DPA Microphones APE Series Acoustic Pressure Equalizer Ball for 4006 Omni Mic

Designed for measurement and critical recording applications, this sphere-shaped acoustic pressure equalizer corrects the free-field frequency response of omnidirectional condenser capsules. The equalization ball addresses the natural acoustic shadowing that occurs when a microphone body disrupts the sound field, restoring flat response characteristics essential for laboratory-grade measurements, outdoor acoustic surveys, and concert hall documentation.

The spherical geometry provides uniform acoustic loading across all angles of incidence, making it the standard choice for sound level monitoring, architectural acoustics work, and matched-pair stereo recording where spatial accuracy cannot be compromised. It integrates directly with both single-microphone and stereo kit configurations used by acoustical consultants, broadcast engineers, and field recordists who demand verifiable measurement-grade performance.