Provided are a sound generation system and a sound recording system, which are placed in a room to adjust sound. An example method disclosed herein identifies a current boundary of a static data region in memory, and sets a lower boundary of the managed heap at an address located a safeguard distance above the identified current boundary of the static data region in memory. The leading edge cavity step forms a rampless air bearing surface proximate to the trailing edge of the slider which is adaptable to form a ramp to pressurize a protruding surface of a transducer portion of the head. That voltage is the motor or winding’s corona inception voltage.