Post 1000 congrats! I can't believe I'm quickly approaching 2000.
If I understand it correctly it seems like you will be pulling the speaker wire to the face of the soffit/wall your showing on the picture there. I would suggest that once you have the location of the speaker down, definately put a 2x6 or wider piece of lumber, flat towards the sheetrock the width of the stud area. This way once you pull the wire thru you will have plenty of area to mount the speaker to, be it a screw, mount, or bracket.
If I understand it correctly it seems like you will be pulling the speaker wire to the face of the soffit/wall your showing on the picture there. I would suggest that once you have the location of the speaker down, definately put a 2x6 or wider piece of lumber, flat towards the sheetrock the width of the stud area. This way once you pull the wire thru you will have plenty of area to mount the speaker to, be it a screw, mount, or bracket.































