My right speaker sounds like blown only at the startup sound

Question

My right speaker sounds like blown only at the startup sound

I was recently cleaning up my macbook pro 15inch Intel Core 2 duo 2,4 Model macbookPro 5,1 and used onyx. After onyx finished its work it restarted the macbook and the right speaker sounded like blown. I played some music but the speaker was playing clear. I formatted the macbook and installed the same OS x but still the blown sound on startup remained. I upgraded to mountain lion but still the speakers sounds like blown only when computer starts up. I have cleanded the PRAM, PMU, fixed disk permissions but still is not going away. I am pretty sure is a problem of the software or something that onyx did to the system but have no idea what it is. anyone has an idea or something?

Thank you all for taking the time to read this.

MacBook Pro, OS X Mountain Lion (10.8.2), 2.4 Intel Core 2 Duo MacBookPro5,1

Posted on Mar 8, 2013 4:22 PM

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Answer 1

OGELTHORPE

Level 9

57,305 points

Mar 8, 2013 4:37 PM in response to detlefpersonal

This may explain the phenomenon you are experiencing:

http://support.apple.com/kb/TS3336

If you are still concerned, make an appointment at an Apple store genius bar and have it inspected.

Ciao.

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Answer 2

Mar 8, 2013 4:41 PM in response to OGELTHORPE

Thanks for the answer but this is not permanent. I have the problem only on startup (boot) sound. When the macbook gets in the OS X the speakers works great.

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Answer 3

OGELTHORPE

Level 9

57,305 points

Mar 8, 2013 4:46 PM in response to detlefpersonal

On startup the MBP will produce the 'boing' sound which is part of the startup test sequence which is normal. Is this what you are hearing? If you are really concerned, you may have it evaluated for free ay an Apple store genius bar.

Ciao.

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Answer 4

Mar 8, 2013 4:56 PM in response to OGELTHORPE

Yes this boing sound sounds distorted. distorted like my right speaker is blown. But when the MBP gets into the operating system the speaker play with no distortion at all and really clean. I know myself about the genius bar but I am trying to find out if there is someone else that may already experienced this phenomenon and might have a fix for it or a solution.

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