Only productions related changes, the thin film resistor values have been changed slightly, but not the precision, and by removing parts not used around vref there were space for some more of the 100u capacitors on vref.
Question about upgrade firmware :
I've buy a card of 1021-02 rev.3 never used, never assembled in DAC. I think is the 0.8 firmware. I've planned to put an RS232 for upgrading. Should I proceed step by step (0.9, 1.05, 1.06) or it's better directly the last 1.06 ?
Thanks
I've buy a card of 1021-02 rev.3 never used, never assembled in DAC. I think is the 0.8 firmware. I've planned to put an RS232 for upgrading. Should I proceed step by step (0.9, 1.05, 1.06) or it's better directly the last 1.06 ?
Thanks
Hallo Soekris
Please give me a hint when the new firmware with the new larger 4K filters are integrated in the V.5 dam1121-02.
I am ready and would like to order one.
Thank you
- There is no "v.5" for 1121. Only one 1121 HW version (with 2 resistor configurations).
- 4k filter support is a FW upgrade valid for all DAC products once FW is released. 2 so far.
- There seem to be no 4k filters released as of yet. Actual filters are separate form FW.
No need to wait to order as I see it.
//
- 4k filter support is a FW upgrade valid for all DAC products once FW is released. 2 so far.
- There seem to be no 4k filters released as of yet. Actual filters are separate form FW.
No need to wait to order as I see it.
//
I can hear your words.
But I would be very satisfied for this time, if I get my project from the hardware side well done. I want to deal with the software later. That's why I'd like an up-to-date solution right from the start.
soekris,
will ther be an new rev. of the 1121?
but I will wait for the mentioned dam 1121 FW ;-)
greetings
But I would be very satisfied for this time, if I get my project from the hardware side well done. I want to deal with the software later. That's why I'd like an up-to-date solution right from the start.
soekris,
will ther be an new rev. of the 1121?
but I will wait for the mentioned dam 1121 FW ;-)
greetings
Cool. Did you already do experiments & listening sessions with 4K filters? Does it bring audible improvements?
Fedde
Fedde
I have some more questions...
Does the 4k filter option come with a penalty (e.g. is other functionality removed)? Can you still have four filters with the upcoming firmware?
Fedde
Does the 4k filter option come with a penalty (e.g. is other functionality removed)? Can you still have four filters with the upcoming firmware?
Fedde
I updated my dac1541 to 1.20, now it have sound when the lamp of yellow and red are lighting only. What can I do
Did you remember the "update" command and to power cycle ?
Otherwise please email info@soekris.dk for support.
I forgot to enter the update for the first time, and now I'm successful, I like the sound of the yellow light.
@Soekris
Could you share what minor updates will be made for DAM1021? I look forward to the update! I hope that additions to firmware can be made to assess bit perfectness of incoming signals.
I did some experiments with the S/PDIF related settings of my RME ASIO soundcard with my DAM DAC. I hear a (very) significant improvement in sound quality (more smooth & spatially focused) when I change the S/PDIF setting from consumer to professional (AES3). I understood from the RME manual that the S/PDIF voltage is doubled during professional mode (from 1 Vpp to 2.3 Vpp).
I may have an issue with the S/PDIF cable and/or connectors (e.g. reflections). I could imagine that raising the voltage could help to reduce jitter as waves would be made more square. Do I need to be concerned that the higher voltage S/PDIF causes damage at the Soekris DAC?
Fedde
Last edited:
I'm lost in all this pages, what's the input binary coding scheme feeding the r-2r ladder via the 595 registers?
Thanks.
Thanks.
Last edited: