Unless granny is hard of hearing that is.
You don't, in fact the Owner's Manual states that the calibration adjustment is for service techs only. You could probably do it yourself, but you'd need to buy a calibrator that costs probably close to 10 times what the meter does and then find an appropriate adapter to fit the Radio Shack's mic. If you need calibrated readings then you probably should actually look for a calibrator and better meter. FYI, if the events are soon, make sure that the meter has a chance to acclimate before making measurements, taking the meter right out of a warm storage area or car to make measurements in the cold will result in errors.Since I seem to have lost the search function over at PSW, can someone here tell me what I need to do for caliberating it? First off, does it come calibrated? (I'd be a little leary trusting it straight from the factory) How do I go about calibrating it?
It depends, at concert levels C-weighting should be a better representation of the perceived level for the audience. However, the vast majority of hearing loss and community noise codes are written around A-weighting and it appears that Chicago's noise ordinances do use A-weighting. So it then probably becomes a matter of whether you're measuring for the bands and your use or for community noise or public safety compliance purposes.And I've been reading up on the different ratings. But one last question on that. I've got a pretty good grasp on what each of the ratings is for, but which do you normally use in a concert-environment? I've heard of engineers using both C weighted (which makes sense, since it's more for loud music*), but I've also heard of people using A weighted measurements. Which would be beneficial for a concert downtown outdoors?
* broad generalized statement. Too tired to get complex.