Question about Alpine PDX-1.600 Car Audio Amplifier

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

I have a pdx 1.600 am.. actually i have two but the other is working fine. but the one that isn't working has red light instead of a blue light on the right side of the removable panel. what does that mean? how can i fix it?

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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

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Posted on Jan 02, 2017

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zzedly
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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

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