The gray Sanken COS-11D Omni Lavalier Microphone for Sennheiseris a subminiature lav microphone 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 tiny 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 3-pin LEMO connector and is wired for use with Sennheiser transmitters. Accessories are available separately and are not included with this configuration of the microphone.

For Broadcast, Film/Video & Presentation    Omnidirectional for Consistent Levels    For Sennheiser Transmitters with LEMO    Normal Sensitivity Level    Rugged 5.9' Cable Stays Pliable    RF Shielded for Digital Wireless    Water Resistant    Small Size is Easy to Conceal    Requires 3 to 10 VDC

• Sennheiser: Works with Sennheiser bodypack transmitters equipped with a LEMO 3-pin connector, including the SK 50-UHF, SK 250-UHF, and SK-2000/3000/5000/9000 models.
• Also works with third-party wireless transmitters that are equipped to supply 3 to 10 VDC through a LEMO 3-pin connector wired for Sennheiser compatibility.

Related Questions and Answers

Q: 1. Is this compatible with UM200c transmitter?

A: This is not the appropriate model. The appropriate version of the COS-11D for your UM series transmitter is the Sanken COS-11D Omni Lavalier Mic, Normal Sens, Hardwired TA5F Connector for Lectrosonics Wireless Transmitter (with Accessories, Black), BH #SAC11WNLUNB. When orderigf for a specific Lectrosonics system, please call 800.6060.6969 and one of our Pro Audio staff will assure that you choose the correctly wired version.

Q: 2. What wireless receiver/transmitter do I need to buy with this to make it work and feed XLR into my camera?

A: Lectrosonics wireless transmitters/receivers typically employ TA5 connections: Lectrosonics SMV Super Miniature Wireless Microphone Transmitter (Freq Block 21) B&H # LESMV21Q Lectrosonics UCR411A - 400 Series Wireless Diversity Receiver (Frequency Block 21) B&H # LEUCR411A21

Q: 3. Hi, whats the length of cable typically on these lavs?

A: Jim: Unfortunately I'm very far from home and my Sanken lav mics at the moment. The length is actually very long. I think it's about 10 feet. If you are worried about the length being too short: don't worry. If you have a very specific need let us know more. I use my mics mainly for interviews so I have the extra wire length gently wound up and clasped.

Q: 4. Hello, what's the difference between this COS-11D and the one with the mini connector ? Both are advertised for use with the Sennheiser EW wireless system, but the mini connector version is more expensive.

A: No accessories will be included with this version.

Q: 5. does this have an adaptor for a 4 pin AT receiver?

A: I do not have an adapter but here is the mic with the 4 pin hardwired. https://www.bhphotovideo.com/c/product/1200538-REG/sanken_san_11danbkh4at_cos_11d_omnidirectional_lavalier_microphone.html

Q: 6. Is this the same connector that will fit the sennheiser G3 transmitter?

A: This Sanken COS-11D (MFR# COS-11D-HWM-TRS-BE) has the correct wiring for the Sennheiser Evolution wireless G3; trs 3.5mm male locking connector.

Q: 7. are there different cable length versions? stated lengths in the Q&A range from 13' to 6'. I would like the version with the longest possible cable.

A: The COS-11D wired for XLR is only available with our longest cable option, which is 3 meters (a little over 9 ft).

Q: 8. Is there an option to connect it to a XLR input camcorder? Also will it work with my phone's 3.5mm headphone port?

A: A Rode VXLR+ 3.5mm TRS Female to XLR Male Adapter with Phantom Power Converter, BH #ROVXLR, will allow you to plug this mic into a camera with XLR input, which would be able to provide 48 volt phantom power to the mic. To connect this to a smartphone, you would adapt the end to TRRS with a Rode SC4 3.5mm TRS Female to 3.5mm Right-Angle TRRS Male Adapter Cable for Smartphones, BH #ROSC4. The smartphone will power the mic in this case.

Q: 9. I found this mic at the video you guys made for Tascam DR-10L Digital Audio Recorder. This unit operates with aaa battery 1.5V However this mic requires 3 to 10V???

A: This is ultimately a question for Tascam. You need to know the voltage provided by the DR-L10. Do not assume it to be the same as the supply voltage.It is true that the COS-11 BP (Belt pack) runs on single AA, but the voltage supplied to the mic is actually multiplied within the belt pack.

Q: 10. Is this microphone compatible with the Zoom H4N? Thanks!

A: This mic will work with the Zoom H4N. The mic has a couple of versions. Powered by battery or phantom power. The H4N has phantom power but will handle the battery version as well.