A:AnswerPut you speaker on the mount then hold them up to Mark where you’ll drill. Every speaker is a different size so just saying 4” down might be to close to the ceiling when speakers are attached.
A:AnswerYou will have to do the same thing I had to do. There is hardware included to mount a bracket on the back of the speakers. I have Sony rear surround speakers. They are light enough to mount on the wall. Try to anchor to a wall stud!
A:AnswerNot sure. They are universal mounts for either two hole or one hole on back of speaker. I have Sonos One Speakers that I used them on. Sonos are one hole mount on back of speaker. They turned out AWESOME! Easy to mount and look great! I picked up the cord covers too so they hid and trim up the look perfectly.