The RPM181/BI Bidirectional Polar Pattern Capsule by Shure is one of four interchangeable capsules for Shure's Beta 181 side-address instrument microphone. It features a locking ring which provides a secure connection with the Shure RPM181/PRE. Paired with this preamp, its compact design weighs only 5.1 oz and gets close to any source even in the tightest conditions. With its wide frequency response and high SPL handling, it's great for miking dual sound sources such as between toms or acoustic instruments. It can also be very useful as a mono drum overhead or use a pair to create the Blumlein stereo effect. It also performs with little to no crossover distortion and provides exceptional low-frequency reproduction.
The capsule is made with a hardened steel mesh grille that resists denting, wear and abuse. Along with its compact form factor, the diaphragm provides exceptional audio with consistent, textbook-like polar responses resulting in a mic with noteworthy sound and versatility.Interchangeable side-address Bidirectional capsule for the Shure Beta 181
Locking ring provides secure connection between capsule and Shure RPM181/PRE preamp
Compact 5.1 oz design gets close to any source even in the tightest conditions
Provides wide dynamic range and high SPL handling
Performs with little to no crossover distortion and provides exceptional low-frequency reproduction
Hardened steel mesh grille resists denting, wear and abuse