Cutting out baffles for Rainbow SLC's 6.5"

[Trepkos 10+ year member]

Heres the specs but Im confused on the size of the whole.

Specs

There are two numbers, Installation and fastening and I am not sure which one technically should be used as the judging variable in cutting the hole of the baffle.

Anyone know?

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[bamaboy 5,000+ posts]

im assuming installation is the woofer cutout and fastening is where the screw holes go around

 

[B_Rad_NC 10+ year member]

Measure the back of the speaker and figure out the cutout size and cut a hole. If it doesnt fit sand it out till it does. thats what i do. To get your screw placement correct what i do is put 4 screws (or however many used for mounting) in the screw holes (not on the baffle, on the place where its to be mounted) and coat the tips of them with white out. Press your speaker and baffle onto them in the position you want it mounted, and pull it off and now you know where to drill.