Is the S&P Silent series fanupposed to be this loud.

I bought the S&P silent series and I plugged it in. Both High and Low setting on the fan is about 50 DB. WOW. It said it was only 20 DB. this is extremely loud. Is this right? I can record this if anyone wants to hear this.

They normally measure at 3 metres away inside a tent I believe. Don't hold me to that. I don't know any fan that quiet!