A specially designed low pass filter sets the -3 dB hinge points at 30Hz and 8kHz with a +10 dB peak from 50 Hz to 80 Hz. The response rolls off at 8kHz, which helps control unwanted top end \"noise\" inside the drum, while keeping frequencies critical to kick drum harmonics found when the beater meets the drum head. The microphone provides a 600-ohm balanced output and can handle over 150 dB of SPL.

Company founder, Bob Heil, made a decision to develop a microphone for the kick drum after talks with many of today\'s top drummers and sound mixers. Explains Bob:

\"The kick drum is arguably one of the most important instruments on stage or in a studio when it comes to micing. It is a tricky beast. Just because a microphone shows specs that favor low-end reproduction doesn\'t necessarily guarantee good results. The feedback that I received from the pros as well as my own research, confirmed that a microphone can and needed to be developed for this purpose. The PR 48 is the end result and I am very proud of it.\"

Originally featured as a part of Heil Sound\'s HDK Series drum microphone kits, and now offered as a stand alone product, the PR 48 has quickly become a favorite of top drummers and sound engineers.

B-52s drummer Sterling Campbell, Eric Kretz (Stone Temple Pilots), Fred Eltringham (The Wallflowers), Jeremy Stacey (Sheryl Crow) and Tool\'s sticksman Danny Carey are all pounding their kick drums using the PR 48 in concert. Alan \'Nobby\" Hopkinson, front of house (foh) mixer for Tool had this to say:

\"The new PR 48 is killer, absolutely loving it, I actually cut right back on the sub bass harmonizer I\'ve used for ever on the kicks, as your mic is giving me all the low end I could ever need, and indeed the system can handle.\"