Originally Posted by nemoreborn
i want to buy a SPL meter .. any model suggested ???
Not sure what you mean when you post: "if i buy it brand new ?? cm-130 good ???"This is the model I use.
Very, very happy with it. I have several models, including the discontinued digital Radio Shack model that's so popular but after trying four sound level meters this is the one I settled on.
I went with this model because I wanted better then what Radio Shack had to offer. With this unit you have a Type 2 standard as opposed to an unrated Type 3.
The recently introduced digital Radio Shack model is much better featured so you'll have to ask others who might have purchased it if they're happy with it. The old version is discontinued and Radio Shack's website shows that it's no longer available.
As to calibration, for what ever reason, calibration devices are very, very expensive. This is the calibration device
I use. I found it to be the best priced calibrator that I could find. A simple to use appliance that outwardly, seems to be grossly overpriced. Maybe someone else can explain why sound level meter calibration devices are so expensive because in that regard, I'm clueless.
Calibration consists of simply sticking the calibration device on the end of the sound level meter, turning the sound level meter and the calibrator on and then using a small flat tipped screwdriver to twist the sound meter's calibration potentiometer screw, match the sound meter display panel information to the the SPL being generated by the calibrator and voila, instant calibration. Turn everything off, put everything away and your sound level meter is now calibrated.
Hope the above helps answer your question.