HUMIDITY

Not only does humidity affect equipment but humidity, and temperature, also affect the acoustic envelop in your listening space ( a 10% swing can dramatically change the reverberation field by messing with the response of the higher frequencies which provide much of your spatial cues ). Concert halls are generally designed with HVAC systems that can easily ( and quietly) produce constant temperature and about 50% humidity with any and all crowd configurations.

fifty/fifty always sounds and works best.
May 50/50 save you
Praise the 50/50
Oh My 50/50!

Is it safe to assume that all above posts were talking about relative humidity?