Hi folks
I’m am using SPKR outputs on the analog expansion header on dragonboard. I can get audio coming out but it is at very low level…I checked the usual alsamixer settings and all seems to be at max level.
So, do these outputs need a audio amplifier after the SPRK pins and before the speaker ?
thanks
hi,
can you please provide more details about which release/version you are using?
thanks
No problem. I’m using Arrow Snapdragon
I’m using Debian build 110
Hi,
Can you give me more details about the speaker you have connected, like ohms and the class.
Db410c can drive class D 4 or 8 Ohms speakers.
also can you try this on the command line.
amixer set ‘RX3 Digital’ 100%
This will increase the speaker gain to max.
thanks,
srini
its a small (40mm) 0.25W, 8 Ohm speaker.
Hi,
Speaker specs looks Ok, it should work with no issues with db410c.
Did changing the RX3 volume by below command help you with volume issue?
amixer set ‘RX3 Digital’ 100%
–srini
no that did not make a difference.
I did just add a small audio amp before the speaker … now I can hear audio properly
I do not know if something could be linked to Android, but on Android the volume is at max or OFF. There is no mix possible. Anyone experienced this too?
Hi
i’m tring to use speaker on Dragonboard 410c
“lm80-p0436-43_stereocontaudioroutappnote”
the connect is ok,but i cannot get outputs
the speaker is 8 ohm 2W
should i change it ?
or can you show me how you config?
i’m using the linux on the board
