I have 2 Sonos ports connected to an amplifier. It looks like the Sonos ports always output some sort of audio line output so the amplifier doesn’t power off. I have seen it off once but it is very rare.
Does anyone know what causes the Port to output voltage on the audio out or more importantly what causes it to turn off the audio output?
examples
App is connected
pause or play
anytime it is powered
I can’t really use the trigger as the amp only allows for 1 trigger and I have 2 ports.
This is not what I’m seeing with the Sonos port, but its line-out in my case is connected to a BT transmitter (to use with headphones). When I manually stop its playing audio source, using the Sonos App for example, or stop it’s line-in audio source, the analog output immediately falls silent and that’s reflected in the Sonos App room/browse tab too. Are you actually stopping the source audio that’s playing on the Port?
Yes I have stopped both ports. I was thinking that perhaps activity in the app might be causing an issue or perhaps it didn’t time out for a long time. Have not figured out what is happening to not have the amp trigger off. Was thinking maybe that is why they have a trigger out of the port.
In one case the port has a line in and in the second case I don’t have a line in but can select the line in from the first port or perhaps select other music. The second port is really used as a volume control for a second zone.
In any case, I am struggling to get the amp to turn off which means it is seeing voltage from one of these two outputs.
Yes I have stopped both ports. I was thinking that perhaps activity in the app might be causing an issue or perhaps it didn’t time out for a long time. Have not figured out what is happening to not have the amp trigger off. Was thinking maybe that is why they have a trigger out of the port.
In one case the port has a line in and in the second case I don’t have a line in but can select the line in from the first port or perhaps select other music. The second port is really used as a volume control for a second zone.
In any case, I am struggling to get the amp to turn off which means it is seeing voltage from one of these two outputs.
I don’t use its 12v trigger, so can’t say, it maybe a setting on your Amp? See this link for info. on a Rotel Amp (just as an example) - maybe it’s a case that your Amp perhaps has a similar setting?…
https://rotel.com/faq/what-purpose-12-volt-trigger-switch
There is an old thread here on the Ports 12v trigger - perhaps see this link too:
I understand the purpose of the trigger. The amp should turn off based on auto sensing the output of the Sonos. Don’t know what triggers the Sonos Port to stop the output voltage.
There is an old thread here on the Ports 12v trigger - perhaps see this link too:
This thread is what made me wonder what triggers the port to stop the audio output voltage.
in the thread it says “When I tested the port, after the music stops playing the 12v trigger turns off exactly 2 minutes later”
There is an old thread here on the Ports 12v trigger - perhaps see this link too:
This thread is what made me wonder what triggers the port to stop the audio output voltage.
in the thread it says “When I tested the port, after the music stops playing the 12v trigger turns off exactly 2 minutes later”
I assume it’s the pausing/stopping of the playing audio source, as the Port then goes into standby mode - not sure about the two minute period, but maybe your Amp is not a 12v trigger input, but a 12v output, or a ‘limitation’ of your Amp, that’s just keeping the Port awake? Is there maybe a setting that needs changing on your Amp, perhaps? What happens when the cable connection is removed from the trigger?
I currently do not use the trigger from the port to the amp. There is only 1 trigger input into the amp so having 2 port triggers won’t help unless there is a box that I can combine the two port triggers with and output only a single trigger. I can’t find that type of device. I don’t think I should take a Y splitter and join the two triggers together.
My hope is that I can figure out the audio output so that the amp works correctly based on the output of the ports with no trigger.
Perhaps I need to change the Port’s line-in Source Level to 8, 9 or level 10 in the App “Settings/System/[Port Room Name]. I’m not sure if any of this would help differentiate on and off from the output perspective
I currently do not use the trigger from the port to the amp. There is only 1 trigger input into the amp so having 2 port triggers won’t help unless there is a box that I can combine the two port triggers with and output only a single trigger. I can’t find that type of device. I don’t think I should take a Y splitter and join the two triggers together.
My hope is that I can figure out the audio output so that the amp works correctly based on the output of the ports with no trigger.
Perhaps I need to change the Port’s line-in Source Level to 8, 9 or level 10 in the App “Settings/System/[Port Room Name]. I’m not sure if any of this would help differentiate on and off from the output perspective
The ‘source level’ voltage adjustment will apply and increase/decrease the volume of the line-in input only ...and whilst that might help to wake your Amp etc. It seems your issue is not that, but instead it appears the Amp is not going into standby, which perhaps should happen when your playing audio source (line-in, or built-in Sonos audio sources) are paused/stopped.
To begin with, I would expect you to to be able to see the audio as no longer playing on the Port room in the Sonos App. Check the Port ‘room’ on the the Apps ‘browse tab’ (usually the small graphic equaliser icon stops/disappears). Then after a short period (perhaps 2 minutes) I guess the connected Amp should power off, that’s if it’s 12v trigger is connected to the Port and the Amp software is designed to do that action.. maybe see what it says in the Amp user manual.
Check too that the Port is stopping playback of the audio - I would disconnect the Ports line-in cable and just use the built-in Sonos music services when testing the stopping of the audio playback and just see what happens in that case🤔?
Listen carefully to the amplifier’s output. Is there some sort of constant, low level, low frequency signal?
If you have an expert friend or kid, they could make you a simple combiner for the 12V triggers.
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