Originally Posted by DESCypher
Would I need to use an HDMI switch to be able to use my cable box in multiple rooms? As in when I'm in the office and I want to watch TV or bedroom etc. This way I don't need to keep changing out the HDMI on the extenders.
If you're just trying to share a cable box, then a simple HDMI splitter between the cable box and the receiver would be the correct solution. The second leg of the splitter goes to your extender to feed the 2nd room (bypassing the receiver completely).
Downside potential of this is that the receiver will no longer be "masking" the lack of DD5.1 (likely) support of your 2nd room display, and will push the common-denominator 2-channel PCM audio. Getting the set-top box to revert to DD5.1 may occur when you turn off the 2nd room TV, or it may require you to reboot the set-top box, and worst case, disconnect the TV...