Hi There, I'm just doing a reality check before I cut into a speaker box. I have an old Flite 2x10, which I'd like to re-fit to Eminence Basslite S2010 neo speakers, to make it even lighter. It's a lightweight composite 2x10 (with tweeter, always rolled off) for bass guitar. Dimensions are 23" tall, 15" wide and 15" deep. It has one 3" diameter tubular port, 8" deep. The speakers now are some old Electro-Voice model. I spoke with Al at US speaker who said the box is on the small side and tuned a little high, and I would do well to cut another 3" tubular port to 1.875" depth. Does this make sense? I just thought it would be wise to get a second opinion before I started drilling. Thanks.