Ok So before burying my 13m HDMI cable into the wall, filling it, sanding it, filling some more, sanding to a nice flat finish and wall-papering with expensive wallpaper, I watched 10-15 BluRays, lots of Sky HD and plenty of PC over HDMI action to make sure there were no issues. At the projector end of this cable about 6" from the ceiling I have put a power socket and a HDMI wall socket. Nice and neat, the wall plate as a HDMI plug behind it that the 13m cable connects to, then I have a 50cm cable from the wall to the projector. It appears that despite prior testing, 13m is too long. I can't pull the cable out of the wall so I thought about chopping into the HDMI cable and feeding a double HDMI wall plate which would be 2/3 of the way - I could then use an active amplifier - the wall plate would be next to a normal 240 socket so power would be available. a) Does this sound like a good plan b) Would I be better just having an amplifier up by the projector c) Can you get HDMI wall sockets that require a solder joint or other non-female plug type connection behind? I have Googled it but i just keep finding wall plates with normal female sockets behind. Thanks in advance.