The gray Sanken COS-11D Omni Lavalier Microphone with Normal Sensitivity and 2.5mm Connector for Lectrosonics Transmitters is 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 2.5mm connector and is wired for use with Lectrosonics wireless 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 Lectrosonics Transmitters with 2.5mm    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

• Lectrosonics: Works with Lectrosonics bodypack transmitters and recorders equipped with a 2.5mm connector, including the MM400C and the WM (watertight) models.
• Also works with third-party wireless transmitters and portable audio recorders that are equipped to supply 3 to 10 VDC through a 2.5mm connector wired for Lectrosonics compatibility.

Related Questions and Answers

Q: 1. What would be your frequency recommendation for someone who is traveling a lot in the U.S. (mostly in the midwest but occasionally the coasts)?

A: Any of these frequency bands will work just fine anywhere in North America under current FCC regulations. Part of the reason there are different bands is so that you can use many systems at the same time and within the same space so that they do not interfere with each other. Another reason is if you are going to be using the system in a place where there are already many other wireless systems, you can choose the one that resides outside of the frequency band that those systems run in, to avoid interference with those systems. If you are not going to be in a space where there is already a lot of wireless traffic, then any of these will work just fine, up to 300 feet line of sight between the transmitters and the receiver.

Q: 2. Can i use this as well as my rode mic on the hot shoe?

A: That would depend on which Rode microphone you have, and what you are truly asking in the question. If you were asking if you can plug a Rode microphone into the transmitter: Yes, If you have a Rode lavalier, or even a shotgun microphone that terminates 3.5mm it work with the transmitter. You're asking if you can use your Rode microphone and the Blink 500 system into your camera simultaneously: You will need some kind of mixer, such as the Saramonic SR-PAX1, or the SR-AX100. But keep in mind the SR-AX100 is only for battery powered microphones, it has no pre-amplification. If you want pre-amplification, the Saramonic SR-PAX1 is a much better bet. I hope that helps.

Q: 3. How does this interface with a Smartphone?

A: There is an included TRRS output cable that you could connect to the headphone jack ( or headphone jack adapter) of your smartphone. This would allow for recording into the phone.

Q: 4. Can the receiver be used while plugged into power?

A: No, the receiver's battery needs to be charged in order to function.

Q: 5. The manual says to set AF Out on the receiver to +18 dB. Is this true? Why not 0db?

A: In general, Camera preamps are not the best quality. +18db ensures that you will need the least amount of preamp gain possible, which will maximize the quality you capture with the camera.

Q: 6. Is the dual audio output compatible with mirrorless cameras like the Nikon Z9? Or how would I input both mics to the camera? I'm trying to go an interview style film with 2 talents. Thank you.

A: Yes, the Sony UWP-D27 2-Person Camera-Mount Wireless Omni Lavalier Microphone System is compatible for use with the Nikon Z9 Mirrorless Camera. You would connect the output from the receiver to the camera's 3.5mm mic input using the included 3.5mm to locking 3.5mm cable and the audio from both microphones will be recorded by the camera along with the video.

Q: 7. Can I used this mic to shoot with my gopro 6?

A: Yes you can, if you have the GoPro Pro 3.5mm Mic Adapter, BH #GO35MA. https://bhpho.to/2xKXdEv

Q: 8. Does this work with a Panasonic G85 or G95 camera?

A: Yes, the Sennheiser EW 112P G4 Camera-Mount Wireless Omni Lavalier Microphone System would work with the Panasonic Lumix G85 Mirrorless Camera, as the camera has the necessary 3.5mm microphone input connection. The EW 112P G4 includes an adapter to mount the receiver onto the camera shoe, as well as the appropriate cable to connect the receiver's output to the camera's input. It does not appear that the Panasonic Lumix G95 Mirrorless Camera has the necessary 3.5mm microphone input connection, however.

Q: 9. Can you buy this system without the lav mics?

A: The Sony UWP-D27 is not available without lavalier mics.

Q: 10. This manual says it is compatible with rechargeable batteries. Will lithium batteries work?

A: Any AA battery will work with this kit.