Quote:
|
Originally Posted by lolito_fr
Maybe you are missing the key(?) : The D4 coils are fed with simple square wave AC, all the others are sine wave driven
(apologies if you already knew this!)
|
I knew that most pumps are given 120VAC or 240VAC power, but I was making sure that this was the only reason that the D4 is noisy. I was wondering if it was possible to keep the high efficiency square wave impulse and keep it quiet via mechanical dampening. Not insulation, but sturdy construction or other mechanical designs.
Thank you, though.