Sennheiser EW-DX EM 4 DANTE Four-Channel Digital Rackmount Receiver with Dante

Product Overview

The Sennheiser EW-DX EM 4 DANTE is a four-channel digital wireless receiver built on Sennheiser's EW-DX (Evolution Wireless Digital Extra) platform, combining fully digital UHF reception with integrated Dante audio networking in a single 1 RU rack-mount chassis. Designed for demanding professional environments including houses of worship, performing arts centers, corporate auditoriums, and broadcast studios, it handles up to four simultaneous wireless channels with switching diversity and AES-256 encryption on each. The 80 MHz tuning bandwidth and equidistant tuning grid accommodate up to 134 simultaneous mic channels in standard mode, or up to 269 via Link Density mode, making it one of the most spectrum-efficient receivers in its class. Dante networking distributes all four audio channels digitally to any compatible device on the network via the rear RJ45 ports, eliminating the need for analog runs to the FOH or control room.

Product Description

The EW-DX EM 4 DANTE operates in the UHF band (Q1-9: 470.2–550 MHz; R1-9: 520–607.8 MHz; V5-7: available), keeping wireless transmission well clear of 2.4 GHz Wi-Fi congestion and providing a maximum operating range of 328 feet (100 m) line of sight. Intelligent Switching Diversity continuously compares signals on two independent antennas and receiver circuits, switching only during header data so audio integrity is never compromised. The auto-scan function identifies and locks onto the cleanest available frequency, and the equidistant tuning grid with 25 kHz steps eliminates the need for manual frequency coordination in multi-receiver systems.

Audio latency is 1.9 ms, suitable for in-ear monitoring and time-sensitive live production workflows. The rear panel provides four balanced XLR outputs and four unbalanced 1/4" TS outputs, plus a 1/4" TRS headphone output for on-site monitoring. Maximum balanced output level is +18 dBu. Frequency response is 20 Hz to 20 kHz (±3 dB). Four RJ45 ports support Dante audio networking (TCP IPv4 and IPv6) alongside control networking for Sennheiser Control Cockpit and Wireless Systems Manager software.

Bluetooth 5.1 LE allows transmitter pairing and system management via the Sennheiser Smart Assist app (free, iOS and Android) from up to 120 feet away, enabling stage-side pairing and channel changes without visiting the equipment rack. The front panel features dual high-contrast OLED displays showing RF level, audio output level, channel frequency, and transmitter battery status simultaneously. The all-metal chassis mounts in a standard 1 RU rack space with included hardware and accepts a universal 100–240 VAC power input.

The EW-DX EM 4 DANTE is compatible with the full EW-DX transmitter range including SKM handheld and SK bodypack transmitters. It also maintains backward compatibility with EW-D series components, protecting investment in existing Sennheiser wireless infrastructure. For antenna distribution, the EW-D ASA active antenna splitter extends coverage across multiple receivers from a single antenna pair, and optional 1/2-wave dipole antennas are available for extended range applications.

Key Features

• 4-Channel Digital UHF Receiver — Four simultaneous channels of fully digital wireless audio in a single 1 RU chassis, eliminating the need for multiple single-channel receivers.
• Integrated Dante Networking — Four RJ45 Dante ports distribute all audio channels digitally over the network; supports TCP IPv4 and IPv6 protocols.
• 80 MHz Tuning Bandwidth / 3,200 Frequencies — Wide RF bandwidth across 25 kHz steps provides extensive frequency options to work around interference in congested RF environments.
• Equidistant Tuning Grid — Proprietary grid eliminates the need for frequency coordination, supporting up to 134 simultaneous mic channels in standard mode.
• Link Density Mode — Expands system capacity to up to 269 simultaneous channels on the same RF band for large-scale productions and venues.
• Intelligent Switching Diversity — Dual-antenna, dual-receiver circuit diversity switches only on header data, ensuring dropout-free audio under challenging multipath conditions.
• AES-256 Encryption — End-to-end encryption on all channels protects transmission security in corporate, government, and broadcast environments.
• 1.9 ms Latency — Ultra-low audio latency suits in-ear monitor (IEM) mixing and live broadcast workflows where delay accumulation is a concern.
• Bluetooth 5.1 LE with Smart Assist App — Pair transmitters and adjust settings remotely from up to 120 feet away via the free iOS/Android app, without leaving the stage.
• Dual OLED Front-Panel Displays — High-contrast screens show RF level, audio output, frequency, channel label, and transmitter battery status at a glance.
• Balanced XLR + Unbalanced 1/4" Outputs — Four balanced XLR and four unbalanced TS outputs provide flexible connection to any mixing console or PA system; +18 dBu max balanced output.
• EW-D Backward Compatibility — Compatible with existing EW-D series transmitters, enabling gradual system upgrades without replacing all transmitter components simultaneously.

Typical Applications

• House of worship multi-channel wireless microphone systems with Dante-connected audio networks
• Corporate auditorium and conference center wireless audio installations
• Performing arts centers and live theater requiring dense channel operation
• Broadcast studio wireless microphone infrastructure with Dante distribution
• Touring and live event production with high channel count requirements
• Educational institution auditoriums and large lecture halls

Technical Specifications

Frequently Asked Questions

Q: What transmitters are compatible with the EW-DX EM 4 DANTE?

The receiver is designed for use with the EW-DX SKM handheld and EW-DX SK bodypack transmitters. It is also backward compatible with EW-D series transmitters, allowing mixed-generation systems during a phased upgrade.

Q: How does Dante integration work on this receiver?

The four rear-panel RJ45 ports carry Dante audio over IP. Once connected to a Dante network and discovered by Dante Controller software, all four audio channels can be routed to any Dante-capable device on the network — including mixers, DSPs, recording systems, and other receivers. The receiver supports TCP IPv4 and IPv6.

Q: What is Link Density mode and when should I use it?

Link Density mode allows up to 269 simultaneous wireless channels on a single RF band, compared to 134 in standard mode. It is intended for large venues, festivals, or broadcast environments with very high channel count requirements. Some range reduction may occur in Link Density mode; refer to Sennheiser's documentation for site-specific planning guidance.

Q: Can I control the receiver from a phone or tablet?

Yes. The Sennheiser Smart Assist app (free download for iOS and Android) connects to the receiver via Bluetooth 5.1 LE from up to 120 feet away. You can pair transmitters, monitor battery levels, change frequencies, and adjust output levels without physical access to the rack.

Q: Can I integrate the EW-DX EM 4 DANTE into Sennheiser's network management software?

Yes. Sennheiser Control Cockpit (Windows) provides device-level monitoring and control across all networked EW-DX components. For larger, more complex systems, Sennheiser Wireless Systems Manager supports frequency planning, RF scanning, walk tests, and real-time audio and RF monitoring across the entire installation.

Q: What antenna options are available for extended range?

The receiver ships with two detachable 1/4-wave BNC rod antennas mounted at the rear. For extended range, optional 1/2-wave dipole antennas are available separately. The Sennheiser ADA UHF Active Antenna and AWM Wallmount Antenna are also compatible. For multi-receiver deployments, the EW-D ASA Active Antenna Splitter distributes a single antenna pair signal to up to four receivers.

Q: Does the receiver support AES-256 encryption on all channels?

Yes. AES-256 encryption is supported across all four channels simultaneously, providing broadcast-grade transmission security. Encryption must be enabled and paired with compatible EW-DX transmitters configured for encrypted operation.

Q: What firmware update process applies to the EW-DX EM 4 DANTE?

Firmware updates are delivered via Sennheiser's Smart Assist app over Bluetooth or through Sennheiser Control Cockpit software over the network connection. Sennheiser recommends keeping firmware current to maintain RF performance optimization and feature access.