This is a solid mount for the Sonos Arc. The assembly process consists of taking the TV off the wall, detaching the current TV mount from the back of the TV and essentially reinstalling it along with the speaker mount. Sure it's not hard, but maybe not the easiest task to do on your own if you have a big/heavy TV. Attaching the speaker was also relatively easy. Two screws held the bow firmly to the bracket. A bonus is that you can adjust the depth of the speaker (how far it sticks out from under your TV) to make the most of the Arc's upward-firing speakers. My TV/arm is on a fully articulating mount so there is some wobble when you move the TV, but it's not the kind of wobble that you have to worry about falling off.
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