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COS-11D Omni Lavalier Microphone

The black Sanken COS-11D Omni Lavalier Microphone with Normal Sensitivity and 3.5mm Locking Sennheiser Connector is a subminiature lav mic designed to deliver clear, full-bodied sound and reliable performance, making it a popular choice among industry professionals in broadcast, TV, theater, film, videography, and more. 

Engineered to meet the standards of modern digital wireless microphone systems, the COS-11D is RF shielded to eliminate interference issues and ensure a pristine audio signal. The microphone capsule features a rectangular design that sits vertically, increasing the surface area and allowing this little mic to offer a rich, full sound that outperforms many larger models.

The mic's 50 Hz to 20 kHz frequency response rolls off extreme low end and provides accurate, transparent audio reproduction with a small presence boost in the 6 kHz area for crisp, intelligible speech. With a forgiving omnidirectional polar pattern that picks up sound in a 360° pattern, levels stay consistent—even when the subject turns away from the mic.

A water-resistant mesh screen protects against humidity, perspiration, makeup, bad weather, and other potential on-location issues, while the durable cable is also moisture resistant and built to stay soft and pliable, even after extended use. This version of the COS-11D terminates in a locking 3.5mm connector and is wired for use with Sennheiser transmitters. A metal windscreen, holder clip, rubber mount, and plastic case are included.

Locking 3.5mm Connector

Compatible Wireless Transmitters

  • Sennheiser: Works with Sennheiser bodypack transmitters equipped with a locking 3.5mm connector, including the Evolution (ew), XSW-D, and SpeechLine (SL) Series
  • Also works with many third-party wireless transmitters and portable audio recorders that are equipped to supply 3 to 10 VDC through a locking 3.5mm connector wired for Sennheiser compatibility.

Broadcast-Quality Sound and Dependable Performance

Subminiature Mic with a Big Sound

The camera-ready COS-11D features a subminiature capsule that enables the microphone to be inconspicuous and easily disguised in clothing or costumes. The unique vertical diaphragm design offers a clear and natural sound optimized for the human voice.

Normal Headroom for Standard Speech

This version of the mic features a normal sensitivity setting for standard speech at levels up to 123 dB SPL.

Omnidirectional Polar Pattern

The forgiving omnidirectional polar pattern picks up sound from all around the mic and provides a consistent frequency response, even for off-axis sound. This helps to supply clear, intelligible speech and vocals, even when the talent isn't speaking directly toward the microphone.

Tough, Water-Resistant Construction for Indoor/Outdoor Locations

The water-resistant front mesh screen provides reliable protection from perspiration and moisture, making the mic a solid performer in all kinds of weather. The rugged cable is also built to resist moisture and handling noise and stay pliable, even after repeated uses.