Sennheiser SL MCR 4 DW-4 4-Channel Wireless Receiver - 508855

Product Overview

The Sennheiser SL MCR 4 DW-4 is a 4-channel SpeechLine Digital Wireless receiver designed for speech-critical installations where reliability and clean audio are non-negotiable. Operating in the license-free 1.9 GHz DECT band, it eliminates the frequency coordination challenges common to UHF systems. Its low-profile, unobtrusive enclosure is engineered for discreet mounting in furniture, ceiling voids, or standard rack infrastructure. With onboard Dante networking and Power over Ethernet, the SL MCR 4 DW-4 reduces installation complexity to a single Cat cable run.

Product Description

The SL MCR 4 DW-4 supports up to four simultaneous wireless channels, pairing with SpeechLine SL Bodypack DW and SL Handheld DW transmitters for complete system deployments. Its integrated automixer continuously monitors all four channels and delivers a clean, level-controlled mix output — useful in boardrooms and lecture halls where multiple speakers present in turn. Audio is available via both a balanced analog mix output and a 2-port Dante interface, giving integrators the flexibility to route audio into existing DSP infrastructure without replacing downstream equipment.

AES 256 encryption secures every transmission, meeting the confidentiality requirements of legal, government, and corporate environments. Automatic frequency management scans and assigns channels without manual intervention, and automatic interference management actively maintains link stability. All transmitter parameters — including gain, mute state, and battery status — can be monitored and adjusted remotely through Sennheiser Control Cockpit software or via third-party media control systems including AMX, Crestron, and Q-SYS. The integrated antennas remove the need for external antenna distribution hardware, and PoE operation means no separate power supply is required at the receiver location.

Key Features

• 4-Channel DECT Reception — Handles up to four simultaneous wireless audio channels in the license-free 1.9 GHz band.
• Dante Network Audio — Dual-port Dante interface routes all channels or the mix output directly onto your AV network.
• Power over Ethernet (PoE) — A single Cat cable delivers both network connectivity and power, simplifying above-ceiling and furniture installations.
• Integrated Automixer — On-board automatic gain control and mix logic produces a clean sum signal without external DSP for mixing.
• AES 256 Encryption — End-to-end encryption on every RF link protects sensitive audio in boardrooms, courtrooms, and government facilities.
• Automatic Frequency Management — Self-assigns operating frequencies on startup, removing the need for manual spectrum coordination.
• Automatic Interference Management — Continuously monitors the RF environment and reacts to interference events to maintain transmission reliability.
• Remote Control via Control Cockpit — Full remote monitoring and control via Sennheiser Control Cockpit software and third-party control systems (AMX, Crestron, Q-SYS).
• Flexible Mounting Options — Mounts on wall, ceiling, or mic stand; compact form factor fits into furniture cutouts for furniture-integrated installations.
• Analog Mix Output — Balanced analog mix output provides a single sum signal compatible with any analog input on an existing DSP or amplifier.
• Bidirectional RF Communication — Two-way link between receiver and transmitter enables remote parameter control and real-time status feedback.
• DDM Ready — Compatible with Sennheiser Digital Dante Module configurations for expanded network audio deployments.

Typical Applications

• Corporate boardroom and executive conference room wireless microphone systems
• Higher education lecture halls and auditoriums requiring multi-speaker wireless coverage
• Government chambers, courtrooms, and council chambers with confidentiality requirements
• House of worship main sanctuaries and teaching spaces
• Training rooms and multi-use presentation spaces
• AV-over-IP integrated meeting rooms and video conferencing environments

Technical Specifications

Frequently Asked Questions

Q: What transmitters are compatible with the SL MCR 4 DW-4?

The SL MCR 4 DW-4 works exclusively with Sennheiser SpeechLine transmitters: the SL Bodypack DW and SL Handheld DW. It is not compatible with UHF or 2.4 GHz Sennheiser systems.

Q: Does this receiver require a frequency license?

No. It operates in the 1.9 GHz DECT band, which is license-free in the United States and most international markets. No frequency coordination or FCC license application is required.

Q: Is a separate power supply required?

No. The SL MCR 4 DW-4 is powered via standard Power over Ethernet (PoE), so a single Cat5e or Cat6 cable from a PoE-capable network switch or injector provides both data and power.

Q: Can this receiver be controlled by a Crestron or AMX system?

Yes. The SL MCR 4 DW-4 supports third-party media control via AMX, Crestron, and Q-SYS in addition to Sennheiser's own Control Cockpit software.

Q: How many channels can run simultaneously?

The DW-4 variant supports up to four simultaneous wireless channels. A 2-channel variant (DW-2) is also available at a lower price point for smaller deployments.

Q: Does it require external antennas or antenna distribution?

No. The SL MCR 4 DW-4 has integrated antennas, eliminating the need for external antenna cables, splitters, or active antenna distribution hardware.

Q: Is the audio encrypted?

Yes. All RF links between the SL MCR 4 DW-4 and paired transmitters use AES 256-bit encryption, meeting enterprise and government confidentiality standards.

Q: What is the warranty on this product?

Sennheiser provides a 2-year manufacturer's warranty on the SL MCR 4 DW-4. Contact Creation Networks for warranty registration support and service options.