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manisandher wrote:

And I can indeed replicate this effect... but only with my RME FF800 and not with my Weiss AFI1. With the FF800 (slaved to the Pacific), changing the Pacific's wordclock does indeed change the speed of any audio/video being played. (Going further, using the FF800's internal Direct Digital Synthesizer (DDS) clock, I have 'total' control of the speed of audio/video.) This suggests to me that software can indeed be slaved to a firewire device. However, I cannot replicate this effect with the Weiss AFI1. Here, the player/recorder software seems to dictate the frequency. If the frequency down the chain (with the AFI1 or Pacific as Master) is different to that of the software, then there is simply no sound produced.

Interesting. If so then I would say that Weiss AFI1 defeat the purpose of running the Pacific as Master Clock. What would be even more interesting to see if the sonic benefits of having Pacific as Master will manifest itself while Weiss screw up the software slaving. It is possible that despise the AFI1 does not do slaving-transparency but it still would sound very reasonable. Why knows…

manisandher wrote:

For now, I have tried to hear a difference in the sound by simply unplugging the second AES/EBU cable whilst listening to a 44.1/88.2 file in single-wire mode. I'm not sure how closely this replicates step #10 of your procedure, but I cannot hear a difference (in either level or sound quality) with the second cable in or out... Have I totally misunderstood the issue here?

Actually you did not misunderstand the issue the issue but it turned out that I was an idiot. As soon I got your email I decided to do it again. This time I very much as you do not hear any difference. I did it very many times and there was no difference. I absolutely remember as I heard a huge worsening of sound as soon I plug the second digital line in. Upon the further experiments I learned that this problem manifest itself ONLY if I do not mute this second digital line on my Lynx mixer. I was under impression that switching the Lynx and Pacific in single-wire mode shall make them doing not even feel the second line, not it is not how it works. Anyhow, explicitly muting the second line via the Lynx mixer addresses all problems. I thought I did it but I did not realize that it was a very critical step. I wish the Pacific would be smarter with not-used line rejection and I wish the Lynx mixer lines would be more isolated.

Anyhow, some I figure out how to use it the Pacific is rehabilitated, in fact it become a relatively comfy multi-format processor. I just need to find for it a location what I would be sit higher in my rack as it is troublesome to  bend my body to read it display and to push the button with my big toe finger.

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