Summary

So my nebula capsule (original version) fans are really loud and the audio volume on the lowest setting is also too loud for my taste.
I use the projector in my bedroom and usually leave it on for the night so the fan noise and high volume were a problem.
This base and top cover are an attempt to lower both, the fan noise and the actual audio from the device.
I would say that it lowered the fan noise by about 30 to 40%.