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Originally Posted by migueld
BTW, I went through 2 DDCs 18w and both were loud, at least by SPCR standards.
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Proper pump mount is a godsend, when we consider the noise. My DDC 18W version is mounted on antivibration rubber mounts in 3.5" cage and bottom cage side is covered with the AcoustiPack foam blocks (with the anechoic surface) just beneath the pump itself. They are absorbing the pump noise, additionally. Of course, there is just enough clearance so that pump can cool itself properly. Honestly, I have a hard time to tell when it's on - even at full throttle.
If you are adventurous enough, you may also build the custom "noise cancellation" box for the pump
