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Audio [Guide][ROOT] Raise the volume limit on Xperia M

OP ov1d1u

29th November 2013, 12:19 AM   |  #1  
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Maybe you noticed that the sound volume on Xperia M isn't too satisfactory. Maybe, like me, you tried to raise the volume with AlsaMixer, but the issue is that the settings are temporary and you have to set the volumes everytime you want to listen some music...

So there's how you raise the volume on this phone. I tested only on the dual-SIM version, please confirm if this is working on single-SIM version, too.

1. Make sure your phone is rooted and you have a capable root file explorer (I used FX File explorer with the root plugin).
2. Navigate to /etc/snd_soc_msm and make sure that the /system partition is mounted as r/w.
3. Open snd_soc_msm_Sitar in a text editor (FX File Manager has one embeded)
4. Search for "Headphones" (including quotes). You should find something like in this image:

5. Edit the 'HPHL Volume' and 'HPHR Volume' values, from the "EnableSequence" section. For a 100% volume you shoud have something like
'HPHL Volume':1:100
'HPHR Volume':1:100
6. Save the file and reboot.

Warning: at 100% the sound is very loud and I guess you need a good pair of headphones to avoid distorsions. Play whit those values to get an optimal volume for your preferences.

This tutorial is provided as it is, I don't assume any responsability if you brick your phone during this process.
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29th November 2013, 06:38 PM   |  #2  
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So is this only for headphones volume or does it also improve volume of loudspeaker?
29th November 2013, 06:43 PM   |  #3  
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The "Headphones" section changes - obviously - only the volume in headphones. For changing the volume of loudspeaker I guess that you have to change the values on "Speaker", but on my phone those are already set to 100% (but, as I said, I'm not sure that "Speaker" is the right device for this).
4th December 2013, 06:58 AM   |  #4  
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The volume for this phone is already one of the best. and headphones too r loud. Not the best but definitely loud. Still good knowledge

Sent from my C2004 using Tapatalk
4th December 2013, 09:06 AM   |  #5  
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It says that an error occurred while trying to save. I think I did not change the permissions an I dnt know to change it either. Please help

Sent from my C1904
7th December 2013, 04:36 PM   |  #6  
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Please make sure that the /system partition is mounted as r/w (read/write) when you're trying to save the file.
8th December 2013, 03:19 PM   |  #7  
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I shluld chnge the permossion of the entire system folder? The folder aldeady shows permission as rwx r-x r-x. I tried changng it to rwx rwx rwx but it says cant change or some error or something.

Sent from Xperia M C1904
9th January 2014, 02:14 PM   |  #8  
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Thanks for the great guide mate!

Works great on xperia M single sim with latest offical firmware update

Got any ide if you can change the bass curve on the sound?

9th January 2014, 02:23 PM   |  #9  
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You could install Viper4Android FX which comes with a system-wide equalizer. This way you can change the sound parameters even if your favourite music player doesn't come with an equalizer.
13th January 2014, 06:36 AM   |  #10  
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The in call volume is too loud on the minimum level :s
No more quiet conversations. :/
Does dual have similar thingy?

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