Sennheiser Ew-Dx Em 2 (Q1-9 : 470,2 - 550 Mhz)
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What you need to know
What you need to know
Essential Information on the Sennheiser EW-DX EM 2 2-Channel Digital Receiver (Q1-9: 470.2 - 550 MHz)
- 2-channel digital UHF receiver in a 9.5-inch half-rack format, designed for professional workflows in live, installation, and event settings.
- Accelerated frequency management thanks to AutoScan and equidistant channel spacing, enabling easier deployment even in RF-congested environments.
- Premium audio and ultra-low latency (1.9 ms) with the proprietary Sennheiser Performance Audio Codec (SePAC) and a wide dynamic range rated at 134 dB.
- Network integration and security: remote control via Ethernet, monitoring options, and AES-256 encryption for sensitive content.
Manufacturer Information
Sennheiser
https://www.sennheiser.com
contact@sennheiser.com
------------------------
Safety manager:
Sennheiser electronic SE & Co.
Email: contact@sennheiser.com
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EW-DX: The "Digital" Evolution Tailored for Modern Productions
With EW-DX, Sennheiser advances the Evolution Wireless philosophy toward a digital UHF platform designed to grow with your needs. The approach emphasizes deployment efficiency (scanning, channel allocation, supervision) and a more natural integration into current control rooms, where networking, RF coordination, and remote control have become essential. The EW-DX EM 2 fits this logic by offering a compact, robust, and system-oriented two-channel receiver: it sits at the center of your wireless chain while remaining ready for multi-channel deployments.
For Whom and What: Stage, Corporate, Broadcast, and Fixed Installations
The Sennheiser EW-DX EM 2 is a relevant choice whenever you need to secure a wireless microphone link while maintaining quick setup: live stages, tours, conferences, places of worship, theaters, multipurpose rooms, or service providers. Its 9.5-inch half-rack format facilitates integration into flight cases or racks, while retaining direct front-panel control (OLED display, rotary knob, buttons) and headphone monitoring. It is designed for use with Evolution Wireless Digital transmitters - handheld, bodypack, and lavalier - to form a coherent system from stage to control room.
- Worldwide use (specific frequencies subject to local RF regulations)
Technical specifications
| Category | receiver | Outputs | jack, RJ45, Ethernet |
| Frequency band | Q1-9 â 470 Ă 550 MHz | ||
| Audio link frequency ranges | Q1-9: 470.2 - 550 MHz | External power supply | 12V/1A |
| Bluetooth Low Energy (BLE) frequency range | 2405 - 2480 MHz | Ethernet connectivity | IPv4 and IPv6 |
| Audio frequency response | 20 Hz - 20 kHz (-3 dB) @ 3 dBfs | Transmitting power (radiated) | BLE: max. 10 mW EIRP |
| Total harmonic distortion (THD) | -60 dB for 1 kHz at -3 dBfs input level (value/comparison sign not specified) | Audio output power | 18 dBu max. |
| Dynamic range | 134 dB | Secure transmission | AES 256 encryption |
| System latency | 1.9 ms | Link Quality Indicator (LQI) | separate link quality at RF levels |
| RF technology | intelligent switching diversity | Remote control | Smart Assist app via Bluetooth Low Energy (BLE), up to 25 metres (available in 2023) |
| Operating temperature | -10 degC - +55 degC (14 degF - 131 degF) | User interface | OLED display, navigation wheel and control buttons |
| Operating relative humidity | 5 - 95% (non-condensing) | Headphone output | selectable, with volume control on the front panel |
| Switching bandwidth | up to 88 MHz | Extended menu settings | custom frequency list, selectable synchronisation setting, walk test |
| Equidistant channel spacing for easy channel allocation without intermodulation | standard mode with 600 kHz spacing for a maximum of 146 channels ; Link Density (LD) mode with 300 kHz spacing for a maximum of 293 channels | Ethernet | RJ-45 socket, IEEE802.3 |
| Input voltage range | 11 - 13 V or PoE IEEE 802.3af Class 0 | Network standards | 100Base-TX (half-duplex and full-duplex), 10Base-T (half-duplex and full-duplex) |
| Input current | 1 A (exact value not specified) | Cable | CAT5e or higher |
| Power over Ethernet | PoE IEEE 802.3af Class 3 | ||
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Questions frequently asked
Which transmitters are compatible with the Sennheiser EW-DX EM 2?
This two-channel receiver is designed for Evolution Wireless Digital handheld, bodypack, and belt-pack transmitters. The audio link operates in the Q1-9 band, from 470.2 to 550 MHz.
How many wireless channels can this receiver handle?
Two reception channels are integrated. Equidistant allocation allows up to 146 channels in standard mode at 600 kHz, or up to 293 channels in Link Density mode at 300 kHz.
Can the EW-DX EM 2 be controlled over a network?
RJ45 Ethernet IEEE 802.3 connectivity is available using CAT5e cable or higher. Control is supported via Sennheiser Control Cockpit and Wireless Systems Manager. A Smart Assist control via Bluetooth Low Energy is announced with a range up to 25 m.
What is the audio latency of the EW-DX system?
The system latency is specified as 1.9 ms, with a frequency response from 20 Hz to 20 kHz at -3 dBfs.
Can the receiver be powered by PoE?
Power can be supplied via PoE IEEE 802.3af Class 0 or through an external 12 V / 1 A power supply. The input voltage range is specified from 11 to 13 V.
