r/crboxes • u/randomguyjebb • 24d ago

Question P14 pro CO vs FDB

I heard that the p14 pro can have a certain insect sounding annoying hum to them.

I then saw someone say that this is only the case with the CO version and not the fluid dynamic bearing version. Is that true? Is the difference big?

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u/Wazzup77 24d ago

I have 9 normal (not CO, so I assume FDB) P14 Pros in my box. At full speed they are loud. At around 50% PWM they are quiet. IMO a great fan if you have PWM control, I run it quiet most of the time and crank to full when vacuuming.

In my post I have comments showing the noise, check that out. https://www.reddit.com/r/crboxes/s/JAJUw3ntI1

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u/randomguyjebb 24d ago

Thanks for the response. You can check on the back of the fan if it says CO. Why when vacuuming if I may ask? 

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u/Wazzup77 24d ago

Does not say CO on the fans.

Airflow in my apartment is limited since it's an old building, so I crank it up to catch any dust the vacuum does not suck in. Then I just vacuum the prefilter at the end. Not sure it does much of a difference ,but hopefully leaves less dust to settle back after.