20 Most Recent Alpine PDX-4.100 Car Audio Amplifier Questions & Answers


Set the two switches filter to: off. You do no need filtering your speakers as they are full range ones.

Alpine PDX-4.100... | Answered on Aug 19, 2011


Check your ground wire first, #1 issue i've seen over and over... attached to bare metal with a bolt to tighten it down. do not use a seatbelt bolt... as this could cause a safety concern. next, try eliminating one channel at a time to locate a bad cable or even a bad speaker...good luck.

Alpine PDX-4.100... | Answered on Mar 05, 2011


probably.
almost sounds like your speakers are worn out, and when you turn the volume up, they clip n no sound comes out.

Alpine PDX-4.100... | Answered on Jul 31, 2010


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

Alpine PDX-4.100... | Answered on Mar 25, 2010


sounds like one of the speakers is blown putting too much of a load on the amp

Alpine PDX-4.100... | Answered on Feb 01, 2010


Make sure your speaker wiring does not come close to the 12v power cable running for your amplifier. If your amplifier's 12v power cable runs on the drivers side of the vehicle, run your speaker cables on the passengers side and make sure your tweeters have a high pass filter to stop any pickup of engine sound (When you are driving you *WILL* notice it at high RPM. a HPF (High Pass Filter) will also stop those nasty hissing sounds on S's.

Alpine PDX-4.100... | Answered on Aug 25, 2009


Try isolating the rca cords away from the power cords-sometimes they pickup and transmit engine noise through the amps if they are too close together

Alpine PDX-4.100... | Answered on May 27, 2009


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.

Alpine PDX-4.100... | Answered on Sep 28, 2008


use channel 1 and 2 as normal, use the positive from channel 3 and the negative for channel 4 as mono 1ch, your bridged output on the mono chan should be around 200watts at 4ohms.

Alpine PDX-4.100... | Answered on Nov 25, 2007


If you set the gain too high on the AMP, at loud volume levels some clipping or distortion of the output signal will occur. Most amps have a Circuit inside that detects this clipping or distortion and applies protection to prevent damage to the speakers and the amp. It would help to know if you are driving the speakers with a Line level output or using the speaker output from your deck. There are many things that can cause an amp to go into protect mode, and knowing a little more about your setup will help to solve the problem.

Alpine PDX-4.100... | Answered on Nov 13, 2007


If you've only had it for 3 weeks and it's under warranty, you need to send it to a warranty station.
If there is no warranty and you want to try to find/repair the problem yourself, let me know.

Alpine PDX-4.100... | Answered on Oct 25, 2007


Amplifier power problems are generally pretty easy to troubleshoot as long as you have access to a digital multimeter. You need to check the DC volts on the power terminal and on the remote terminal. For the amplifier to turn on, each terminal needs to show around 12 volts. From the sound of it, I suspect a problem with your main power wire, but the multimeter will make certain. If you show voltage on both terminals (with the black probe on the ground terminal) and the amp still doesn't turn on, then there's a defect in the amplifier.

Alpine PDX-4.100... | Answered on Jun 25, 2007


What is the code of bontec alpine a06012 car stereo

Alpine Car Audio... | Answered on Nov 03, 2020


Frankie. I am having the same problem. Did you find an answer or do I need to get a new power pack or control unit?

Alpine Car Audio... | Answered on Aug 15, 2020


I can't find the power wires on my Alpine CDA 7894
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Alpine Car Audio... | Answered on Apr 17, 2020

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