Helped me dial in the crossover point to my subwoofers. Never was a believer of dsp until I tried it myself. Always thought the least alterterd signal has got to be the best. But that is only true if the room is well built, designed, and tailored to your system. Now I've used it to get a better response curve in the car and hope to incorporate it my AV installs at work.

I learned about this microphone while trying to optimize the frequency response of my stereo system.Then I asked my self which bothered me more: the frequency response, or all the frequencies I couldn't hear because they were masked by household noise?Between HVAC systems, range hoods, bathrooms fans, refridgerators, computer fans, and other appliances, homes are awash in noise. Sadly, it is difficult to get any kind of reliable comparisons on expected noise, even with long web searches.For example, I found a web site with noise ratings on dehumidifiers. They even described their methodology for testing. I tried a couple of the systems they had rated. To my ears, the noisier of the two was QUIETER in my home.Clearly, I needed some way to come to grips with all this noise.Turns out this microphone is an ideal tool to do just that.I'll use the dehumidifier example again. I measured both units with this microphone and REW (Room Equalization Wizard) software. I was able to replicate the numbers from the review website by following their placement notes. Then I was able to move the microphone closer to where I would be hearing the units.Sure enough, the overall RMS loudness matched the review site. BUT this microphone with REW showed thath the QUALITY of the noise of the unit that was louder to me had much more sound in the frequencies where most of my music and best hearing is!So, this tool is great for getting a grip on noises around the house. I will continue to use this to measure things like heating and ventilation fan and compressor noise, or appliances. It will be great to hook this up to a laptop, go to a appliance store, ask to have their quietest refridgerator turned on, then MEASURE the volume AND quality of the resulting noise!Maybe when I'm done with that I can use this to take a look at frequency response...

Great affordable microphone for measurements

This sound calibration tool measures down to 10hz, I have tamed many rooms using this tool with REW-software. This is a must in any audio engineers mic locker.

I purchased for setting up multiple subs with a minidsp from the same company. Must have for someone who wants the most from their home theater.