After having BMF's V3 mods for a year, I got the itch and decided to dive into mine again; get rid of the jack and do a dual entry cable, fix the stripped cup threads and a few other changes I've been wanting to do. While doing this I noticed how easy it is to lift up the driver from the baffle near the cable terminals and I think I realized the purpose of the four pillars and shock absorbers in the cups, which seem to be to provide pressure on the driver to prevent it from lifting.
But now I'm thinking you could glue the driver housing to the baffle and remove the pillars in the cups. The baffle and cup are pretty sturdy and rigid and don't twist or flex much on their own so I don't think they provide any significant structural support and I can't imagine any adverse effects.
I did notice there was a felt seal between the driver housing and baffle in Tyll's pictures so maybe their intention was to provide some mechanical separation between the driver and the cup and baffle with this design.
I'm tempted to do this as it would provide a consistent seal between the driver and baffle, make working with materials for internal dampening easier, and maybe slightly increase the cup volume? But maybe it's not worth the trouble.
Any thoughts on this? I searched around and haven't seen it mentioned much.
Here are my cups so far, by the way:
Jack and cable entries sealed with plastic epoxy, thin plastic super glued over the cup vents, super glue over hanger mount seams, and all of those small standing posts removed.
I have an HD600 cable that I'm going to solder to the stock internal wires of the driver and I ordered a few different foams from Foam Factory to play around with and some 1" thick polyester fiber fill that's quite loose and easily separates into nice and even thin layers if needed. I did remove the thick paper treble reflector but I'm going to stick with stiff craft felt over the rear of the driver and 840 pads. I was pretty happy with BMF's mods so I don't plan on deviating too much from them for now.
Edited by keif - 7/18/16 at 11:12am