Firmware 12.2.12

[sdn660]

Saturday I upgraded my D220 from beta12 to beta14.
After the upgrade AIR was not working anymore.
Installing other FW versions did not solve the problems.
 
Yesterday I send an email to Devialet to report the issues and ask for advice.
This morning Mathieu from Devialet mailed me.
"..... DOS can be sensitive to the controller inside the sdcard used during the upgrade. I advice to reattempt an upgrade using another sdcard.
Upgrading DOS should last between 2'30 and 5'00 minutes, no more. ...."
 
It worked. By using another sdcard upgrading went smooth and most issues were solved.
 
One issue I still have is the amp running at high temperature. The D220 warms up to 51 °C without playing.
My D200 operated at significant lower temperature, max ~ 42°C.

Is operating temperature of D220 higher than D200? I think 51 °C is pretty hot.
 
Any ideas on the subject?
 
Thanks, 
Simon
 

I never have these high temps on my 1000pro, but the case can dissipate more heat than the 220. But even 51° is not much for an amp. Pure class-A or tube amps have much more...
Maybe you can change the placement. Hangin on a wall works better than standing in a rack...

Hi Vivialet,

Yes, .. I owned a poweramp with EL34 pure Class A .. If I remember well output was less than 1 Watt .. long time ago.

I own my 220 a few days now and I didn't notice the high temperature before the upgrade.
I am wondering if the high temperature was due to the beta14 firmware.

i'll just go back to DOS 2.1.0  fw12.1.2 to find out.

I just read the thread about PRO temperatures https://devialetchat.com/showthread.php?...emperature . Reported temperatures vary significantly.


Thanks for your input!