Shure RPM53B/O-MDOT – Replacement Boom Arm for TH53, Black, Microdot

Product Overview

The Shure RPM53B/O-MDOT is a genuine OEM replacement boom arm for the TwinPlex TH53 subminiature headset microphone, designed for broadcast, theater, and live speech professionals requiring exact-match replacement parts. This black-finish boom arm terminates in a Microdot connector, providing compatibility with a wide range of wireless bodypack transmitters that accept the Microdot interface. When a TH53 boom arm is damaged or worn, the RPM53B/O-MDOT restores the headset to factory specification without compromising fit or audio performance. It is the manufacturer-recommended Shure TH53 Microdot boom arm replacement part for professional production environments.

Product Description

The RPM53B/O-MDOT retains the TH53's innovative clutch adjustment system, allowing technicians and performers to reposition boom arm length and pitch quickly with a simple knob turn — essential for fast changeovers in theater, broadcast, and live event production. The black finish matches TH53B headset variants for a consistent on-camera or on-stage appearance. The Microdot connector is one of the most widely adopted interfaces for professional wireless bodypack transmitters from major manufacturers, providing broad compatibility across mixed-brand wireless systems. The 1.6 mm cable maintains the dual redundant ground construction of the original, delivering a secondary RF shield in high-density wireless environments. See also the Shure RPM400LEMO TwinPlex Preamp if your system requires LEMO3 output.

Key Features

• OEM Exact-Match Replacement — Genuine Shure replacement boom arm built to the same specification as the original TH53 component for proper fit and performance without modification.
• Microdot Connector — Terminates in a Microdot connector, one of the most widely used interfaces for professional bodypack wireless transmitters, supporting broad system compatibility.
• Clutch Adjustment System — Preserves the TH53's clutch-based boom arm mechanism for rapid length and pitch adjustment with a simple quarter-turn knob, minimizing transition time between performers.
• 1.6 mm Dual-Redundant Ground Cable — Secondary ground connection provides additional RF shielding for clean audio in environments with dense wireless traffic.
• Black Finish — Color-matched to TH53B black-finish headset variants for consistent on-camera and on-stage appearance.
• Switchable Sides — Supports left- or right-side deployment to accommodate different performer preferences without additional hardware.
• Paintable Cable — The 1.6 mm cable accepts paint for additional concealment in costumes or under hair, consistent with professional theater and broadcast staging standards.

Typical Applications

• Broadcast studio
• Auditorium
• House of worship
• Government space
• Multi-purpose room

Technical Specifications

Frequently Asked Questions

Is this a genuine Shure replacement part?
Yes. The RPM53B/O-MDOT is an official Shure OEM replacement boom arm, manufactured to the same specification as the original TH53 component.

Which headset is this compatible with?
This boom arm is designed exclusively for the Shure TH53 TwinPlex subminiature headset microphone and is not cross-compatible with other Shure headset models.

What transmitters accept the Microdot connector?
Microdot is a widely adopted interface used by many professional wireless bodypack transmitter manufacturers. Verify your transmitter's input connector before ordering, as connector adapters may be required for some systems.

Can I switch the boom arm from left to right side?
Yes. The TH53 boom arm design supports switchable left/right deployment for different performer preferences or costume configurations.

What warranty applies to Shure replacement parts?
Shure replacement parts are covered under Shure's standard limited warranty. Contact Shure support or your authorized dealer for regional warranty terms.