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Old 07-28-2014, 10:44 AM   #1
CarOwner

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The small speaker loudly vibrates

Hello!

I installed a new set of speakers in my car (Pioneer TS-A131Ci) and when I tried to feed some quality music into them, I was very unpleasantly surprised.
When the volume is set to a bit higher than "can talk over the playing car stereo with people in the car" the small speaker starts to loudly vibrate its membrane. The big speaker works flawlessly.

No, I know the speakers are supposed to vibrate I am not that dumb! By membrane I mean a piece of plastic dome that covers the small speaker.

It's a bit hard to explain so here's video instead:
https://www.youtube.com/watch?v=Tle852AodUk

Please notice, how the that covering plastic dome is vibrating, which I don't think it's supposed to, and it creates very loud and annoying crackling.

What could be causing this? I have no idea how to fix it.

Thanks for any advice.
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Old 07-28-2014, 12:21 PM   #2
basicxj

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What are you using to power the speaker set? Are you using the supplied inline crossovers that came with the tweeter wires?
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Old 07-28-2014, 02:01 PM   #3
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In the video it almost looks like it is shorting under the tweeter membrane...do you see a faint blue light/spark that corresponds with the crackling noise in a dark environment?
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Old 07-28-2014, 04:47 PM   #4
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Quote:
Originally Posted by basicxj View Post
In the video it almost looks like it is shorting under the tweeter membrane...do you see a faint blue light/spark that corresponds with the crackling noise in a dark environment?
It only looks that way, but it's only the bent membrane which makes it look like that.

Quote:
Originally Posted by basicxj View Post
What are you using to power the speaker set? Are you using the supplied inline crossovers that came with the tweeter wires?
A what? There was no such thing in the package, the bigger speakers came without any wires and the tweeters came with a wire already soldered in.
So i took the sound wires from the car and soldered them onto the big speaker and then i took the tweeter wires (already attached to the tweeter on one end) and soldered them onto the big speaker's contacts also. I also watched out to make sure the + a - contacts are in order.

The only other thing in the package was a pack of longer wires, which i assume are to be used when you don't have any wires from the car stereo provided in the car, which i have, so i didn't unpacked or used those.
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Old 07-28-2014, 05:09 PM   #5
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Oh god damn it, i just went and checked and unwrapped those long cables and they both have a bulge in the middle that looks like a capacitator. Now i have to take the entire car apart again. I hate myself.
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Old 07-29-2014, 01:56 AM   #6
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Quote:
Originally Posted by CarOwner View Post
Oh god damn it, i just went and checked and unwrapped those long cables and they both have a bulge in the middle that looks like a capacitator. Now i have to take the entire car apart again. I hate myself.
Yes, those would likely be a primitive inline crossover designed to cut lower frequencies from the tweeters. Hopefully the tweeters will survive.
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Old 07-29-2014, 04:31 PM   #7
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It worked! The sound is now crystal clear without any cracking even at ear drum bursting volumes. The windows shake a lot though.
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