Sierra-2 Upgrade instructions with video!

[Mag_Neato]

Gotcha, last time around I had assistance (father in law). I'm guessing its nothing a little Dremel can't handle!

I should have used a Dremel, but one was not handy and my impatience won out. I tried a piece of sandpaper at first but was not making much progress, so I put a flapping wheel in my drill and went to town. That made the opening tapered from the top to bottom so the woofer fit at first, but the opening closed up quickly towards the bottom and I could not get it opened up. I ended up with some scratches and scuffs on the front of the cabinet. I ended up using a utility knife (box cutter) and carving the inside diameter of the opening until the woofer dropped in. Once I'd started the upgrade process I was determined to complete it without stopping! I think the results make up for the slight cosmetic damage I did.