Car radio issue (speaker vibration)

If I can tomorrow, I will record the sound with bass for you to listen to. I doubt it will provide any analytical insight, Perrus, but you can do it; I will listen.

The membrane is made of some kind of plastic, so it’s tear-proof. Tear-proof is not French, Perrus ;-) The membrane is glued to the bowl (that's the name of the metal support), it can come unstuck. The core (winding) slides in a very tight magnetic space; if it’s off-center, it can vibrate too (but it would be at higher frequencies).

Which screw is loosening? Any of them; in a speaker, all the screws must be tightly secured (not overly tight, mind you!) no washer should have any play.

And what is the trim? It’s usually the protection grill; it’s a major source of vibrations if it's poorly fixed.

I press pretty hard on the membrane, and that goes away. Normal and not significant. By pressing firmly on the membrane, you reduce the intensity of the source, thus diminishing the vibrations. Moreover, it is not recommended to press hard on a membrane; you risk misaligning it, and that is irreparable.

Sorry, this is not my field at all. Well, it is! If this vibration bothers you that much, it’s your field, and you will find the source of the problem, I’m sure! Many don’t hear these stray noises; if this noise annoys you, it’s your field, and you don’t need to be an acoustician to trace its origin.

If it really vibrates with the bass, your ear should guide you to the troublesome source without too much trouble.

Get to work, Perrus; start by removing the speaker from its enclosure to be sure it’s not vibrating itself. If it is, there’s only one solution: replace it. Otherwise, you need to find what’s loose.

And then... I use technical terms in my response not to "show off" but to use the precise words, the only ones comprehensible. I’ve suffered professionally from vibrations enough to know how annoying they can be for those who hear them.

With age, my hearing becomes more tolerant. ;-)

@ tomorrow!

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kormo

For your information, the membrane is made of a kind of plastic, so it's tear-proof.
Which screw is coming loose?
And what is the trim piece (sorry, this isn’t really my field)?
And when I play low frequencies and push down hard on the membrane, it goes away.
If I can tomorrow, I’ll record the sound with low frequencies for you to listen to.
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Google is your friend, go have a look before anything else!!!
Hello, thank you, goodbye, these are our only rewards here, don't forget that!!!

Good evening.

Do you know how to solve the problem? Yes, I would know if I had the problem right in front of me, not through the internet. Miracles have their limits!

The vibration of a speaker can come from a lot of things ranging from a worn-out driver (membrane tearing) to a loose screw, to a trim piece coming off, or more often, to magnetic debris stuck to the membrane.

There's only one thing to do in such cases: play a piece rich in bass and press on every component that might "vibrate" and check.

Also, be wary of "unforeseen" elements like a dog shaking its head in the back seat; the localization angle in low frequencies is very broad and not conducive to foolproof analysis.

you can hear the membrane as soon as there's a bit of bass => Do you think it's the driver? In that case, the speakers weren't in good condition, and all that's left is to replace the driver if it's indeed the cause.

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kormo

I'm going to check to see where that noise is coming from in the speaker => Yes, no one better than you can determine the source of that interference, you need to be "in-situ" to find the cause.

because it is very annoying, expert or not => Completely agree, you don't need to be an "expert" (which I'm not) to be annoyed by these background noises.

Just keep us updated on the situation, Perrus, please.

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kormo

Great Perrus and thank you for your thank you. ;-)
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kormo

The thing is that the speaker doesn't have a cover, but I'll check to see if anything is loose.
For the noise, it's clear that it's a plastic noise (speaker disassembled), so since I can't see the inside (tweeters in the middle), I need to try to take it apart, even if it breaks, because it's very annoying, expert or not :-D
So it's possible that something is loose, given that it was in a garage (humidity)
I'll check to see where this noise is coming from in the speaker
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Google is your friend, make sure to check it out first!!!
Hello, thank you, goodbye, those are our only rewards here, don't forget it!!!

Well, just so you know, I succeeded, no more crackling, thanks everyone.
I blew some air into the back, and a little pebble came out!!
Thank you, Kormo!!
--
Google is your friend, go take a look before anything else!!!
Hello, thank you, goodbye, these are our only rewards here, don’t forget that!!!

You're welcome for the thank you!!! lol
--
Google is your friend, take a look before anything else!!!
Hello, thank you, goodbye, these are our only rewards here, don't forget it!!!

Do you know how to take apart a speaker?
I'll take a look tomorrow, but I'm afraid of breaking it since it still works (despite the noises)
--
Google is your friend, make sure to check it out first!!!
Hello, thank you, goodbye, these are our only rewards here, don't forget it!!!

Could you tell me how to disassemble a speaker? No Perrus, not without seeing it. You'll likely find some screws somewhere, maybe under the front grille which might just be clipped onto the body.

Manufacturers are skilled at hiding the fasteners!

Don't break everything, take your time!
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kormo