Hey everyone, I found out something helpful for mounting speakers inside SF/ASP hilts. We know that for the most part, SF hilts have an ~1.10" ID for the body section. This is ~28mm, which is the usual size of a standard speaker, including the ones sold on shopsaberparts.com. I was having a difficult time mounting a speaker securely inside the ASP sabers I've been working on, and I didn't want to just pressure fit it against the pommel. I rummaged through my spare parts from my previous hobby (nerf modding, hence my name) and found the perfect piece!
1/2" PVC couplers appear to be almost exactly 1.10" or 28mm OD. You can make a sealed speaker chamber by boring out some of one end and gluing the speaker inside, leaving you with fantastic sound and volume, only made better by putting the body over it. It doesn't rattle, there's no danger of short circuits, it's perfect. I would wear a dust mask and eye protection while cutting, as the dust is probably horrible for you and it also just makes a horrible mess. I'm sure there's some variance depending on where you buy it from, but all of the ones I have were purchased from my local B&B Hardware store, and they have all fit perfectly.
These are particularly great if you make a chassis out of 1" bladestock, as you can cut the coupler in half partially lengthwise to make it seat right underneath the chassis, making it even more secure. You could even go a step further and lock it in place with the covertec screw if you wanted to. I will post some pictures here in a bit, I have to do some more testing. In the meantime, MTFBWY!