Is anyone able to help with this please?
I guess u5 is a divider. Is there a particular clock frequency that means the divider isn't needed, even up to 384k?
You will need pretty much everything. Divider free option (no U5) with 45.xx/49..MHz Clocks for up to 384KHz is still being investigated. Chanh tried this but may have damaged the S03 in the process - returned for repairs
Hi Acko, I've been thinking more on the next steps for my project, particularly along the lines of the Edel NMR, which is perhaps a more rounded/reliable solution than the BBB approach?
Anyway, have you had a chance to play with it yet and form any views on its audio performance?
I'm thinking of ordering an Edel NMR shortly to replace my BBB but not simply as a straight swap; my thinking is to get more flexibility, particularly regarding different DACs by housing the NMR in a separate enclosure and providing a LVDS interface (probably Twisted Pear Teleporters). If I go that route, in my current DAC I will have a LVDS module providing the data inputs to my SO3 (BCKL, LRCK, DATA and Clock Select). I know I'll have to provide a 3.3V supply for the isolators on the SO3 too. As with all things, such an approach will mean I'm making some compromises but I believe the flexibility of being easily able to use different DACs, all with the 'lossless' 32bit volume control, makes it worthwhile. Thoughts?
On the subject of the NMR, any further thinking on deriving an adaptor board for the output connector on the NMR?
Ray
Anyway, have you had a chance to play with it yet and form any views on its audio performance?
I'm thinking of ordering an Edel NMR shortly to replace my BBB but not simply as a straight swap; my thinking is to get more flexibility, particularly regarding different DACs by housing the NMR in a separate enclosure and providing a LVDS interface (probably Twisted Pear Teleporters). If I go that route, in my current DAC I will have a LVDS module providing the data inputs to my SO3 (BCKL, LRCK, DATA and Clock Select). I know I'll have to provide a 3.3V supply for the isolators on the SO3 too. As with all things, such an approach will mean I'm making some compromises but I believe the flexibility of being easily able to use different DACs, all with the 'lossless' 32bit volume control, makes it worthwhile. Thoughts?
On the subject of the NMR, any further thinking on deriving an adaptor board for the output connector on the NMR?
Ray
Ray, I am also thinking along the same lines. Teleporter LVDS is fine but I if Edel (or BBB) works out best why not select just one only and put in the same casing (separately shielded of course) with direct connections and avoid all the complications of signal conversions. I am also assuming you will eventually settle for just one type of DAC. I have some plans to do a Sync HDMI version with LVPECL signals as shown where even the clocks are transmitted for synchronous re-clocking - more complex and possibly only for those who want a complete DAC System.
Again concept only at this stage ....
For EDEL-NMR, I will roll out an adapter board soon (before any testing can be done). Primary reason for buying a sample was to get the manufacturer to push the specs up further to cover up to 384K. As you can see this was only partially achieved with the revised hardware at this stage but they have promised to press on to develop the matching firmware soon. Yes, the built-in buffer (now, 2s length) and 32-bit Vol are looking very attractive
Attachments
Enrico many thanks for the help.
Can I feed the J3 & J6 from the same J1 5V PSU or must to be isolated?
Thanks Acko, my thinking behind the use of LVDS interfaces goes something like this...
Currently the DAC I'm putting together, which includes the BBB/SO3 combo, will essentially be my system 'pre-amp' (the network renderer is my only 'source'. I have monoblock power amps located next to my loudspeakers and the preamp will connect to them via longish (3-4m) analogue interconnects.
Now, what if I had another ES9018 DAC, so I could run both in mono mode, and relocated them to be next to the input of the power amps with interconnections to the source via LVDS? The theory says better DAC performance and 'lossless' and 'voiceless' interconnects (conveniently ignoring the debate on whether you can hear differences between different digital cables). And of course, with the EDEL-NMR you have a single master volume control with full remote control (no need for a physical volume knob).
But wait (imagine you're watching a home shopping channel...), there's more. What if I had two way loudspeakers that are bi-amped; if something like the Soekris R2R DAC works out well I could incorporate digital crossover functions into the DAC itself and the DAC board could even be located inside the power amp. As it happens I'm planning a move towards two way open baffle speakers.
As a by product of that approach, apart from the loudspeakers the conventional hifi infrastructure in the sitting room (you know, the focal point of the rack full of black boxes) is essentially dissipated to become much less conspicuous.
Count me in for one of the EDEL interface boards.
Ray
It is not required be isolated but is more relevant to the current consuming... give a look to the reply from Acko to the same question http://www.diyaudio.com/forums/group-buys/227502-amanero-isolator-reclocker-gb-139.html post 1388.
Regards,
Enrico
...
Sorry for my ignorance, but if I feed this with amanero, the only power supply that I need is J1(1) with 5V and (2) via 3.3V amanero output.make sure both the 3.3V pads are connected
Finally, the big C4 over the LTFDK area.
Am I right?
Lemon,
You need to power up with 5V the J3 and the J6 as well.
Don't forget the bridge in the K1 position.
Regards,
Enrico
Do you want to populate both R3 and R4?Only R2 for your build. Please remove R4
BK
Either way will be fine but prefer to drive clock from its own power in a final setup.
Please see wiring diagram and BOM as shown in the manual for more information
For Sync Re-Clocking with Amanero:
Please configure Amanero with:
1. CPLD: Slave_for_1080
2. CPU: Firmware 1080
3. Set Config bits as shown to match S03
Please be aware that there seem be a issue with the operation this way. First reported by Miksi here:
post#1050
Not sure if others have experienced the same problems.
I have been following up and found that only 44.1k files worked properly on my setup. As soon as 48k music is played the Bit_Clock from Amanero disappears and no sound!
Also, when I tried HiRes DxD (358.8k 24bit pcm) music from Nordic 2L e.g.
http://www.lindberg.no/hires/test/2L38_01_DXD.zip all I heard was garbled sound!
Looking more like a firmware issue with the Amanero as S03 works well with other transports for both 44.1/48k-based music.
All these have been reported to Amanero about a week ago and awaiting response. Hopefully this can be fixed soon
Attachments
Just had my DDDAC ufl delivered today James. Thanks Acko, great little boards.
Acko, what's the latest on the small adapter boards please?
Just to recap, I'm interested in
1x DDDAC-U.FL
2x AKX2520
1x BBB-U.FL
Also, if I'm buying a pair of NDK2520 clocks for synchronous with bbb, does it look like 45/49 is my best bet?
thanks
ahh, k. have I missed a step where I should have got in touch to confirm? I was on the list, but assumed I'd get a PM. It's very likely I've overlooked something. Too many plates spinning at the moment....
ahh, k. have I missed a step where I should have got in touch to confirm? I was on the list, but assumed I'd get a PM. It's very likely I've overlooked something. Too many plates spinning at the moment....
I think ACKO had a problem with the first batch of DDDAC ufl boards and then he mentioned somewhere in this thread about a week or so ago that the replacements had been sent out. Perhaps you'll get them in the next few days.
Found it:
http://www.diyaudio.com/forums/group-buys/227502-amanero-isolator-reclocker-gb-53.html#post4175510
Last edited:
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.