How To Enlarge Speaker Box Holes - Best Professional Video

This is ONE way to enlarge your speaker box hole. Total enlargement will be exactly 1/4" added to the diameter (1/8" added to the radius because we will be removing 1/8" of material all the way around). There are at least two other methods using two completely different router bits than the ones I used. One way is to use a Rabbet Bit with a specially selected bearing and do two passes similar to the ones in this video to take 1/8" off, and the other way is to use a specialized bit which removes 1/16" of material at a time, again doing two passes to first cut a lip and then do the final cut.

I used my method mainly because I did not want to wait for a Rabbet Bit to ship to me from Amazon. I could have used the Rabbet bit method to take off 1/8" or the specialized bit method to take only 1/16" off, but I wanted this done today.

If you want to use the Rabbet bit method see this video: How to Enlarge Speaker Holes the Easy...

If you want to see how to use the special bit method to take off only 1/16" then watch this video: [HOW-TO easily RESIZE a SUBWOOFER CUT...

To use MY METHOD which is shown in this video, here are the 1/4" collet (1/4" shaft) tools you need, although you can use other brands:

Makita Model #RT0701C 6.5 Amp 1-1/4 HP Corded Fixed Base Variable Speed Compact Router with Quick-Release
https://www.homedepot.com/p/Makita-6-...

RYOBI Roundover Router Bit Set (4-Piece) - You will be using the 1/8" bit.
https://www.homedepot.com/p/RYOBI-Rou...

Bosch 85680MC 1/2" x 1" Trimming / Cutout Straight Trim Router Bit - MAKE SURE YOU BUY THE TOP BEARING BIT, not the bottom bearing one which looks identical except the bearing is at the bottom.
https://www.amazon.com/Bosch-26109305...

If you want to watch ORIGINAL VIDEO which shows the method I used (although it is a really crappy and unprofessional video) then here it is here: How To: Make Your Speaker Box Hole La...