Coax to BNC connection for digital

Hi Mesch,

To add to Auxinput’s response, just make sure that the input impedance of the BNC input and the impedances of the cable, the BNC connector(s) on the cable, and any adapters that are used are all 75 ohms, and not 50 ohms.

Also, if you already have a suitable 75 ohm RCA-to-RCA cable at hand, you might consider trying it in conjunction with an inexpensive 75 ohm BNC male to RCA female adapter, such as this one:

https://www.bhphotovideo.com/c/product/1024160-REG/remote_audio_app38_rca_phono_female_jack.html

Happy holidays! Best regards,
-- Al

I use the DH labs d750 which is terminated with rca on the transport end and bnc on the dac end.  No adapter necessary.   It is an excellent cable imho.  
https://silversonic.com/products/digital-cables/d-750/?_vsrefdom=adwords&gclid=Cj0KCQiA0ZHwBRCRA...

Blue Jeans Cable offers a couple digital cable options with BNC to RCA terminations... https://www.bluejeanscable.com/store/digital-audio/index.htm

Thanks all for the this information. You have answered mine main concerns, regarding having a cable made, if there were adapters, and the issue as to 50 vs. 75 ohms service. I do have 75 ohm RCA cables and will will most likely look for an adapter. 

Given the DAC has BNC, should I purchase a server with BNC output I would  then just purchase a BNC cable which I suppose would need be rated for 50ohms. 

Forgot to edit..my main concerns.

Happy Holidays to all!