I honestly don’t get all the excitement over James Wan and his ersatz horror movies. As far as I’m concerned, Saw was probably his high-water mark.
The Conjuring? Insidious? Dead Silence? All competently made, all okay movies, though none particularly scary.
This is mainly because what he doesn’t do quite so well is atmosphere, which is key to a really effective horror movie–Sawonce again being the exception, though that works so well because it’s almost claustrophobic–two guys trapped in a single room–more than anything else.
This is why when I hear about The Conjuring 2, I’m mildly interested, and little else.
And the voice on the recorder? My money’s on Ramona A. Stone.