Trying to mask high frequency whine from ceiling fan

[Ahwman]

Please forgive me if I’m posting this question in the wrong place. I happen to be hyper sensitive to sound especially when trying to sleep. That said, I recently installed a high end ceiling fan with a dc motor and while the fan itself is very quiet, it produces a constant high frequency (10k) sound while in operation. It’s not particularly loud, however it drives me crazy as the sound oscillates from the air movement of the fan blades and can be heard even while listening to music or watching TV. I’ve read other reviews and this appears to be consistent with this model of fan versus it being a defect. Is there an effective way to either mask or block a high frequency such as this?

Thanks so much...

 

[JackD201]

10khz is probably bearing noise or metal on metal friction. How to deal with that?

 

[Ahwman]

10khz is probably bearing noise or metal on metal friction. How to deal with that?

The sound I’m referring to is present before the motor or fan itself spins upon startup. I theorize that this could be related to how the ac current is converted to dc current. In any case, this seems to be consistent with others who have purchased this model. I’m just hoping there is a way to at least dull some of this (10k frequency).

 

[JackD201]

The sound is coming from the fan itself?

 

[Ahwman]

The sound is coming from the fan itself?

Yes, not from the spinning blades but from motor compartment of the fan itself...

 

[JackD201]

It's probably the transformer or rectifier then. I guess you could pot it but I'd have an electrician do it also I'm not sure if it would bee safe in terms of heat build up. I'm sorry I couldn't be of any more help.

 

[Folsom]

Cold solder joint is also possible. SMPS transformers can make noise like Jack says.

Best thing to do is try to listen to another one or see what parts are available for replacement. Generally any slightly nicer fan you can order parts for, instead of replacing all of it.

 

[ddk]

Please forgive me if I’m posting this question in the wrong place. I happen to be hyper sensitive to sound especially when trying to sleep. That said, I recently installed a high end ceiling fan with a dc motor and while the fan itself is very quiet, it produces a constant high frequency (10k) sound while in operation. It’s not particularly loud, however it drives me crazy as the sound oscillates from the air movement of the fan blades and can be heard even while listening to music or watching TV. I’ve read other reviews and this appears to be consistent with this model of fan versus it being a defect. Is there an effective way to either mask or block a high frequency such as this?

Thanks so much...

So you join a high end audio forum instead of an appliance one to ask a question about a noisy fan? The obvious question is why are you trolling here, can't believe people actually take you seriously. Change the fan!

david

 

[Ahwman]

So you join a high end audio forum instead of an appliance one to ask a question about a noisy fan? The obvious question is why are you trolling here, can't believe people actually take you seriously. Change the fan!

david

How dare me David to ask such a question. I’m so sorry if I’ve offended you by my question. Perhaps you can find it in your heart forgive me...

 

[ddk]

How dare me David to ask such a question. I’m so sorry if I’ve offended you by my question. Perhaps you can find it in your heart forgive me...

What I said has nothing to do with that.

david

 

[Steve Williams]

For me life is too short to worry about that noise. Personally I would have changed the fan a long time ago