Sorry, long time no update. I got pretty busy and I'm preparing for a trip overseas (and also I'm leaving this weekend!). But here's a quick update: 1. I finally had time to completely retweak the housing shells for what I find to be the "best" compromise in terms of distance/soundstage/frequency response, etc... (I tried somewhere between 15-20 different variations since the last shell design) 2. Being that I'll be overseas for 1.5 months without any way to print and send out the new shells to others to try, I'm going to upload the .stl files now. Please check top of first post! 3. Yep, that's right, I'm making the files available so everyone can print their own shells and play with them! I can start printing again and send the shells over to friends whenever I get back. Will still send out some shells for friends that have been waiting for me. I do apologize for the lateness! Didn't have much time to design a better pair of grilles... (nor will I have time to send them out), so also uploading the best ones I have right now. And here's obligatory frequency response measurement with the new shells: Won't take much to get to this with the new shells. I got this with just the middle layer of medical face mask and the Brainwavz Hybrid pads.