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Discussion Starter #1

I've just fitted a double din pioneer head unit to my W639 and now the speakers are popping ( sounds like when the bass comes in ) they sound like they have blown but i can't imagine they actually have.
I can't turn it up more than 1/4 volume.
Is there something that an aftermarket stereo will do to my standard speakers that i don't know about or have they actually died by adding the Pioneer.
When the standard stereo was in they were fine.
Thank in advance.
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