I used these for a whole house audio system and thought they might be overkill but the sound is very good and they are relatively efficient speakers that do not need a lot of power to drive them. One caveat is that they are designed for a small home theater setup and for a 45 degree sound dispersion so for larger rooms a single speaker is not going to be satisfactory.
Although the speakers are 6.5" in diameter they need a larger 7-7/8" cutout for installation. I was having to make holes in both sheetrock and tongue and groove for the ceiling mounts. Sheetrock is easy even if a bit messy so I was glad to be able to use my Hole Pro adjustable hole cutter (no one makes a 7-7/8" hole saw anyway and with a jab saw it is easy to cut something you did not really want to cut) with its shield that catches all the dust and enables me to limit how deep it cuts as well.
I used the tungsten blades on the sheetrock and switched to the high speed steel blades for the tongue and groove ceiling areas and was able to make the 18 holes in under an hour. I used the 9" X-230 model that is my go to tool for recessed light cans as well though they make larger versions including a 2-12 inch model we use for installing 8" ceiling and wall speakers.
Hole Pro X-230 Kit: 1-7/8" to 9" Infinitely Adjustable Twin Blade Hole Saw Cutter 3" 4" 5" 6" 7" 8" 9" Hole Wood Sheetrock Plaster Fiberglass Plastic MDF Cement Board. Use ¼ Torque of Hole Saw to Cut Twice As FastGet more detail about JBL SP6CII Round 6.5" In-Ceiling Speaker.
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