Question about length of SPDIF COAX interface cable length

kijanki,
Thank you for the detailed response. I was surprised that there did seem to be a perceptible difference between the two cables, I settled on the 8 inch cable. I too was under the impression that the 1.5 meter cable was the correct length to avoid internal reflections, now i'm not sure if this is the case.

Thanks to all who chimed in!

Hi,

Not sure why this is the case, but I spent quite some time switching between my 8" cable and 1.5M cable. For some reason, I am finding myself preferring the sound of the 1.5M cable, where the 8" cable seems to sound a bit too bright.

Hi kijanki, thanks for your kind assistance. In another room of my home where my Home Theater setup is located, I have connected the output from my DAC in my main system to the HT system DAC input. Using some return air ducts I got lucky and was able to install a 9M COAX cable I made myself. The cable is a 75ohm quad-shield terminated with 75ohm RCA style connectors. Anyway, my point is that this connection sounds great even at 9M (I think the max you can go is 10M) so something is going on with cable length with relationship to sound quality. Question is, is there a formula you can go by to determine optimal length of COAX cable? For example eliminating a transmission line by keeping a cable under 12", or in multiples of 1.5M which is my case here? I do believe not having a transmission line to be the best place to start but it did not work out for me with respect to SQ.