Suggestions for wall outlet behind a wall mount TV. Wood siding and minimal high overhang. Need to also pass 1-2 HDMI cables as well.

I know about the arlington INBOX recessed outdoor boxes:

Arlington INBOX

Would need to use 2 of these with one the receptacle and another for the LV cables. 

Any other options?

They make a 2Gang version of the IN-Box

Yes, but I didn't see where it was dual voltage (divider available).

[Link: aifittings.com]

Scroll to the bottom and it shows what is shipped with the box

Ah! Nice!
Good ole' Arlington.

Yes, always providing a solution to a non-typical installation and am very thankful for it.

looks like only 1/2” knockouts. Doesn’t look like can use for HDMI cables.

Wish someone made a box with similar low profile cover, which has a deep i wall box to connect to LV resiguard conduit. Large enough to pull HDMI cables now or future. Interior walls currently all open.

They can be drilled out, to allow fitting larger conduit.

This needs what it needs, regardless of what a homeowner or designer wants. Use the larger box that allows at least 1-1/2" conduit or you'll be hating life when you need to replace or add something.

By large do you mean 2 gang? I would think that only works of you would be attaching a conduit from the rear. If in a wall cavity, there doesn't seem to be the space on the top or bottom for 1-1/2" conduit. The injection moulded parts on the interior for the screws for the plate seem to take up considerable space where you would need to drill and attach conduit.

The single gang Horizontal version seems to be flat and no obstructions.

By 'large', I mean the size that allows attaching a conduit that's large enough to pass an HDMI cable while other cables are inside. In keeping with the rule of thumb that the conduit shouldn't be filled more than 65%, that means at least 1-1/2" and in that case, it would be best to install the HDMI before the other cables. If the HDMI length is more than 30', the recommended optical type will require care to be taken when adding/changing cabling.

Since the wall isn't finished, this is the time to stake your claim to the real estate needed for a larger box- even after the cables have been run, the box will still need volume to handle everything and I would bet that at some point, you'll need more space in a box that can't easily be replaced.

Make everyone understand that future-proofing is a good idea.

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