not they are either not hooked up or defective.

Feb 07, 2009 | Sony XM-2150GSX Car Audio Amplifier

2 Answers

Alpine subs not hitting hard

could it be as simple as bass boost??? maybe you have the subs hooked up wrong... have to have the ohms right.....hopefully this helped

Jan 26, 2009 | Pioneer GM-X962 Car Audio Amplifier

1 Answer

Best way to set up my car sound system???

This is a multi-tiered question. First of all, you're going to want to run the subs at a 2ohm load (if the amp is capable) to get the maximum power from it. Use the 5.0.1 for the subs only, that's what it's designed for. Run the cap in conjunction with only the sub amp as it has the largest power requirement. You can not link the two amps to increase output as they are first of all different amps and second of all not designed to run that way. Some amps are but they must be identical.
Set the crossover on the sub amp probably no higher than 80Hz (I like it lower than that but that's a personal preference) and turn the sub-sonic filter off.
Now, one of the most important things about a subwoofer is it's encosure. If it's a properly built box designed for your subs specifically then you should be ok. You dont' specify if it's ported or sealed etc. That would be helpful to know as well as it's approximate size (air volume).
The head unit can also have some bearing on how things sound, as I recall the Sony X-Plod units are fairly decent for the price and if set up properly should sound ok.

If you need further assistance please provide a little more info about the sub enclosure etc.

good luck!

Oct 08, 2008 | Car Amplifiers

2 Answers


Have you checked to see if your subs voice coils have shorted. That could cause the amp to heat up, on rare occasions the protection lights don't work. Rare, but possible.

Oct 08, 2008 | SPL Phantom DK2-1000 Car Audio Amplifier

1 Answer

Fusion sub n amp dont work

didi u check ur fuses in the amp..if not there check the fuse under the hood on your power wire.i had the same problem

Jul 27, 2008 | Car Amplifiers

1 Answer

Trying to wire my amp to my subs

no thats not it you are lucky you havent burned it up like that. wire each speaker to its own source positive and negative, you loose power when you bridge an amp and use two speakers, its best to hook up without bridging you will get more volume that way.

Dec 18, 2007 | Infinity Reference 1211a Car Audio...

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