SL MCR 4 DW-6

What the SL MCR 4 DW-6 receives and how it routes audio

The SL MCR 4 DW-6 is the four-channel receiver in Sennheiser's SpeechLine DW multi-channel family, built for SpeechLine Digital Wireless transmitters. Each of its four channels takes a wireless signal and passes it on as a digital or analog feed, so one unit can serve a room with four wireless microphones. The receiver is white, measures 180 x 180 x 45 mm including its wall mounting plate, and weighs 560 g.

Frequency, reliability and transmitter control

Operating in the 1880.000 to 1895.000 frequency range, the receiver sets its frequencies through automatic frequency management, so installers do not need to pick channels by hand during setup. Automatic interference management is designed to keep transmission reliable when conditions change, and a pairing function links each transmitter to its receiver. Because the receiver and transmitters communicate in both directions, transmitter settings can be adjusted from the Sennheiser Control Cockpit. Audio is rated at 20 to 20,000 Hz with a dynamic range above 120 dB(A) and typical total harmonic distortion of 0.1 %, and latency is 23 ms.

Networking, Dante and analog integration

The receiver works over a single network cable using PoE, and it has an RJ-45 Ethernet connector. Its two Dante network sockets are configured as primary and secondary, so the audio mix can be carried digitally and added to an existing Dante setup without replacing the DSP. For rooms still wired for analog, a 3-pin socket provides the analog mix output, and the integrated auto mixer combines all channels into one sum signal. Remote control and monitoring are possible through media control systems such as AMX, Crestron and Q-SYS Control, and a third-party API is available from the manufacturer. AES 256 encryption is specified for the wireless link.

Installation and environmental limits

Mounting is flexible: the unit can be fixed to a wall or ceiling or placed on a microphone stand. The box includes the wall mounting plate, a drilling template for marking fixing points, a 3-pin Phoenix connector and a quick guide. Because the antennas are built in, you do not need to plan a separate antenna run around the room. The operating temperature range is -10°C to +45°C with relative humidity up to 95 %, and power consumption is below 15 W. In Qatar, where summer temperatures can pass 45°C, install the receiver in an air-conditioned space and check the ceiling void conditions before fixing it.

Where it fits in Qatar

• Boardroom in West Bay: four wireless microphones run from one wall-mounted receiver, with the Dante feed going onto the office audio network.
• School hall in Al Wakrah: a ceiling-mounted receiver feeding the hall sound system through its analog mix output.
• Council chamber in Msheireb: the receiver integrated into a Crestron or Q-SYS control system so facilities staff can monitor it remotely.

Planning your order

Before ordering, confirm how many transmitters the room needs, which network switch will supply PoE, and whether the site uses Dante or analog mixing. SmartRooms Qatar offers free site surveys, so the installation position can be checked before fixing. Quotations usually arrive within one working day, and we supply against an LPO or a government tender including Monaqasat, with payment by bank transfer, cheque or purchase order. The receiver is covered by the manufacturer's 2-year warranty. Request a quote for the SL MCR 4 DW-6 and send your room layout to the SmartRooms Qatar team, who will confirm availability and estimated lead time with the quotation.