vosk if your miner fans are quiet can you give us firmware of it? everyones b3 is louder than any of the mienrs
You can just replace the fans. Get a low noise high static pressure fan for the push and any low noise decent speed for the pull. The loudest thing in mine right now is the psu (and the actual sound of the computations).
Here's the one I used for the push:
https://smile.amazon.com/gp/product/B00L64NSL2