Need to flush mount a 3" speaker? (1 Viewer)

[Curt Badry]

I am building a set of Spires towers and center channel from CSS. They are a 3" driver and i need to flush mount them. The manual on the CSS website states that the driver hole be 3" and the total recessed hole be 3.65". I'm not sure what size router bit to buy. I came up with 5/16? If anyone could clarify this for me it would be greatly appreciated.!
Thanks

 

[GrahamT]

There will be frequency response problems if you dont flush mount, but I didnt and I cant hear anything obvious with the TB 871s. You will need to router the inside of the baffles to make room for the leads and to let the driver breathe. I used a 3/4" round over bit and it worked great on 3/4" oak. To recess the driver you can use a rabbeting bit.

 

[Dave_Gib]

I use a circle cutting jig, and the size bit that the jig is set for, I think it's 1/4 inch, just do the outside diameter first and work your way back in at the same depth