Sanken COS-11D Lapel Microphone – Sennheiser EW, Black (Reduced Sensitivity, -9 dB)

High-SPL Broadcast-Grade Lavalier Microphone for Sennheiser Evolution Wireless

The Sanken COS-11D Red Dot Lapel Microphone is a globally trusted, industry-standard omnidirectional lavalier microphone designed for professional film, television, broadcast and live production. This version is terminated for Sennheiser Evolution Wireless (EW) systems, finished in black, and features the Red Dot capsule with 9 dB reduced sensitivity, making it ideal for high-SPL and close-miked applications.
Building on the legendary COS-11 tradition, the COS-11D delivers natural, intelligible dialogue with improved resistance to RF interference and moisture—trusted by sound mixers worldwide.

Designed for Loud Voices & Demanding Recording Conditions

The Red Dot (-9 dB) COS-11D is specifically engineered to handle sound pressure levels up to 132 dB SPL, making it the preferred choice for loud talent, presenters, performers and dynamic on-camera delivery. The reduced sensitivity helps prevent distortion and overload while maintaining clarity and tonal balance.
The COS-11D also features a water-resistant front mesh screen, offering enhanced protection against perspiration, cosmetics and humidity, ensuring stable frequency response in adverse conditions such as concealed wardrobe placement or outdoor shoots.

Key Features & Benefits


Industry-Standard Lavalier Microphone
Widely used across film, TV, broadcast, theatre and corporate production.


Red Dot Version – Reduced Sensitivity
9 dB lower sensitivity for high-SPL sources and close placement.


Handles Up to 132 dB SPL
Ideal for loud voices, energetic performances and live environments.


Optimised for Sennheiser EW Wireless Systems
Correctly terminated for Sennheiser Evolution bodypack transmitters.


Natural, Transparent Sound Quality
Excellent speech intelligibility with minimal coloration.


Water-Resistant Front Mesh Screen
Improved protection against sweat, makeup and moisture.


Omnidirectional Pickup Pattern
Consistent audio capture regardless of head movement or placement angle.


Low Handling & Clothing Noise
Designed for concealed mounting under wardrobe.


Black Finish
Discreet appearance for professional on-camera use.



Ideal Applications

Film and television dialogue recording
Broadcast and live production
Reality TV and documentary work
Theatre and live performance
High-output presenters and performers

The Sanken COS-11D Red Dot for Sennheiser EW is the go-to lavalier microphone when clarity, reliability and high-SPL handling are critical.

Product Details (Summary)

Microphone Type: Lavalier / lapel microphone
Pickup Pattern: Omnidirectional
Sensitivity: -9 dB (Red Dot version)
Max SPL: Up to 132 dB
Wireless Compatibility: Sennheiser Evolution Wireless (EW)
Colour: Black
Brand: Sanken Microphones
Series: COS-11D

Why Choose Sanken?

Sanken microphones are trusted worldwide for their precision engineering, consistency and production-proven reliability. The COS-11D Red Dot represents a refined evolution of a legendary lavalier design—delivering dependable performance in the most demanding real-world recording conditions.