For sufficient cooling, we strongly recommend that you leave at least 1/2 rack unit space above the Videohub unit. This modification includes an upper panel with pre-installed fans for easy installation, requiring the user to remove the old panel and fans from the Videohub and adding our modified panel by plugging the fans into their corresponding connections and reinstalling the top panel. The fans cool the internal temperatures to the same temperature as the stock fans, but with a reduction in noise. The Quiet On Set Kit was built specifically to allow 12 volt powering of the videohub and to reduce fan noise. Quiet is achieved by adding two 14 dBa (between breathing and whisper level sound level) fans with fluid dynamic bearings to an all-new top panel built by NEBTEK. It also makes the video hub a 12v dc powered device! If you need to work on set near microphones that hear everything we can reduce the sound level of the fan. The Black magic 20x20 and 12x12 Videohubs have fans that are quite normal for rack mounted equipment. Earlier revisions of the BMD videohub did not have a fan of any kind.
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