You are trying to put asic miners into stanard server racks, of course it is not going to work properly these arent rack mount machines.
Also, these are industrial miners, they should be in an industrial setting where sound shouldnt matter.
This is super easy to say except that this has become a poor mans game.
Regardless of how they are designed we are still going to find a way to hack around the issue.
This aside, one of the things I was thinking was if you put a vent kit on each of them and then had the exhaust going out the back it may decrease the liklihood of them wanting to suck back in the intakes
Agree that its a poor mans game but this isn't a poor mans solution - unless he inherited these cabinets for free.
These cabinets get expensive fast - $2k-$8k?
I'm still very interested in where this goes. I'd love to see this vent kit your talking about in action.
I run my gpu miners in 4u cases on a rack. Directed airflow with blower cards works very well in my setup.