Question about Alpine PDX-M12 Car Amp

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Alpine pdx-m12 blue light fiashing - Alpine PDX-M12 Car Amp

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If the blue light is flashing it means the output mosfets are taking more than what the power supply can deliver. Probably just one of the MOSFETs is bad. Take off the heavy aluminum bar that is the heatsink for the 8 MOSFETs. Turn it on for about 10 seconds. (And see that the blue light is flashing.) Find the (hopefully) one MOSFET that is hot. Replace it. And you're good.

Posted on Oct 06, 2015

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Posted on Jan 02, 2017

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etirbynnor
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SOURCE: red light on PDX 1.600 alpine amp... no sound

Hello zim69zim69zi,

Solid red indicates 4 possible conditions: 1) Short circuit, 2) Current too high, 3) Voltage too high, or 4) Overheated. The most common faults are the short and overheated.

If the fault is intermittent, the amp is probably overheating. If it is a constant fault, anytime the amp is powered up, then I'd recommend that you first check all of the wiring. If the wiring is OK, then you have a voltage or current problem. If it's voltage, the vehicle electrical system is probably causing it. You can check that with a meter. It should be from about 12VDC with the engine off, to about 15VDC with the engine running (alternator putting out). The amp should be able to operate OK up to about 16VDC but as components age, their values change. I'd look for a minimum of 10.8VDC and a maximum of 14.8VDC.

If the problem is overcurrent, the amp itself probably has a defective component causing it to draw too much current. It needs professional repair.

Hope this helps.

Posted on May 16, 2009

zzedly
  • 300 Answers

SOURCE: PDX 4.100 In Protect Mode..

According to the manual, the issue could be:

  • Internal issue with the amp circuitry.
  • A short on the speaker output(s).
  • Power source voltage is too high (aka above 14.5V).
  • Overheating.
The easiest thing to do is to try removing the connections to the speakers at the amp and see if the issue disappears after each set has been disconnected. Keep removing wires until both LEDs stay blue.

Posted on Mar 19, 2008

  • 9 Answers

SOURCE: Alpine PDX-1.1000 to a 10 "Alpine SWX-1043D

straight up. Since it has the power saving technology where it gives out the same power at 2 ohm and 4 ohm loads then u dont have to bridge it and since its a single speaker you dont have to bridge it and since it is a mono block oyu dont have to bridge it. just wire + to + and - to -.

Posted on Jun 02, 2009

rteemon
  • 578 Answers

SOURCE: Alpine PDX 1.1000 low power output - sub not loud

system not configurate properly go to a pro and let them do for you you have good equipment just need to put together rite.for wht you have you can get better sound than that,,good luck

Posted on Jun 26, 2009

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2 Answers

Blue light on but not output


It has power but it may not have any input and without a good look myself i wouldnt know offhand as to where to tell you were to look sorry

Nov 22, 2011 | Alpine PDX-1.600 Car Audio Amplifier

1 Answer

I just install my new setup ,i have 1 pdx f4 ,1 pdx m12 and 2 sub 10''type r and my pproblems is when i put a song the pdx f4 lights become red and my mid and tweeter cut ...


Disconnect all speaker leads from the PDXf4 - test. If the amp turns on and says on ok - then turn off, and attach one speaker lead at a time until it turns off. When it does check that speaker and the speaker wire to see if it is blown, shorted out etc.

Feb 06, 2011 | Alpine PDX-F4 Car Amp

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Alpine amp not working.


possably, did you get it professionally fitted? they have lifetime warranty on install,

Apr 22, 2010 | Alpine PDX-1.1000 1000W x 1 Car Amplifier...

1 Answer

How do you bridge an Alpine PDX amp


you have 2 + and 2- right? twine both speaker wires together. like + to + and - to - and then pick only 1+ and 1- to hook up and then you should double the power to the speakers only

Mar 20, 2010 | Alpine PDX-4.100 Car Audio Amplifier

1 Answer

I have a Alpine PDX 1.600 that has been professionally installed running a single type R 12" sub. The wiring is capable of wiring a 1400 watt amp, and mine is only half of this. When i turn the music up to...


ur speakers are probably connected wrong so diconected and and connected differently. and if ur speakers a dual coil see if they connected it if not do this. only if ur speaker is double coil meanin if ur speaker has 4 connections for speaker wire. and if it does than connect possitve to negative from one coil to another and negative to positive from the other one than from one of the coils connect the wires going to ur amp positiv to positiv and negative to negative bringind the sub to 2ohm constant
try that see if it works. only if u have a double coil subs

Jul 09, 2009 | Alpine PDX-1.600 Car Audio Amplifier

1 Answer

Red light on PDX 1.600 alpine amp... no sound


Hello zim69zim69zi,

Solid red indicates 4 possible conditions: 1) Short circuit, 2) Current too high, 3) Voltage too high, or 4) Overheated. The most common faults are the short and overheated.

If the fault is intermittent, the amp is probably overheating. If it is a constant fault, anytime the amp is powered up, then I'd recommend that you first check all of the wiring. If the wiring is OK, then you have a voltage or current problem. If it's voltage, the vehicle electrical system is probably causing it. You can check that with a meter. It should be from about 12VDC with the engine off, to about 15VDC with the engine running (alternator putting out). The amp should be able to operate OK up to about 16VDC but as components age, their values change. I'd look for a minimum of 10.8VDC and a maximum of 14.8VDC.

If the problem is overcurrent, the amp itself probably has a defective component causing it to draw too much current. It needs professional repair.

Hope this helps.

May 16, 2009 | Alpine PDX-1.600 Car Audio Amplifier

1 Answer

Alpine pdx 1.600keeps cutting out


you need more batt, more amps, try new batt, capacitors are paperweights, spend on good batt.

May 14, 2009 | Alpine PDX-1.600 Car Audio Amplifier

1 Answer

Alpine PDX 1.1000 low power output - sub not loud


system not configurate properly go to a pro and let them do for you you have good equipment just need to put together rite.for wht you have you can get better sound than that,,good luck

Mar 30, 2009 | Alpine PDX-1.1000 1000W x 1 Car Amplifier...

1 Answer

ALPINE PDX 1.1000


well you would have to look into the ohms of the amp compared to the ohms of the speaker. If the ohms are different you would have to hook them up in a different way. check the RMS on the speaker as well as the amp, this can also be sufficed by wiring it different if ohms match up properly! Hope this helps you out and if this is not the case let me know.

Feb 28, 2009 | Alpine PDX-1.1000 1000W x 1 Car Amplifier...

2 Answers

PDX 4.100 In Protect Mode..


According to the manual, the issue could be:
  • Internal issue with the amp circuitry.
  • A short on the speaker output(s).
  • Power source voltage is too high (aka above 14.5V).
  • Overheating.
The easiest thing to do is to try removing the connections to the speakers at the amp and see if the issue disappears after each set has been disconnected. Keep removing wires until both LEDs stay blue.

Mar 15, 2008 | Alpine PDX-4.100 Car Audio Amplifier

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