NEUMANN SBK 130A

The SBK 130 A sound diffraction sphere slips onto the KM 130, KM 131 (A/D) and KM 183 (A/D) pressure microphones.

While sounds coming from the front-half space are emphasized by up to 2.5 dB between 2 kHz and 10 kHz, sounds arriving from the rear-half space are attenuated by 2.5 dB max in the range above 5 kHz.

It has an inner diameter of 22mm.