Confirmed. No problem using HDMI (with sound) through all to tv without stripping digital sound out to AVR.
Noticed something different which would indicate a change from DTV with the guide that is letting everything work;
Prior to Saturday evening, watching the greyed out 3d channels, they always stayed that way. Now at the first step of plugging the 3da-1 (without Gefen) into HDMI 3, the channels were not greyed out. No sound or picture and got error message as expected, but the channels were active. Selected N3d preview channel, got error message......
Then, final step of uplugging the 3da-1 from the tv, plugging it into the rear of Gefen then plugging the Gefen into tv....... 3d working great.
Good info re: the lamp life issue. So far the Dynamic setting helps for me. When I tune to a normal channel I will have to remember to return to Normal mode. After a couple days I'll probably be watching 2d most of the time. I do have a spare bulb.
For others out there, many have a 750 series with the LED DLP. I am not an expert, but it may not shorten the life of the LED running in Dynamic mode as much.
I am going to talk with Gefen and see how their production/availability is. My wholesale sources inventory is not as high as normal. I may either obtain a large supply, clone them and be able to ship them at a very low price, or get the programming to Gefen so they can be ordered direct from Gefen individually or with a group buy.
(Any group buy will be cleared with AvsForum)
PM me if there is interest in either method.