Hi DQ828,

Have you tried disconnection the source that is connected to the toslink module and connect only the spdif source? Some others too are having lock isseus when they have both sources (spdif & toslink) connected somehow.

You could also play a bit with the DPLL settings. Try increasing the value. This should allow the DAC to get a lock to the incoming signal much easier.

I started with normal cable in my first attempt, I have now gone back to the normal cable & tried the + & Grnd connection to no avail, this time I didn't even get a flicker, I'm wondering if I should try swapping the + & -?

What I did do was install a standard RCA connector and use my original SPDIF cable that has the RCA on both ends & guess what it worked?

That leads me to believe there is an issue with the new cable or the BNC connector, or the way the new cables RCA connects to the Squeezebox?

Any thoughts?

I did check the continuity of the new cable & it appears to be fine

Edited by user Monday, June 11, 2012 2:27:06 AM(UTC)  | Reason: Not specified

There is a question because I just spent a bunch of money on cables & connectors trying to get the supposed best result, 75ohms & no reflections, and I generally don't take the approach "oh that doesn't work, I'll just ignore it" maybe Leon has a thought on what may be wrong? I've' tried everything I can think of.

I purchased 2 BNC to RCA cables & they are both doing the same thing, so I don't think it is the cables.

I have just connected another component via the new BNC cable, while the older SPDIF cable was still connected to the RCA input plug (two components connected at the same time), as soon as I connect the BNC cable, it upsets the SPDIF connection as well, hmmm, there seems to be some sort of cross talk going on.

You recommend in your manual

"Although RCA connectors are often used as a coax connector, please beware that these are rarely of true 75Ω impedance. To avoid reflections due to impedance differences, instead of using RCA it’s better to use a true 75Ω BNC connector. There are several types, but whatever connector you choose: make sure
it is 75Ω impedance. Suggestions for connectors can be found in the extended bill of materials."


that a BNC connector is installed as the input to stop reflections, as almost all consumer sources (cd players etc) have standard RCA outputs for the SPDIF It seemed logical that you where expecting the source to be RCA & the input to the DAC to be BNC. If this is not the case it appears I have wasted a bunch of money on 2 custom cables & 2 input connectors.

Edited by user Tuesday, June 12, 2012 3:22:29 AM(UTC)  | Reason: Not specified

Leon

Your manual is fantastic, if you do another edition can I suggest you point that out in the manual just so beginners like me don't misunderstand.

Now all I have to do is work out how to get the BNC connector on to the Squeezebox javascript:insertsmiley('%20','/forum/Images/Emoticons/eusa_angel.gif')

Regardless of all that I'm blowed if I know why the cables don't work, I may have to give up after all & put it down to experience.

Thanks for you help

Edited by user Wednesday, June 13, 2012 6:07:59 AM(UTC)  | Reason: Not specified

People will mod anything! thanks for the link, I think :)

The resistance is the same as the old SPDIF RCA cable I am using that works fine 0.2ohm.

It's a mystery to me.

Thanks for the input.

FWIW, I use cheapo RCA cables for S/PDIF (when I use it). Never had a problem.