Originally Posted by jack d
Lumagen's response to my question about where to put the Radiance was as follows:

"The easiest system configuration is to connect the receiver to one HDMI output on the Radiance and connect the display to the other HDMI output. By default the Radiance software is configured for the receiver to be connected to the HDMI 1 output and the display to HDMI 2 output.

The Audio EDID is simply a memory that the video source can read to get information about the capability and preferences of the receiver. The Audio EDID doesn't control the video source, it only makes suggestions about the audio modes that it prefers.

If you connect all of your sources directly to the Radiance, you just need to select an input on the Radiance, which selects the audio and video inputs.

There is a global audio menu where you can setup the audio EDID. Press "Menu, Audio, Ok". Make sure that you "Save" the new settings when you are done.

You can over-ride the global audio EDID by setting up a EDID for an input. Press "Menu, Input, Audio Setup, Audio EDID, Custom, Ok". Make sure that you "Save" the new settings when you are done."

I don't think, however, that really answers the question. My question is about the need/importance to split off the audio from the HDMI transmission before the video processing is done. Lumagen's response seems to indicate that they do not see the need but it seems an indirect response.

My feeling is that I would prefer to put the 621 in front of the Radiance. If I understand correctly, I supose the only benefit to doing the opposite is to use the Radiance's audio EDIDs to ensure that the audio format is transmitted exactly as you want.

The advantage of putting the Lumagen ahead of the HD621 is that you can take advantage of the apodizing and upsampling features of the HD621 on more devices than the other way round - or at least that's the way I understand it. I got to know Jim quite well during the beta programme, I'll email him direct and ask him what steps they take to keep video noise away from the audio circuitry.

Tim