Mono output with Justboom Amp Zero

Help and Support Help
1

I am trying to configure mono output on a pi zero with a justboom amp zero. I’ve followed the instructions here - justboom.co/tutorials/confi … amps-mono/

and changed the asound.conf file, but the output through volumio is still in stereo. Is volumio not using this file? It do I need to change the settings somewhere?

I did previously try the volstereo2mono plugin, but that falls over with Spotify for me.

2

You can’t do that so simply. Changing asound is not enough. But what is the problem with spotify and volstereo2mono? Could you be more precise?

3

volstereo2mono worked on first install. However, when I tried to play spotify through volumio using volspotconnect2 the audio stopped completely. I couldn’t get back to mono after that.

4

Ok. I’ll have a look

5

Thank you. If you need more detail, I can try it again this evening.

6

@dccarm,

Hi,
If you want, I prepared a mod version of volspotconnect2 that should work with volstereo2mono.
Just unzip the attached file in /data/plugin/music_services/volspotconnect2. It will overwrite index.js
enable volstereo2mono
disable and enable volspotconnect.
If no sound, reboot.
let me know.

edit : attached file :wink:
index.zip (3.78 KB)

7

YES! That’s done it! Thank you so much for your help, and for the fantastic plugins.

I had a few minor problems getting the file into volumio. For anyone else trying to do the same thing -

The correct path in volumio is /data/plugins/music_service/volspotconnect2

When I tried to unzip the file into the folder from the root folder it refused

[code]2018-03-28 05:18:33 (1.23 MB/s) - ‘index.zip’ saved [97/97]

volumio@amp-zero:/$ miniunzip index.zip -d ./data/plugins/music_service/volspotconnect2
MiniUnz 1.01b, demo of zLib + Unz package written by Gilles Vollant
more info at http://www.winimage.com/zLibDll/unzip.html

Cannot open index.zip or index.zip.zip[/code]

This is probably due to my extremely limited linux knowledge.

So I unzipped it and then copied it into the volspotconnect2 folder where it created an index.js1 file. I just removed the original and renamed this one.

Thank you again - it’s really appreciated.

8

I may have spoken too soon. Now it won’t open the web UI. I can ssh into it.

9

hi,
Something went wrong…
The best is to remove the plugin via ssh :

rm -Rf /data/plugins/music_service/volspotconnect2

After the webUI restarted, install the dev version on volspotconnect2, following instruction here : https://github.com/balbuze/volumio-plugins/tree/master/plugins/music_service/volspotconnect2

10

I tried installing the dev version, but despite it appearing to install properly, the plugin does not appear in the UI. (Same issue logged in github a few days back).

11

OK. I have exactly the same issue. It doesn’t seems to be common to build mono speaker, but I did it. Now, I want to use spotify connect but with mono output. After installation of stereo2mono plugin, there is no sound from Spotify connect 2 (0.9.1 version). But there is from other sources, such as web radio.
I don’t want to use the modified index.js as it is the old version. Meanwhile there were issue with spotify connect plug-in, so the “big” guys have to fix it.

Any idea how to make mono output work alongside spotify connect?

RPi 0 W
Justboom AMP Zero
Volumio 2.565
Spotify connect2 0.9.1