You have multiple options. For s9s noctuas are the best solution we believe. For the s19s (the one you have) you can put it in a sound dampening box. Our open source drawings attached. Or you built it up with a cloud line fan with steering from Zack Bomsta’s Njord board. My boxes are def. More silent we’re talking 50-60db vs 20db. The foam you see in the pictures is Merford audio and fire proofing double z layered. The pillar is our own creation with a standard Bosch car filter in front.