Grace Design SB-3D11 - 11-Channel Immersive Microphone Array Mounting System (5/8 Threads)The SB 3D11 immersive surround microphone array was developed by Grammy award winning Morten Lindberg from 2L. The array makes a 1 meter cube with a 7 channel array at the lower level and a 4 channel array at the upper level. Due to the size and weight of this array it comes with the SB SMA HD (heavy duty) Stand Mount Adapter. The SB SMA HD can sit on a 5 8 (16mm) baby pin or a 1 1 8 (32mm) junior socket receiver. Spacebar microphone positioning