DAC V-1 "cannot reclock" with Rega Apollo or Airport Express

Posted by: ngarritson on 02 April 2016

Hi,

I have a DAC V-1 that I have been using at work.  It works flawlessly with my MacBook Pro as the input source via asynchronous USB.  I brought it home to try it out in my main system with a Rega Apollo R cd player and the Apple Airport Express for streaming.  The V-1 doesn't seem to work for either source.  I connected them both to the V-1 using optical cables.  In both cases I get an error message saying "cannot reclock".  How do I fix this?

At this point I am convinced the problem is with the V-1 because I have been running both input sources into a standard nDac via the same optical cables without any problems.  

Thanks for any input you can provide.

Posted on: 02 April 2016 by Jude2012

It could be that the sample rates of the two sources are varying or outside tolerances of the V1's SDPIF inputs.

The latest firmware update allows you select one of the SPDIF inputs to allow for such issues.  Assuming you have this firmware update, you select one SPDIF input to be more tolerant, labeled as 'forcing SRC'.

I can't remember the exact way of doing it.  However, it should be on the V1 'manuals and downloads' section on the Naim site. From what I recall its easy to do.  I have it set on one if the coax SDPIF inputs where the TV is the source.

Worth a go, if you haven't already.

HTH

Jude

Posted on: 02 April 2016 by ngarritson

It worked!  Thank you!

Posted on: 02 April 2016 by Simon-in-Suffolk

Just bear in mind when the V1, or most quality DACs are having to work this way when syncing with a transport, then the overall result will be compromised... Effectively the SPDIF transport reclocking frequency is having to be synthesised by the DAC as opposed to being synchronised to a precision crystal controlled clock in the DAC. This is often the case for lower quality digital transports. Though am surprised about the Rega CD player.. something doesn't sound right there....

Simon

Posted on: 04 April 2016 by Kevin Richardson

Try a different cable.