440 Pro warmer than 220 Pro - Even in Standby

[markush]

Did anyone also experience this - or has an idea what could be causing this?

[Elztalbiker]

Same by all dual monos. Companion is a bit warmer, in standby also.


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[markush]

Same by all dual monos. Companion is a bit warmer, in standby also.

Oh didn't know - thank you
Was even getting a bit concerned that there might be something wrong in the setup etc.
Though still wondering why this is the case even in standby. There shouldn't be anything going on between master & companion right?

[Elztalbiker]

Companion is still contacted to the Master, waiting for signals and have in this reason work more. The result is a higher temperature by the Companion.


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[daniel.avasilichioaei]

Companion is still contacted to the Master, waiting for signals and have in this reason work more. The result is a higher temperature by the Companion.


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I'm not sure about this...
I had the same problem on two configurations: 210 Pro and 440 Pro.
For both, on companion the only active input is digital in. Everything is off, including remote. On master, remote is on, and also multiple inputs (at least Ethernet). So, master is waiting signals from more sources than companion. Still, master is cold, and companion is warm. This is for both stand by and power off (long press on remote power button).
I also watched displays on startup, and there is a big difference between master and companion when wake up from sleep. This difference doesn't occur after disconnecting both from the mains.
Based on this, I suppose that this is a design issue: companion stand by / power off mode is very different from master. I don't know if this behavior may generate different performance on master versus companion, after some years of usage...

[markush]

I got the same setup! Ethernet, wifi, Line in on Master and everything off on companion.
Hm - or should companion have the identical setup as master? But that wouldn’t make sense for me.
Though having a noticeable higher temperature also in stand by still keeps me wondering.

[Jean-Marie]

I seem to remember that if you use the trigger connection between the two in addition to the digital (I assume trigger out from master -> trigger in on slave) it lowers the temperature of the slave (which is understandable because the slave can enter a deeper standby mode).

Jean-Marie

[daniel.avasilichioaei]

I seem to remember that if you use the trigger connection between the two in addition to the digital (I assume trigger out from master -> trigger in on slave) it lowers the temperature of the slave (which is understandable because the slave can enter a deeper standby mode).

Jean-Marie

This is very useful information. Thanks!

[daniel.avasilichioaei]

I just made some test on configurations with and without trigger cable. With trigger cable, startup on companion after stand by or power off is very different versus without cable. This is telling me that commands that master is sending to companion are different via digital versus via trigger cable.
I'll perform additional tests, and then come back with updated info.
Based on what I see now, I am expecting:
- No changes for temperature during playback.
- Possible changes for companion temperature during stand by and power off. ---> This will solve my issue. 

[daniel.avasilichioaei]

I completed the test: I managed to equalize the master and companion temperature in stand by and power off modes.

Sources of information:

• Devialet "RS232 Commands documentation": attached file "Automation-Devialet-notice.pdf".
  
• Comparison of configuration files for the companion: attached file "Comparison.pdf".
  
• Configuration without trigger cable: attached file "WITHOUT TRIGGER CABLE.png".
  
• Configuration with trigger cable: attached file "WITH TRIGGER CABLE.png".
  

The test result:

• The use of trigger cable does not affect the operating temperature for the master and companion.
  
• The use of the trigger cable does not affect the start cycle of the master, but does affect the start cycle of the companion, for all these situations:
  
• --- Starting after unplugging from the mains.
  
• --- Starting after power off (long press on the "Power" button of the remote control), regardless of whether the start is made from the remote control or from an application (for example "Roon").
  
• --- Starting after stand by (short press on the "Power" button of the remote control), whether the start is made from the remote control or from an application (for example "Roon").
  
• Use of trigger cable affects companion temperature in standby and power off modes; does not affect the master temperature:
  
• --- Without trigger cable, companion is substantially hotter than master.
  
• --- With trigger cable, companion has the same temperature as master.
  

Important note:
In order to obtain the above results, it is important configuration file for the companion to contain the settings written in blue in the attached file "Comparison.pdf":

• "TRIG_IN_MODE": "DAISY_CHAIN_SLAVE"
  
• "SPDIF_CTRL": "OFF"
  

Unfortunately, the behavior of the configurator is somewhat random and these settings are not always obtained, even if you use a trigger cable configuration. I could not find a safe way to get these settings, but I have the feeling that these elements help:

• Start a new configuration, do not use an existing one.
  
• Make all the settings for the companion first, but do NOT open or change the settings for the digital cable between the master and the companion (the name is either "Digital" or "Chaining").
  
• --- Note: After you open this popup and activate "Chaining Input", the setting can no longer be changed; you will need to make another new configuration file.
  
• Make the master settings.
  
• Save the master configuration file.
  
• Save the companion configuration file.
  
• Check that the companion configuration file includes the two settings above. If the settings are not as above, then the companion will behave as if there was no trigger cable (it will have higher temperature in standby and power off modes).