Forum

Raspberry Pi Audio Circuit very low volume  

  RSS

slit
 slit
New Member
Joined: 5 days  ago
Posts: 2
May 13, 2017 12:50 pm  

Hi,

First of all thanks for your tutorial "Raspberry Pi Zero Audio Circuit".
I tried it out but the volume is very very low (as if it's produced by headphones).  Here's my build:

 

I used a Raspberry Pi 2 B to test, but I will swap it later with a Zero.

Amixer and alsamixer are both on 100%. When I connect the input straight to the amplifier (without the filter), it's a bit louder and ofcourse a lot of noise but still not very loud. It's as if the amplifier is not amplifying the sound, but it's still processing the input...

Am I missing something? The speaker is 3W btw.

Thanks!


ReplyQuote
slit
 slit
New Member
Joined: 5 days  ago
Posts: 2
May 13, 2017 4:10 pm  

I added the second speaker, and everything works fine now. Is it normal behaviour that both speakers should be connected?

Thanks


ReplyQuote
othermod
Estimable Member
Joined: 8 months  ago
Posts: 172
May 13, 2017 10:57 pm  

The channels operate independently of each other, so that's weird that it only worked with both speakers attached.


ReplyQuote
  
Working

Please Login or Register