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Originally Posted by Cathar
Yeah, the MD30 motor doesn't even hum. You just get the turbine whine sound which really drops in volume the moment you put some restriction on the pump (attach it to a block).
When inside my MDF radbox I couldn't tell that the MD30 was on at all. If I turned everything else off in the room and listened, and then turned off the MD30 you could then tell that the room got quieter, but I had trouble distringuishing "why", as the MDF box basically converted the pump's whine into background white noise.
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Ahhh hhaaaa. Once again you are the man I want to talk to!!! I am in the process of building my rad box. You used MDF. Is that because it has the best sound blocking/absorbing properties? Or is there another wood you would recommend? Got any pics? What are you doing to keep the pump cool?
And Maxx sorry for the thread jack!