Question about Alpine PDX-4.100 Car Audio Amplifier

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My speakers crackle then it shuts off do you know why?

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

Posted on Feb 01, 2010

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Posted on Jan 02, 2017

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1 Answer

Left speaker not working, system crackles if left side is active, alright when left side shut down.


Get a meter and check the resistance on the speaker. Looks like a speaker may be blown but with the description of the crackle noise from the slide controls you might have a bad pot in the unit or the pot has come loose from the board. This could explain why the speaker blew out

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When I turn off My 2005 equinox the radio shuts off but the speakers keep crackling and the power steering isn't locking?


Take the key out and turn steering as now the power steering will lock. The speakers crackle when the volume on radio are very high when you turned off engine and removed key. Try turning radio off first the turn off engine and it should not be a problem.

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possible reasons:

Impedance mismatch
wiring is grounding out on frame/metal
speaker isn't OEM and is slightly "pinched" thus causing cone distortion

One of these three will be your issue.

Also, you may remove the speaker and leave it hanging with the wires attached. Knowing that no wiring is shorted and nothing is disturbing the cone, try running your stereo. Same crackling problem? It may be an impedance issue or you reversed the polarity on your speaker.

It will require some work but the solution is there if it was working before.

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1 Answer

I have a powered sub for my surround sound and every now and then its starts crackling and popping. i can make it stop by playing with the volume knob or even tapping it sometimes. my old sub did the same...


Does the crackling and popping sound comes only from the sub, or from the other speakers too? Try switching of to check. I think that it is problem on volume control potentiometer. In that case all the speakers must sound crackling and popping. If the problem is only in the sub you have to check its connections.


Stelios.

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1 Answer

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If the sound FLUCTUATES up & down, try turning off the AutoVolume in the sound menu. You didn't say if it's one or all speakers crackling. Crackling is either a speaker or circuitry issue. Adjust the balance away from the speaker that crackles, if it stops, that speaker is probably "fried". If it still crackles, I'd turn off the speakers and run the sound thru a stereo for the quick, cheap fix. My Samsung (10+ years old to be fair) crackles due to a circuit issue but if I SMACK the left side speaker (behind which is the sound board and side panel connectors) it stops for a while. Maddening. I think I broke it squeezing it into the furniture it's in, pressing on the protruding RCA plugs. Dumb design.

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Let me know what the Type Numeric Number and Model Number on the bottom of the laptop is. I can look on IBM website and see where the hard drive is in located to the speaker. It has happen on some HP and Toshiba I know from experience where the hard drive causes the speakers to crackle. Not sure why, maybe not enough shielding. The type has 4 Numeric Characters and the Model has 3 Alpha/Numeric Characters.

Let me know

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1 Answer

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if you so a test on your speakers you will find the one speaker is doing the same you must take the unit back because the speaker is faltie

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Check the connections to the speaker and the receiver. Had a loose connection once that did the same thing.

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