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Work around a too-quiet MacBook Pro audio issue Laptop Macs
I noticed that recently the volume on my MacBook Pro has been seriously reduced, sometimes to the point of being almost inaudible. Where it's really noticeable is when I rent a movie from iTunes, then try to watch by hooking my MBP to my HDTV via mini Display Port to HDMI, and headphone jack to the input on my audio system.

Lately, even with all volume controls turned to max, it's still almost impossible to hear the movie. The answer, according to tips I found via Google, is to run Audio Hijack Pro and hijack iTunes audio. Boy, does this work. Using the gain controls available within Audio Hijack Pro, you can blast the sound with the various volume controls turned almost all the way down. The leading theory is that Apple deliberately reduced the level of audio reaching the speakers to avoid damage when booted into Windows, which apparently drives the speakers much harder.

Anyway, I can watch movies again and finally hear what's going on. The problem now is that, for some reason, setting iTunes to full-screen with Audio Hijack Pro running puts the movie on the MBP's screen, which obviously isn't what I want. The workaround I found is to go to the Displays prefpane and drag the menubar to the HDTV. Kind of annoying to have to do this, but at least it works.
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Work around a too-quiet MacBook Pro audio issue
Authored by: Unsoluble on Oct 01, '09 08:57:06AM

Your MacBook Pro has optical audio output. If you use that instead of a standard "headphone" minijack, then you can boost the volume on your audio amp without sacrificing any quality. Ramping up the gain before you send out the signal is not going to do pretty things to the sound.



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Work around a too-quiet MacBook Pro audio issue
Authored by: Unsoluble on Oct 01, '09 08:59:34AM

On re-reading, noticed the bit about "all volumes to the max" already. Really? On your amp, too? There is something terribly wrong with your setup, then, aside from the MBP's volume threshold.



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Work around a too-quiet MacBook Pro audio issue
Authored by: auco on Oct 02, '09 03:19:25AM

if you're watching via iTunes, you can also increase the volume by:
- temporarily disabling the Sound Enhancement ("Klangverbesserung") and the equalisation of sounds ("Lautstärke anpassen")
- opening the EQ and boosting the volume there with the pre-amp

Though this is just a quick fix for Movies being encoded too silent (which I experience very often).

I think there already has been a tip about the pre-amp EQ setting...



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Work around a too-quiet MacBook Pro audio issue
Authored by: macnixer on Oct 02, '09 07:28:16AM

Have you tried using Front Row to play your movies? I am not sure why the movies have almost inaudible audio. I pipe my audio out to a home-theatre system and the video out to the HDMI using a DVI to HDMI jack (i have the older gen MBP). I get pretty good audio and great video quality.



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Work around a too-quiet MacBook Pro audio issue
Authored by: mrarlen on Oct 26, '09 04:10:27PM

We really want to be able to increase the default volume level for the internal speakers, not audio output.

How can we do that? Is there a hidden setting of terminal comand?



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