Here is what i did and it is holding up great... I marked the mounting holes with a punch (a pencil should also work) with the speakers resting in the can... make sure the grills will be straight. Then remove the speaker and use a drill bit a little smaller than the screws you will be using. After drilling the holes screw the screws in without the speakers in place, you don't want to poke a hole in the speaker by accident. AFter that is done you can mount the x-over, NOTE; make sure you mount the x-over on the bottom of the inside of the can, it will be happier there... not falling from the force of gravity, especially during double ups or rough water! I roughed up the inside or the can with 40 grit sandpaper so the foam has a good, clean place to adhere to. let the foam dry, you can trim it up if you like. AFter the foam is dry you can then mount the connectors and hook up wires inside the can, then you can use Spray dynamat on the inside. I taped the edges of the can to keep the Dynamat on the inside of the can, you will get some overspray so be careful. Let the dynamat fully cure! a day or two should do it, don't rush the job. After the dynamat is cured you can put polyfil in the cans and then install speakers. And yes i did put polyfil in my speaker cans and did help with midbass response. I am running a PPI 480 and they scream. You will be happy!
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