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Brians256 · 05-19-2006, 01:38 PM

You are going to have a really hard time making the D5 quiet if it is like mine. The pump produces a whine that transmits very well through water. In order to really get rid of the noise, you need to change the motor controller board in it to use modified square waves. I tried many different methods and found it a lot easier to just buy a DDC.

05-19-2006, 01:38 PM	#35
Brians256 Pro/Staff Join Date: Oct 2001 Location: Klamath Falls, OR Posts: 1,439	Re: A challenge! You are going to have a really hard time making the D5 quiet if it is like mine. The pump produces a whine that transmits very well through water. In order to really get rid of the noise, you need to change the motor controller board in it to use modified square waves. I tried many different methods and found it a lot easier to just buy a DDC.