Quote:
Originally Posted by HD Goofnut
Omega, how is this possible? I thought audio could not be transmitted over a DVI connection.
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Audio..No it can not be sent over a standard DVI connection.
In the configuration that I am addressing, your HD source(s) would directly connect to the Onkyo 606 via HDMI and you would then have an additional HDMI cable coming from the Onkyo 606 to your DVI connected HDTV. All audio would be sonically output by the Onkyo 606 to your connected speakers (5.1 or 7.1). So the Onkyo 606 sits between the Video sources and the HDTV. The Onkyo 606 AVR has 4 HDMI (In - from Sources) connections and 1 HDMI (Out to HDTV) and can switch between them seemlessly.
Only the video would end up going to the display via the HDMI to DVI connection.
If you need audio to go to the HDTV's internal speakers (as opposed to the 5.1 speakers connected to the Onkyo AVR ), you would need to use either the digital input on the HDTV or the stereo RCA jacks. (I disable mine through the HDTV settings.)
But I would not recommend that you use both the HDTV's internal speakers and the ones connected to the Onkyo AVR , at the same time!
There are three things to note in this configuration:
1. If your HDTV has an internal ATSC (OTA HD) tuner that you use or wish to use, you will need to connect the audio out (Digital or analog) from the HDTV to the Onkyo 606 AVR (Requireing a Video input assigment and an input switch to that video input, on the AVR) to hear any audio out, unless you enable/control the HDTV's internal speakers each time you want to use this capabilty.
2. The Onkyo AVR must be on preferably before the HDTV or the video sources, to hear any audio output from your video sources. A good programmable universal remote helps here A lot!
3. If your HTDV support an PiP feature, this configuration will not help you view two external to the HDTV video sources at the same time. If your HDTV has and internal ATSC tuner, you may be able to use the PiP picture between the currently selected video source on the Onkyo AVR and the OTA broadcast channel that is currently being decoded by the ATSC tuner.
HOWEVER, since in the configuration, the audio is being output to the speakers on the Onkyo 606 AVR, the audio switching within this PiP feature will not work correctly for the two different PiP sources. Believe me when I say that it takes some serious cabling to use the PiP features of an HDTV in this configuration! 
One would figure that this (along with one or more high quality ATSC tuner(s)) would be incorporated into the AVRs functions ,since it is doing all of the video source switching. 