RasPlex Dual Audio Version 0.7 and above

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1

I thought it micht be worth posting this info for people interested in setting up Dual Audio in Rasplex.

This allows you to configure one output for video audio via an HDMI connected A/V Receiver or TV and another output for music audio via the analogue output port of the RPi (or HiFiBerry output port) connected to a stereo amplifier with no HDMI input or headphones (normal or bluetooth).

Note: Bluetooth headphones can be connected using a bluetooth transmitter connected to the analogue output port of the RPi similar to this one:_

  • Set ‘Audio ouput’ to ‘HDMI’, this is what is used for video audio output and will output AC3 or E-AC3, or AAC5.1 or DTS to a capable receiver when ‘Dolby Digital (AC3) capable receiver’ or ‘Dolby Digital Plus (E-AC3) capable receiver’ or ‘DTS capable receiver’ are checked and ‘Audio output channels’ is set to 5.1. (If you only output to a TV directly then it may not output at all or only output limited number of channels if any are checked and ‘Audio output channels’ are set to 5.1, for HDMI connection direct to TV’s ‘Audio output channels’ must be set to 2.0.)
  • Set ‘Audio output device’ to ‘Analogue’, this output is for music audio output only, you cannot change ‘Passthrough output device’. (If you have a HiFiBerry card attached and configured you can also select it in this setting)
  • Connect your stereo amplifier or headphones (or bluetooth transmitter) to the analogue port on the Pi (or HiFiBerry card), select any music track and press play - sound is output to the stereo amplifier or headphones, no sound is output to any HDMI connected device.
  • Stop the music playback and select any video media, press play - sound is output to your HDMI connected device (receiver or TV).

I am listening to a Plex Music Mix on my bluetooth headphones whilst typing this!

Regards

2

Thanks for this howto!

Do you know if Rasplex 0.7.0 works with an USB DAC?

Regards,
igno2k

3

Unfortunatly we don’t have any USB DAC’s, HiFiBerry DAC’s are first class if you are looking for a DAC and are reasonably priced.

Regards

4

So I was reading this forum and had spare a USB DAC lying around, so I decided to try using the DAC and it works great! I am not very technical, so I don’t know how many questions I could answer, but I thought I would let you guys know. I am running Rasplex 0.7.1 on a Raspberry Pi 2 and I am using a Presonous AudioBox USB as my USB DAC. The Rasplex + USB DAC are hooked up directly into the analogue inputs on my old stereo system.

My System->Audio Output settings

Audio Output = hdmi
Audio offset = 0ms
-Dolby Digital (ac3) = not checked
-Dolby Digital Plus(e-ac3) = not checked
-DTS = not checked
Output sound to all speakers = not checked
Boost volume level on down mix = checked
Audio Output channels = 2.0
Audio output device = ALSA: AudioBox, SPIDIF
-> (There was also an option for ALSA: AudioBox, Analogue, but this setting outputted noticeably better audio quality. I don’t know why…)
Passthrough output device = Pi: hdmi
Play GUI sounds = never

Hope this helps.

5

@insaneack213

Thanks for the additional info on USB DACs.

Regards