At 01:05 PM 7/15/2008, [EMAIL PROTECTED] wrote: >This brings up a question I have been wanting to ask for a while. > >How many cfm is the fan in the SDR-1000 and what are it's phyisical >dimensions? I ask because their are some very quiet fans on the >market these days for the PC gaming world. I would be willing to >replace the fan in the 1000 with a quieter one if I knew its specs. > >Thanks for any help.... > >Dennis, k0eoo
Along those lines, there is a huge difference in noise level among various models and makes of fans, all with identical electrical and air moving performance. Bear in mind that the acoustic power in the noise is a tiny, tiny fraction of the overall mechanical work being done, so efficiency isn't really a factor. It's more things like the number and shape of blades in comparison to the shape and number of things in the air stream (e.g. 4 blades and 4 way symmetrical grilles are bad...).. all those little vortices being shed off the spinning blades.. Jim, W6RMK _______________________________________________ FlexRadio Systems Mailing List [email protected] http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/
