Sones – unit of how loud a sound is perceived


The sone is a unit of how loud a sound is perceived. The sone scale is linear. Doubling the perceived loudness doubles the sone value. In acoustics, loudness is the subjective perception of sound pressure. The study of apparent loudness is included in the topic of psychoacoustics and employs methods of psychophysics  <wikipedia>.

GOOGLE DEFINITION: What is a sone?
A sone is a measure of loudness. The higher the sone rating the louder the sound. Understanding how loud an exhaust fan will be can be difficult, largely because bathroom exhaust fans are measured in sones, while most common noise levels we are familiar with are measured in decibels.

Their are other factors that can effect the perceived sound level: wind direction, humidity, moisture, air movement including volumes of air moving through in this case the active ventilation.

By |2018-02-22T16:24:30+00:00March 18th, 2015|

SolarRoy Product-Line..

SolarRoyal specializes in energy efficiency solutions and products. Our primary product being our modular SR1800 Series Solar Attic (Ventilation) Fans. We are constantly improving our products, components but at the request of our partners our product line has grown significantly:

SR1800 Premium Solar Attic Fans.
Solar Gable Fans.
Solar Fan Accessories.
Premium Insulated Attic Staircase
  (Hatchway) Covers.

Whole Home Surge Supression.
Attic Insulation Removal Bags.



• "We have a product that is by far the best solution on the market."
• "Smartest and well thought-out product we have ever used. Easy to install and offers the best value & quality."


Hands down, these are the biggest compliment we can get and the SolarRoyal team members are industry leaders in bringing the best sales and support together. We offer partner training events, trade-show support or customized bids support. OUR SALES TEAM & PARTNERS ARE THE VERY BEST!