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Reference DAC Module - Discrete R-2R Sign Magnitude 24 bit 384 KHz

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R

rickmcinnis

Member
Joined 2006
smanz said:
It seems we are not talking about the same thing. My opinion is referred to the manufacturer´s obligations and the support ofered to his products. In this sense Soren seems to be regrettable, just a disaster.

In the other hand, we can take care about the consumer´s enthusiasm, those who really give the product´s support.

Regards
Click to expand...

Just what we need EU bureaucrats getting involved on one of the few things left with true freedom of choice.

The Spaniard should stick to ready made boxes with all of the right stickers attached.
 
R

ristar

Member
Joined 2013
peranders said:
Just wondering, how does the performance differ with different tolerances of the resistors?
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THD differences... Soren has updated his webshops with the specs...

0.01% resistors THD at -1dB is 0.005%
0.02% resistors THD at -1dB is 0.008%
and 0.05% resistors THD at -1dB is 0.015%

There is only stock left for 0.02%. Additionally, most (if not all?) of us received it in proper ESD packaging... that isolated case may have been a customs thing.
 
G

glt

Member
Joined 2004
diyaudio.com/forums/showthread.php?s=&threadid=140669
smanz said:
It seems we are not talking about the same thing. My opinion is referred to the manufacturer´s obligations and the support ofered to his products. In this sense Soren seems to be regrettable, just a disaster.

In the other hand, we can take care about the consumer´s enthusiasm, those who really give the product´s support.

Regards
Click to expand...

Product was released as a diy module. There is expectations to "diy". The benefit to us is that we pay cost or near cost.
 
Stixx

Stixx

Member
Joined 2003
original-ton.net
Quote:
Originally Posted by DEQ+TheEnd View Post
Can someone please confirm if this is how they received they’re dam1021?

Click the image to open in full size.

tia
No ESD bag for a such advanced (and expensive) pcb?
Click to expand...

The issue was discussed in the thread a while ago... seems as if it was an exception or customs opened the parcel.
I did receive mine in professional wrapping.
 
H

hannesie

Member
Joined 2007
AVMN.nl
I have made a temporal set-up with a Raspberry Pi and a I2S connection.
When I use Vortexbox 2.3 as a music server and all settings are correctly installed, I can play DSD via DoP, and it sounds very well.

I can use a ESS 9016 as a reference who can play native DSD.
 

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lehmanhill

lehmanhill

Member
Joined 2008
robertrowett said:
I am waiting to get more boards since the firmware to run the DAM crossover function is not released yet. Søren did say that he was excited to get this feature running for his own personal use, so hopefully it will be out soon and well tested by him. I would be happy for more updates so that enthusiasm does not wane for the product. I am very close to settling for minidsp as an alternative.
Click to expand...

Forgive my ignorance. I can see how the DAM filter programming capability would allow the DAM to act as both a crossover filter and a DAC for one driver (stereo pair). But won't it be necessary to have some digital programing in order to provide the same digital signal to each driver/crossover/DAC combination? It seems like one would need something like the MiniDSP miniSHARC or nanoDIGI in front of multiple DAMs to route the input signal to each DAM. I don't see how the DAM, as currently configured, would have the capability to really act as a crossover.

If I am correct (with a good chance that I am not), you may want something like a MiniDSP anyway and use multiple DAMs as high quality, good value DACs. I still think of this as a really interesting solution because, even if the crossover functions where handled before the DAM, the advantage the DAM has is that you could tailor the sound of each driver with the FIR filter.

Can anyone with more expertise shed some light on this topic?
 
spzzzzkt

spzzzzkt

Disabled Account
Joined 2005
Hi Søren,

I was curious if there was any obvious disadvantages to replacing the LME49710 in the output buffers with LME49990? The only spec I can see that is appreciably worse is the current noise density, but as the output impedance of the ladder is under 1K ohm so I imagine that shouldn't be a big issue.

cheers
Paul
 
J

J.Exbrayat

Member
Joined 2009
Hi,

I received my DAM card. It looks great.
I would like to use it with Raspberry V2 & VolumIO with direct I2S connection.

Anyone tried this ? Where can I find a good tutorial ?
The mains items :
- Which I2S driver to use in VolumIO ?
- Does the driver permit to us to manage the DAM volume capapability from VolumIO client ?
 
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B

bambadoo

Member
Joined 2003
Here is someone using that config
https://volumio.org/forum/soekris-ladder-dac-t2553.html

Of you want to control the volume from Volumio you have to connect the rpi to the dam via serial and use the umanager there.
But with current firmware the GPIO headers from rpi (ttl serial) to dam1021 are not compatible (3.3v instead of 5v) You then have to use an usb to serial interface on the rpi (which I do)
 
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