SpeedFreakCNC 1 Pair Universal Speaker Adapters 6"x9" 6x9 to 6 1/2" 6.5"

Fit my Morel component 6.5" woofers well. They're sturdy and had multiple sets of pre-drilled holes for alignment with various woofer hole patterns/sizes (each woofer screw location has 4 offset holes for different diameters). These were easy to trim to size to remove excess on the outside using a jigsaw and shinto rasp.

These are nice and thick, much better than the Scosche ones. The cutout is just about the perfect size for my 6.5 speakers. Come with pre-drilled holes for the provided speaker screws, and for the mounting locations on the door. No complaints.

This worked perfect for me. I had to drill new holes, but I was prepared for it. I used the old speaker as a template and drilled right through it. Would recommend if you have a drill, would buy again!

So there's not much to it. They are 3d printed. I heard one reviewer complain about that, not sure what they were hoping for. I had some hifonics 6.5 components that fit perfectly. But I was going for some basic grs 8 ohm 6.5 replacement woofers from parts express, as they're far better than the average component speakers. These run a bit larger apparently. I had to slightly enlarge the holes to fit them. I used a spindle sander to do it. I could have sooner enlarged hardwood at twice the thickness. This 3d printed junk is super tuff! They perfectly bolted into my buick century's rear deck. Would have given 5 stars if they would have fit standard 6.5 in woofers. If you plan to do this, YOUR HEAD UNIT WON'T POWER A HEAVY DUTY 8 OHM WOOFER. You will need an amplifier, but I highly recommend that if you want to get loud. Get a class a/b amplifier if you're going for sound quality. Class d is fine for subwoofers.

I have a set of 6.5" Deafbonce Arnolds and these adapters weren't even closed to fitting. As i tried to cut the whole out larger i realized this is printed plastic, which means its hollow inside and super flimsy. the whole i had to make to fit these Arnolds made these absolutely useless. Of course now they will not accept the return.