SL Boundary 114-S DW-6 B

A cable-free voice pickup for the middle of the table

The Sennheiser SL Boundary 114-S DW-6 B is a black table boundary microphone from the SpeechLine Digital Wireless range, designed to capture speech in conference rooms without a cable crossing the table. It works with an SL Rack Receiver DW, so participants can rearrange their seats and the microphone keeps working. Its condenser capsule and half-cardioid pickup favour voices from the front, which suits a row of people seated along one edge of a boardroom table.

Audio and wireless figures for this variant

This variant differs from its siblings in one listed figure: its dynamic range is below 100 dB(A), while the DW-3 B, DW-4 B, DW-5 B and DW-7 B are listed below 110 dB(A). The remaining figures are shared across the series and are the ones to compare against your current equipment:

• EU frequency range: 1,880 to 1,900 MHz
• Audio frequency response: 40 to 20,000 Hz
• Signal-to-noise ratio: above 90 dB(A)
• Sampling: 24 bit/48 kHz
• Total harmonic distortion: typically 0.1 %
• Microphone sensitivity: 10 mV/Pa

Charging, battery life and controls

A BA 40 rechargeable battery comes in the box, rated at 2.2 Ah and 3.6 V. The series data gives a typical battery pack runtime of 13 hours for this variant. The microphone charges by wireless inductive charging or by USB, so you can top it up on the table between sessions or from a USB source during the working day.

The microphone button can be programmed for push-to-talk, push-to-mute, toggle on and off, or permanently on. A two-colour LED ring shows the status of the microphone, and battery status LEDs show the remaining charge. Remote monitoring and control are possible with the Sennheiser Control Cockpit, which helps a support team check several rooms without visiting each one.

Where it fits in Qatar

A government ministry boardroom in West Bay, where the table must stay clear for documents and laptops, is a typical match. Many meetings there run from Sunday to Thursday, so a battery charged at the end of each day will be ready for the next morning. A university seminar room in Education City, where lecturers move between the table and the lectern, benefits from a microphone that can be recharged without a tangle of cables. An operations room at an energy company in Mesaieed, where teams join calls with colleagues abroad, can use a clear table microphone so remote colleagues hear the room well.

What to plan before you order

Confirm the frequency band before ordering. The source data lists the EU band of 1,880 to 1,900 MHz, so ask the SmartRooms Qatar team to check it against your site before you request a quotation.

Plan for heat and table layout. The series data lists an operating range of 0 °C to 45 °C and humidity up to 95 %, while Qatar summers can exceed 45 °C, so keep the microphone in air-conditioned rooms away from sunlit sills. The DW-6 B variant data does not repeat the temperature figures, so confirm them with the team. The series dimensions are 114 mm high, 85 mm long and 30.8 mm wide, and this variant weighs 208 g. A free site survey checks seating and receiver positions before the quotation is finalised.

Multi-room orders from schools and public bodies can be placed by purchase order or through government tenders, with delivery to all eight municipalities. Request a quote with your room count and table layouts, and our team will reply with a quotation usually within one working day.