The problem is that even if you mine at subzero temperatures and the miner itself runs cool not needing high fanspeed, the PSU that's built into these still runs its fans flat out and they're those horrible little 40mm fans. Nothing can quieten that part down no matter how low speed you run the miner.
Yea, you could run off an desktop atx which is "home friendly" but the sound of 120mm's will still be loud at 30% then you're downclocking considerably.