The white Sanken COS-11D Omni Lavalier Microphone 3.5mmis 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. 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 3.5mm    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 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.

Related Questions and Answers

Q: 1. Do I need servo bias for Lectro SMQV?

A: Yes, the Lectrosonics SMQV Transmitter does have Servo Bias input, so you can use the Sanken COS-11D Omni Lavalier Microphone with Normal Sensitivity & Servo-Bias TA5F Connector for Lectrosonics Transmitters - with Accessories, Black (B&H # SAC11WNLSMB) instead of the Sanken COS-11D Omni Lavalier Microphone with Normal Sensitivity & Non-Servo TA5F Connector for Lectrosonics Transmitters (with Accessories, Black).

Q: 2. Which Sanken COS-11D to get for use with a Rodelink Filmaker?

A: This model Sanken COS- 11D will work with the Rode Fimmaker Kit wireless transmitter. The models with "Sennheiser locking 3.5mm connection" are appropriate.

Q: 3. A few reviews speak of the mic only working with G3/G4's when it is half plugged in. Is that due to buying the wrong 1/8 connector, ie for a differerent make of transmitter? Or is there a compatibility problem with the Cos11D and the Sennheiser EW range.

A: I see only one review posted for this mic where the customer noted a problem with connection to his Sennheiser transmitter. Without seeing both the mic and transmitter to evaluate, it is difficult to determine whether the issue may have been due to a defective mic or a problem with the transmitter. In general, the COS-11D is one of the most popular lavalier mics for various broadcast, film, and performance applications. This particular version of the COS-11D is wired for compatibility with Sennheiser transmitters such as the SK 100 G3 and G4 for the EW series wireless systems. Along with the manufacturer's warranty, B&H does have a 30-day policy for returns. So if you do decide to purchase and have any problem with the mic, let us know right away and we can set up an RMA to return the mic for exchange or refund. Just be sure to save all of the original manufacturer's packaging and don't register the warranty until you decide it's a keeper.

Q: 4. Will this work with Rodelink transmitter?

A: The Sanken COS-11D with the Sennheiser connector will fit the Rode transmitter. The Sanken is a fantastic lav as well. Good choice.

Q: 5. No, Im sorry let me re-ask my question - I already have a UWP system and want to up grade to a Sony UTX-B40 Wireless Bodypack Transmitter. For one, the UTX series has a dual receiver meaning they can take in 2 frequencies, etc, UWPs need individual receivers for each transmitter, but the UTS series too, use TRS mic inputs, just like the UWP series, which can take the Sanken Cos-11 lavs. What would happen if I connected the TRS connector from the Cos-11D into a Sony UTX-B40 Wireless Bodypack Transmitter? Is the Cos11D exclusively for UWP series TRS connectors? (and Sennheisers?

A: This particular mic will work with the UTX-B40 transmitter. It will not work with Sennheiser.

Q: 6. There are many options of Sanken COS-11D, but I still can't find the right one! Which model can be connected to Rode Wireless Go? Please let me know the product BH#

A: Unfortunately Sanken doesn't make a specific model for the Rode Wireless Go. If you want a better quality mic option for the Rode Wireless Go, I would recommend BH #COMEMWSFF05B.

Q: 7. Can this connect directly to a regular recorder like a zoom H1?

A: The COS-11D cannot be connected directly to a recorder. This mic has a 5 pin connection.

Q: 8. Hi, just wondering if someone could tell me if this is compatible with the SONY UTX-B2 wireless transmitter? Thanks, Ross.

A: As long as it is wired for the transmitter's connection, it should work without a problem.

Q: 9. Will these work for the Zoom F2?

A: Yes, this Sanken COS-11D with the locking 1/8" (3.5mm) connector for Sennheiser transmitters (B&H # SAC11WNSETRB) will work when connected to the mic input on the Zoom F2.

Q: 10. would this also work on the Sony URX-P40 mic receiver?

A: The URX-P40 is a receiver, so no, you would not connect a mic to it. It is compatible with the UWP series transmitters, which is compatible with URX-P40 receivers.