My pair of 3.7 just arrived at the dealership. I got the aluminum frames. I will place them on Myesound stands equipped with Stillpoints OEM feet. HiFi Tuning Gold fuses will replace those supplied by Magnepan. The 3.7 replace 3.6, which were bi-wired. No provision for bi-wiring the 3.7, but I'll attempt to use both runs at the single pair of inputs. Most of the installations I've seen place the tweeters inboard. Mark Winey recommended that do so. I had determined the 3.6 worked better with tweeters outboard, possibly because the tweeter was so much faster than the midrange panel.