[Brandonx1]

Originally Posted by Hugh-H

Hello,

We have some HDX2 and HDX3 systems that we've deployed in old-style MacPros, Sonnet expansion chassis, and Magma expansion chassis. In some situations the HDX fans come on without a good reason.

Searching the web it seems that some folks are complaining bitterly about it, others are noting nothing unusual. We're capable of analyzing this, so we did temp testing on the cards. They are no hotter, and each individual chip on the board is no hotter, then when they don't come on but for some reason the firmware on the hdx card thinks they should come on.
Summary - the fans are not on because they need to be, they are on because the firmware is not programmed correctly.

Also, the firmware on the hdx card only has two states - fan off or fan on. Fan on is absurdly loud. Every other temp controlled fan has a variable speed fan, the hdx seemingly does not.
Again - the firmware is incorrect.

We do the largest television shows in the US. We are able to move all our noise-producing gear to other areas of our broadcast truck, but the ProTools systems must be in the audio room. The hdx cards' fans coming on at ridiculous volume FOR NO GOOD REASON is not usable. I say "no good reason" because we've PROVEN that - NO TEMP ON THE CARD IS ELEVATED.
THE FIRMWARE IS DEFECTIVE.

Please release a firmware update for this, it's simply bad engineering and is killing our ability to use ProTools. Folks are beginning to wonder where our Nuendo systems are.

Hugh

I agree with you that the fans are loud and probably don't need to be on but they put them there for a reason. Why not buy a iso cabinet. The hdx fans are not so loud that an iso cab couldn't reduce the audible noise significantly.