The front was fairly challenging, in that to keep things semi-airtight, my usual slapdash construction wouldn't do. But what the hell, it had gotten me this far. The main pickle was the fact that I needed a solid core door, and I couldn't find one less than 80” high and all the space I had to play with was 76". However, I did find one that could have two inches trimmed from there top, and two from the bottom without damaging the core. This was cutting it close, but I figured I could make up the difference, by cutting out a door-shaped hole in the bottom of the frame. As it was thoroughly summer by this time, I wasn't worried about disturbing any groundhogs, their shadow should've been vanquished by now. I opted for a variation of the superdoor design mentioned in Rod's book , but using a soundproofing composite instead of the lead sheet since this is mostly for vocals/acoustic guitar, and shouldn't have that many low frequencies to worry about. ...