Hi Beffje,
Can you show us how you setup the tube - I am trying to reduce the sound from my S7s - the neighbors are complaining now :-(
Thanks
TMT
I put a piece of foam in front of the intake. Before I did that the miner was running at approx 75 Decimals
https://www.dropbox.com/s/tma3fwh1lk5bym3/20151114_181306.jpg?dl=0After It is down to 59 Decimals here is a screenshot of the temperature. The miner is sitting in a garage with 6 other miners going.

Won't this cause the miner to run even louder since you are blocking the intake temperature?
This is the cheapest way I found to dampen the sound without buying expensive sound insulation foam or mufflers.