I am an absolute novice but have enjoyed reading many of the posts on the forums over time. I have recently acquired a BFD (1124) but at this time do not have a mike. Given the number of apps available for the iPhone that measure sound pressure levels can I use these as a starting point to try and use the EQ capabilities of the BFD for my subs. In what I have read I would likely be using DB C weighting and would I need to make any adjustments to my readings. Any help or comments would be appreciated.