Increase calls audio with mixer_paths.xml - Android Q&A, Help & Troubleshooting

Hi. On my Galaxy Note 3 with official Lineage 14.1 I have incredibly low audio during calls on speaker earphone. I solved increasing value in mixer_paths.xml in "Voice Call Scenario" section.
The same problem is on my Galaxy Note 10.1 2014 (tablet) with lineage 14.1
It is a tablet, so we can hear calls only with speaker. I tried modifying the same file, but didn't work. I'll attach here the mixer_paths.xml of my tablet. Can somebody tell me how can modify it to have an higher volume during calls?

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