Part of the SpeechLine Digital Wireless line of microphone conferencing systems, the Sennheiser SL Boundary 114-S DW-4 B is a wireless boundary microphone optimized for speech transmission in conference rooms, huddle rooms, and meeting spaces. Designed to be placed on a flat surface such as a desk or a conference table, its flat shape is visually unobtrusive for the seated meeting participants. The microphone is equipped with a cardioid polar pattern that picks up the speaker either in front of the mic or in close proximity, ideal for meetings, presentations, video conferencing, streaming, and more.

The SL Boundary 114-S DW-4 B is powered via the included BA 40 rechargeable battery pack, which provides a typical operating time of 13 hours on a full charge. The complete absence of cable gives you speed of setup and the freedom to position the mic anywhere in the room. The battery can be charged wirelessly with the CHG 2W wireless power transmitter (available separately) or via USB.

Compatible with the SL Rack Receiver DW stationary receiver, the SL Boundary 114-S DW-4 B can be monitored and controlled remotely with the free Sennheiser Control Cockpit software (available separately).

For Meetings, Presentations, Streaming    Optimized for Speech Transmission    Compatible with the SL Rack Receiver DW    Cardioid Polar Pattern    Cable-Free Operation    Includes BA 40 Rechargeable Battery Pack    Operates Up to 13 Hours on a Full Charge    Unobtrusive, Low-Profile Design    Remote Monitoring and Control via App

• Wireless boundary microphone optimized for speech transmission in conference rooms, offices, huddle rooms, and more
• Use for meetings, presentations, video conferencing, streaming
• Complete absence of cable gives you the freedom to position the mic anywhere in the room
• Place on a flat surface such as a desk or a conference table
• Compatible with the SL Rack Receiver DW stationary receiver and the SpeechLine Digital Wireless family
• Includes BA 40 rechargeable battery pack—operates up to 13 hours on a full charge
• Cardioid polar pattern picks up speaker either in front of the microphone or in close proximity
• Unobtrusive flat shape provides desirable low-visual profile 
• Clean look without cable
• Supports charging via USB and wireless inductive charging with the CHG 2W wireless power transmitter (available separately)
• Automatic sensitivity adjustment
• Remote monitoring and control via the free Sennheiser Control Cockpit software for Windows, Mac, iOS, and Android (available separately)
• Battery-status LEDs provide clear battery-life indication

Related Questions and Answers

Q: 1. Can these be chained together?

A: No, the Sennheiser MEB 102 Omnidirectional Boundary Microphone cannot be daisy chained.

Q: 2. Can more than one mic be used with this receiver?

A: Although the Sennheiser SpeechLine Digital Wireless SL Rack Receiver DW-4-US is compatible with other Sennheiser Speechline transmitter modules such as the Sennheiser SpeechLine Digital Wireless SL Bodypack or the Sennheiser SpeechLine Digital Wireless SL Handheld Transmitter, only one transmitter can be paired with the receiver at a time.

Q: 3. Is the Beta91A manufactured in Mexico or China ?

A: The Shure Beta 91A Boundary Microphone is manufactured in Mexico.

Q: 4. If I got 4 mics, could I line up two in either row and record like this? OR could i line up all 4 in the same row?

A: You can use four of the Olympus ME-33 Boundary Microphones to record in a stereo configuration, with two mics on the left and two on the right. Up to three ME-33 mics can be used together in one line or six mics in two separate lines for a stereo setup. For a stereo setup, you can use a recorder with two separate inputs or use a Y-adapter the Kopul 3.5mm Stereo Y Cable (B&H # KOHPSSM) for a recorder with a single 3.5mm mic input. Here is a link to the user manual for the ME-33 which provides instructions for setting up multiple microphones: https://www.bhphotovideo.com/lit_files/839691.pdf

Q: 5. Does this have a screw thread or some other way that it can be connected to a stand to hold it against a wall (as it is supposed to be against a flat surface - either table or wall)?

A: The Olympus ME-33 does not have thread mounting options. This is made to be placed against a flat horizontal surface like a desk.

Q: 6. What are the cable's connections?

A: The MX396 is supplied without a connector. Typically, an installer will use phoenix block-type connectors or XLR connectors on the cable. It is OK to separate the cable wires out to three separate XLR connectors.

Q: 7. What is the power source for Olympus ME33?

A: The Olympus ME33 requires plug in power of 1.5 to 5v which is received through the audio cable when connected to an Olympus voice recorder, or similar device such as a camera or laptop that is able to supply this power.

Q: 8. What is the approximate range for this device? How large of a room?

A: The Polsen USB Boundary Microphone picks up audio in a 360-degree radius up to approximately 10 feet away.

Q: 9. Will it work with Countryman E6 earset microphone?

A: Yes, the Sennheiser SpeechLine Digital Wireless SL Bodypack DW-4-US Wireless Transmitter can be used with a Countryman E6 Earset Microphone as long as it has the correct connector and is wired for compatibility with Sennheiser transmitters. For example, you can use the Countryman E6 Directional Earset Mic, Standard Gain with Detachable 2mm Cable and 3.5mm Locking Connector for Sennheiser Wireless Transmitters - Light Beige (B&H # COE6DW5L2S6).

Q: 10. Will this mic work with my Sony PCM M10?

A: The PZM 30D requires phantom power 12 - 48v to operate. This unfortunately can not be provided by the PCM-M10 recorder and similar recorders that feature only a 1/8 input connection.