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[EU] [ROOTED] Low headphone sound Problem Fix

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By rikin93, Senior Member on 29th September 2016, 12:12 PM
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This should fix the sound problem on EU phones. Most manufacturers put a limit due to EU law. It is changeable with root, this was a similar case on Google nexus devices. Here is the fix for the Axon 7!

Ensure you have root.

Go to system-->etc and open the mixer_paths.xml file using an editor such as QuickEdit from the play store.

This below change is for the Standard setting in the headset hifi menu option.
Go to the line under <path name="headphones"> and change <ctl name="HP Out Volume" value="14" /> to a value you prefer. Do not go higher than 20.

This below change is for the Super setting in the headset hifi menu option.
Go to the lines under <path name="headphones-hi-fi"> and change <ctl name="AK4490 Lch Digital Volume" value="240" /> <ctl name="AK4490 Rch Digital Volume" value="240" /> to a value you prefer. Do not go higher than 255.

This below change is for Dolby setting.
Go to the line under <path name="headphones-dolby"> and change <ctl name="HP Out Volume" value="14" /> Do not go higher than 20.

Save and restart phone.

Check if that helps make your audio sound louder. Let me know!
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29th September 2016, 12:17 PM |#2  
keessonnema's Avatar
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I will wait for an official fix instead of hacking in mixer_paths (which I did with my op2 too tbh, but that's a diff story)
29th September 2016, 12:55 PM |#3  
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Haha its changing one line :P
29th September 2016, 12:59 PM |#4  
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Quote:
Originally Posted by rikin93

Haha its changing one line :P

I did change my recording gain too on op2. If you want to know how, let me know
Also, do you know when ZTE releases the bootloader unlock thing?
29th September 2016, 01:01 PM |#5  
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Just post it here and ill check it out.

I highly doubt ZTE will release an EU audio patch because like i said before it is an EU law to have it limited.
29th September 2016, 01:22 PM |#6  
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On B27 A2017U value is 19. Don't know if it helps.
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29th September 2016, 01:27 PM |#7  
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Quote:
Originally Posted by rikin93

Just post it here and ill check it out.

I highly doubt ZTE will release an EU audio patch because like i said before it is an EU law to have it limited.

This is specifically for the OnePlus 2, but you can try different values for it to work.
https://github.com/keessonnema/andro...c6590d166f2892

(And with my last question I mean the bootloader OTA, not the audio fixes)

---------- Post added at 12:27 PM ---------- Previous post was at 12:26 PM ----------

Quote:
Originally Posted by sipe1

On B27 A2017U value is 19. Don't know if it helps.

Makes perfect sense.
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29th September 2016, 01:49 PM |#8  
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Quote:
Originally Posted by sipe1

On B27 A2017U value is 19. Don't know if it helps.

@sipe1 That helps a lot, this proves my case that the audio has been turned down. If you could PM me the whole file so i can do a comparison that would be a great help!
29th September 2016, 01:55 PM |#9  
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does anybody know when B27 will be available for europe? Now i have B03 and the loudness is crap.
29th September 2016, 02:00 PM |#10  
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Quote:
Originally Posted by martinmagnus

does anybody know when B27 will be available for europe? Now i have B03 and the loudness is crap.

It won't get louder. It's EU law.
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29th September 2016, 02:06 PM |#11  
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ok thanks.. so it makes no sense to wait for the update.
.....i am so frustrated with the a 7. i will send it back
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