I have a note about changing the volume in the Roon application.
In dCS Bartok: To change the volume, turn the knob on the front of the unit.
The volume changes in the following steps:
Between 0 dB and -50 dB: 0.5 dB steps.
Between -50 dB and -80 dB: 1 dB steps.
This also works with the dCS Mosaic application.
In the dCS (Mosaic) application this is no problem at all and is a really good way of setting the volume as good as possible. The 0.5 dB steps do a very good job.
In the Roon application, if you only use + or - in the volume setup, every change is made in 1dB steps. If you are below -50dB on the dCS Bartok, it is not possible to set 0.5dB steps. In the Roon application, if you use only the volume bar directly (without + or -) in the volume setup, each change is made in 0.5 dB steps (in full volume), but if you are above -50 dB on the dCS Bartok, you will not see -55.5, but only -55 (because between -50 dB and -80 dB: 1 dB steps). If you are below -50 dB on the dCS Bartok, everything is correct (0.5 dB steps).
As I said, the 0.5 dB steps do a very good job. It will be perfect if I only do this in the Roon application. Today I also used the dCS Mosaic application in the background (for the volume settings).
Thanks for reaching out with your report. I’ve forwarded it to our hardware team for closer investigation. We can’t make any promises on what is possible here, but we’ll let you know when we have more details to share!
Thanks for your patience while I checked with the team on this. Just to confirm here, when you were able to reproduce this issue in the dCS app, were you ramping up/down the volume quickly?
As in, does the same behavior still occur if you go to -50dB and then slowly try to change it up/down via the dCS app, does it still go in 1dB steps or does it change in .5dB steps?
To give you some background on this, the volume step is something that is being controlled by the device itself, and it looks like the step is being changed in the dCS app but the device might not be sending the correct step before/after the -50dB mark, if this is the case.
Also, just to be clear here, the way to reproduce this would be as follows?
Open dCS app and set volume to -50dB
Lower volume by (1 press) (which would be -1dB) in dCS app to -49dB
Notice that in Roon app it says -49.5dB instead of the correct -49dB
Is this accurate? Let us know when possible, thanks!
Now I am confiused :), we start for the beginning.
You can do everything (crazy) in the dCS application and everything will be correct on the front of the unit (always). This means that the settings in the application will be the same as in dCS Bartok and if you use the knob on the front of the unit, everything will be correct in the dCS application (always).
As described in the dCS documentation:
To change the volume, turn the knob on the front of the unit.
The volume changes in the following steps
Between 0 dB and -50 dB: 0.5 dB steps.
Between -50 dB and -80 dB: 1 dB steps.
This works perfectly (with the knob) with the dCS Mosaic application.
This also works perfectly (with the knob) with the Roon application.
The “problem” is the volume setting “slide bar” itself in the Roon application. In the dCS application there is only a “slide bar” (without + and -) (fig. 1) and this works 1:1 like the knob on the front of the unit (always as described in the dCS documentation). In the Roon application you have “slide bar” and + and -. If you only use + or - in the volume setup, any change will be made in 1dB steps. If you use only the volume directly (without + or -) in the volume setup, each change is made in 0.5dB steps (fig. 2a).
This means that I can set the volume in the Roon application (with a “silde bar”) to -50.5 dB (shouldn’t be possible if you read the dCS documentation) and this will be set in dCS Bartok (fig. 2b) and in the dCS application you will still see -50.0 dB (fig. 1).
It all depends on what you are doing in the Roon application: “slide bar”: 0.5 dB steps" and “+ and -”: 1 dB steps. In dCS Bartok it will be the same setting as in the Roon application (should not be possible if you read the dCS documentation), but it will not be the same dCS application.
I do not think we have a problem, just a customisation option.
… the algorithm that we use for volume control is capable of applying volume correction in (smaller than) 0.5db steps across its whole range.
The volume control on the Bartok / Rossini / Vivaldi is simply coded in software to work in 0.5db steps at the upper end of the volume control and changes to 1db steps because 0.5dbs steps aren’t particularly useful at that end of the volume range whereas if you are controlling any of the units via RS232 from something like Crestron or Control 4 then you only have 1db steps available over the whole range but it still uses the same algorithm.
Hi @Marcin_Rutkowski,
Thanks for that clarification and additional information. Since there doesn’t seem to be any problem with your Roon setup I will set this case to close. If you’d like you can submit a Feature Suggestions post about this. We do take note of popular feature requests there.
