Shure RPW118
The RPW118 is Shure's factory replacement cartridge that turns a Shure wireless handheld transmitter into a Beta 58A. It is the complete acoustic front end: the supercardioid dynamic capsule, its housing assembly, and the matte grille all in one screw-on unit, so a worn, dropped, or dented head can be renewed to Beta 58A performance without replacing the whole transmitter.
The Beta 58A element brings a brightened midrange presence peak tuned for vocals and a tight supercardioid pattern that rejects off-axis sound to control feedback and monitor bleed on a loud stage. It threads onto compatible Shure wireless transmitters in place of the existing cartridge.
| Type | Replacement wireless cartridge (dynamic, moving coil) |
|---|---|
| Capsule | Shure Beta 58A |
| Polar Pattern | Supercardioid |
| Frequency Response | 50-16,000 Hz |
| Finish | Matte black grille |
| Replaces | Cartridge, housing assembly, and grille |
| Compatibility | Shure wireless Beta 58A handheld transmitters |










