29 August, Came in today, and was able to intercept the package before my wife was aware of it.. Saved my hearing you know..Put it together..Did a couple of rough air tests just to see what the sounds were like.. First off, don't care for the sound. Reminds me of the English pulse unit I had years ago..Not using phones,so pitch is a bit high, and volume (to me) was lacking..That is a five minutes of assembly commentary... Quick grab of yard stick, 12 inch ruler don't cut it.. Quarter was 12 to 14 inches,may be better with concentrated sound as in earphones,,Dime in the easy 10 inch area, nickel was out there as well. I think in the 14 inch range.. I have a feeling that the depth could pay for this gal in a week on a burned out field.. The sound , I am complaining about, may turn into another Susan Boyle. The seller didn't like the pin pointing,,,I have NO PROBLEM..When I get around to air testing, they will be real numbers, not " didga hear dat?" I am going to make a slider coil cover to protect the coil...Going back to the worked out field,Indian, barber,LC,and shield nickel. What is left?....With a shovel.