70 is the line. Anything below that will never cause damage.
Above that depends on how long the exposure is. A hair dryer is ~90db. For a several min that’s not realy a problem. 125db is jackhammer range. That could be okay for a couple seconds, probably not 20 seconds.
70 is the line. Anything below that will never cause damage.
Above that depends on how long the exposure is. A hair dryer is ~90db. For a several min that’s not realy a problem. 125db is jackhammer range. That could be okay for a couple seconds, probably not 20 seconds.
Thank you!