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).

SL Boundary 114-S DW Wireless Mic    SpeechLine SL Rack Receiver DW    Optimized for Speech Transmission    For Meetings, Presentations, Streaming    Boundary Mic with Cardioid Polar Pattern    Automatic Frequency Selection    Cable-Free Operation    Secure 256-Bit AES Encryption    Ethernet Connectivity    Includes BA 40 Rechargeable Battery Pack

• 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 i choose skintone color on this headworn mic?

A: The SL Headmic 1 microphone is available separately in a beige finish (B&H # SESLHM1BE), but it looks like the system may only be offered as a package with the included mic in black finish. Please call us to check on whether it can be special ordered for you. You can reach us by phone at (800) 606-6969 or (212) 444-6615.

Q: 2. How to reduce echo and feedback - cant increase the volume?

A: Avoid the PA speakers. Turn down the PA volume. Add a unit like this:dbx AFS2 Dual-Channel Advanced Feedback Suppression Processor B&H # DBAFS2

Q: 3. What is the maximum range from the transmitter to the receiver?

A: The maximum range of this wireless system is 98 feet, with line of sight between the transmitter and the receiver.

Q: 4. Does this unit only work in US ?

A: Yes. The Sennheiser SpeechLine Digital Wireless Microphone Set with 133-S GN Stand, MEG 14-40 B Microphone, and DW Receiver (US)BH #SESLTS133GNS is designed and recommended for use in the USA only.

Q: 5. Does this kit comply with the current FCC spec for wireless transmission?

A: Yes, the Sennheiser AVX-Combo SET Digital Camera-Mount Wireless Microphone System is legal for use within the USA without an FCC license. It operates on the 1.9 GHz band.

Q: 6. Since this has a built-in preamp, would you connect it to line input? Also, wouldn't it need phantom power since it's a condenser mic?

A: The integrated pre-amp feature is referring to the fact that the XLR connection is built into the microphone. This has a mic level output that does require 48v phantom power.

Q: 7. how is this mic for singing?

A: TYes - it is recommended for singers. The SL Headmic 1 is an extremely unobtrusive and comfortable-to-use headworn microphone. It features the proven omni-directional MKE 1 microphone capsule. The adjustable neck band makes its use conventient for everyone. The extremely lightweight (7 g) but robust metal frame makes long-term usage most convenient. It comes with a sturdy and sleek soft-case, which can also hold a bodypack transmitter. The microphone is available in black or beige.Features:Audio signal is reproduced transparently, while maximum intelligibility of speech and vocals is achieved with its omnidirectional polar pattern and wide frequency response. High maximum sound pressure level (142dB) Very high speech intelligibility; clear, pleasant treble Full, natural sound with low ambient noise Most comfortable-to-use presenter microphone Outstanding sound quality, omni-directional Sleek and unobtrusive appearance Extremely lightweight, but sturdy metal frame Soft-case for convenient transport and storage

Q: 8. 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: 9. How to reduce feedback

A: Proper placement is crucial. You want to ensure you are close enough to your source --in this case, the mouth of your presenter-- to achieve adequate gain with minimal ambience, yet far enough away as to not to pick up every breath between phrases. Once you've found your sweet spot, implement a few bands of parametric eq to catch the first frequencies that begin to propagate. Parametric eq's are easy to come by on most digital consoles but if you are working with analog gear, inserting a graphic eq at the end of your channel --after compression and before any channel groups or mix busses you may be routing through-- should also allow you to notch out the first few problematic frequencies and achieve adequate gain without carving away too much of the tone and timbre of your presenter's voice.

Q: 10. Can this antenna be used with the EW 300 IEM G3 which is in the band 566-608 MHz?

A: Nope. This uses the 1.9 GHz band