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volume fluctuation on macbook air

I have just purchased a new 2013 13" MacBook Air, and the volume seems to fluctuate by itself when I play back any videos. Does anybody know what causes this? Is there a fault with my Mac?

MacBook Air (13-inch Mid 2013), OS X Mountain Lion (10.8)

Posted on Jun 21, 2013 10:22 PM

Reply
248 replies

Oct 21, 2013 9:40 AM in response to Dr. Daniel, M.D.

Absolutely incorrect.


It has everything to do with "high end". Or in this case meaning "high end LARGE external speakers".


You can "test" any speaker with "ULF BASS sound files", however if a laptop speaker designed parameter falls outside the range of the intent, desisgn, and specifications...., then the outcome is normal.


You cannot put a 500 pound person on a ladder rated for "250 pounds max" and declare a 'failure'. Test it for same, yes.


Low Frequency Range Test (10-200 Hz)


"Because of their increased wavelength (nearly 20 meters at 20 Hz), high output at low frequencies usually requires large drivers (subwoofers)"



Peace 😊

Oct 21, 2013 10:06 AM in response to PlotinusVeritas

PlotinusVeritas wrote:


Absolutely incorrect.


It has everything to do with "high end". Or in this case meaning "high end LARGE external speakers".


You can "test" any speaker with "ULF BASS sound files", however if a laptop speaker designed parameter falls outside the range of the intent, desisgn, and specifications...., then the outcome is normal.


Then the outcome is as expected or referenced — not normal — and the test was successful. You seem not to grasp the concept of testing.


You cannot put a 500 pound person on a ladder rated for "250 pounds max" and declare a 'failure'. Test it for same, yes.

You will most likely declare a failure of the ladder, possible an ankle or a wrist, too. The test would then confirm what the specifications told you. Not sure what "Test it for same, yes" is supposed to mean.


Low Frequency Range Test (10-200 Hz)


"Because of their increased wavelength (nearly 20 meters at 20 Hz), high output at low frequencies usually requires large drivers (subwoofers)"

Clueless to what point you're trying to make here.

Feb 6, 2015 3:04 AM in response to sumner89

I am experiencing the same problem playing music back through my brand new MacBook Pro.. Volume plays normal and then fluctuates by about a third before creeping up and then dropping again... seems to been after installing flash for mac (which I have since deleted) - I thought it was a serato issue but the same thing happens via iTunes - this is causing me serious problems as a professional DJ on Radio and in clubs.. never has problems with any Macbook until now and it could cost me dearly...

volume fluctuation on macbook air

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