SPL METER? ATI OR RADIO SHACK

I have both of the RS models, I currently only use the analog one as the dog ate the digital one, and it is kind of pointy to use.... It does still work though!

The analog is more useful to me since I can get a better sense for the relative rate and amount of change in db during a test. It is the same reason auto makers finally backed off on digital dash guages. They just don't convey the data as usefully.

I played around with the RS meter and the Rives CD. It was a lot of work, and hard to be sure of results.

So I went looking for a spectrum analyser. Couldn't find one for less than two grand...until I stumbled over the Behringer DEQ2496. The spectrum analyser is much better and easier to use than the meter/test disc, and the equalization function, if you want to use it (and you will) effectively fixes room resonance problems.

It will cost you about $350, including microphone. Worth every penny. Take it from one who has lots of experience with the RS meter.

I think that the RS meter was never intended to calibrate audio systems. It is a good tool for measuring how loud your neighbor's lawn mower is, or how noisy his party is at 2AM.

RS rules. It is the industry standard.

If you're seriously interested in your room's acoustics I'd suggest that you invest in a copy of the awesomely powerful ETF 5 acoustic measurement software. It runs on any Windows PC with a duplex sound card. ETF can do frequency response measurements of your speakers down to 1/12 octave divisions, MLS measurements, RT60 measurements, and a lot more. Like those cool waterfall plots in Stereophile's speaker tests? ETF can do those too. You can use the RS SPL meter as a microphone and the author of ETF can supply a correction file to offset the RS meter's known inaccuracies. For only $150 ETF 5 is a steal.