How to Protect a Wisycom MTB40S Transmitter on a Film Set

In this article

• Why does a Wisycom MTB40S need extra protection on set?
• What's the fastest way to protect it?
• How does the case handle battery and settings access?
• Bare transmitter vs pouch vs case
• FAQ

The fastest way to protect a Wisycom MTB40S plug-on transmitter on a film set is to fit it with a rugged protective case once, for good. A hard flight case is good for the gear bag between jobs, but it does nothing once the transmitter is clipped to a boom pole or mounted on set. A form-fitted shell, like a CrabShell case, is built to stay on through daily use while still giving full access to the battery door and the settings. This matters most for the people who handle this transmitter every day: boom operators, sound mixers, and the rental houses that keep it moving between bookings.

Why does a Wisycom MTB40S need extra protection on set?

A plug-on transmitter sits right in the middle of the action, often mounted on the boom or fitted directly into the mic holder, which means it takes the same knocks and bumps as the rest of the rig during a shoot day. It's also handled constantly during quick mic swaps, so it doesn't spend most of its working life tucked safely in a bag the way it does in transport.

For rental companies in particular, the same unit goes out with a different crew on the next booking. Keeping it in a case that's already fitted means less time spent inspecting and repackaging gear between jobs, and a transmitter that looks and feels consistent from one hire to the next.

What's the fastest way to protect a Wisycom MTB40S transmitter?

A hard case like a Pelican or an SKB is built for transport, not for the hours a transmitter spends mounted and working. What protects the unit during use is a form-fitted shell that's fitted once and stays on for good.

The CrabShell Protective Case for Wisycom MTB40S Plug-On is a rugged, bouncy TPU cover built to endure tough conditions, with easy, quick access to the battery door and settings. As CrabJuice puts it: put it on, leave it on.

How does the case handle battery and settings access?

This is the detail that matters most for daily use on set: the case is designed with easy access to the battery door and the control buttons, so you never have to remove it to swap a battery or adjust a setting. That's what makes it a one-time fit rather than something that gets put on and taken off between jobs, which is exactly when it would stop getting used at all.

It's also built to be lightweight, so the added protection doesn't change the feel or balance of the transmitter on a boom pole. For a boom operator holding a rig overhead for a full shoot day, that difference is worth noticing.

Bare transmitter vs pouch vs case

Setup	Stays on during use	Battery access	Setup time
Bare transmitter	No protection either way	Full	None
Generic pouch	No, comes off to use the unit	Must remove pouch	On/off every use
Hard flight case	Only in transport	Full once unpacked	None
CrabShell case	Yes	Full, via battery door	Once, ever

Frequently asked questions

Can I leave the case on while I change batteries?

Yes. It's designed to go on the first time you get it and stay there. The battery door stays easy to reach through the case, so you never need to remove it to swap a battery.

Is the case waterproof?

No. It's not waterproof, but it is more splash resistant than an unprotected transmitter.

Which Wisycom transmitter is this case designed for?

This CrabShell is designed specifically for the Wisycom MTB40S Plug-On transmitter.

Does the case add noticeable weight or bulk?

No. It's built as a lightweight cover, so it adds protection without adding meaningful weight to the transmitter or the boom pole it's mounted on.

Between the case going on once, the battery and settings staying reachable, and the weight barely changing, the goal is simple: stop thinking about the transmitter and get on with the shoot day.