YOUR GOING TO BURN YOUR HOUSE DOWN 
'your going to shoot your eye out'
[ Enclosed 1200Watt heaters in a home are an arsonists wet dream ]
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Well honestly, just go to KMART or WALMART and buy a bunch of 18" chinese fans for $20 each, and plug them in, and blow all the air out to where your wish,
Problem is sound enclosure your S-9 sounds like a jet engine, and so you would need 2feet of fiber-glass to muffle the sound, but to pass the fresh air in with the fans, you would need an open hole, where the jet engine sound would get out,
Seriously, what I do in this case with D3 & S9 I put them out in the chicken-house, err motorcycle-shop, and have a wifi-bridge talk back to the main-house, this stuff really needs to be OPEN,
I never put an enclosure on kind kind of miner, sealed or GPU, even a GPU card in a box, needs to have the cover removed, soon as you ensclose this shit it goes from 60C to +80C, best to run under 68C for long equipment life,
The ANTIMER BITMAIN shit is jet engine LOUD 90DB, U really need farm property, or an industrial setting to run this shit.
Some guys enclose them in boxes in their garage and exhaust, but still its awful loud and if you got neighbors your screwed
A walk-up attic with good insulation would work
Personally what I do with ALL miners is use commercial restaurant racks that are stainless and open grates, on each level have the 2ft kmart chinese fans blowing air sideways and in front of each gpu or s-9 have smaller 12v fans, these fans need 100ma, thus if you got 10 your pulling a full amp, and need proper power, most people just go to the junk yard and get old cpu power supplys, or hell buy a new one at frys for $10, the little fans can be had for $3,
But having the big 2ft/120cm box fans blow sideways on each level of rack is really critical
SOunds like your problem is a NOISE problem, and the main solution there is an external garage or chicken coup, or hell dig a hole and do an underground rig, thats what we do at BURNING-MAN we dig a hole bury the gas generators and you don't hear shit, lots of ways to contain sound.
But you don't want an enclosure unless you can MOVE massive volume of air, as you just asking for a HOUSE FIRE, ... IMHO
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Summary power supply, just get used cpu, or buy cheap new, say 300w for $10, put a paperclip on the cpu connector so it turns on ( see internet )
I would not use mobile or common 1amp pwr-supply, they're not designed for fans, use a real cpu pwr supply so you don't have a FIRE
cpu power supplys have cooling and automatic shut-off, you need this,
You really need to fuss with ARDUINOS and learn how to control stuff these days, all the stuff you need can be got from an arduino kit relays and such so you can control your cooling/sound proofing over the internet with an arduino/rasberry-pi controlling your miners with a double-pole relay for each 30amp miner on 220v
