Dayton Audio iMM-6 Calibrated Measurement Microphone for Tablets iPhone iPad and Android
Download the calibration file. Install in Android or Apple flavor of your choice. I use it to EQ my head unit and set gains. It is pretty awesome. And cheap too! Also used to EQ my home theater. The older I get the more I gravitate towards SQ instead of SPL. I run a set of Image Dynamics 6.5 CTX65CS in the front doors pushed with a 150 RMS and they eq real nice. No rear fill. Sound great. But I have also done quite a bit. Dynomated panels that resonated. Mass loaded vinyl to block exterior sound. Added sound insulation in cavities and above the MSL to absorb echoes. Really lowers the ambient noise and helps stops the reflected sound.
