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Sennheiser 2-channel, 1/2 Rk Wireless Receiver S4-10

Manufacturer: Sennheiser
For Evolution Wireless Digital handhelds and bodypack
SKU: 509348
Availability: Out of Stock - can backorder and will be dispatched once in stock.
$2,098.99 incl tax
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The Sennheiser EW-DX EM is a professional 2-channel digital wireless receiver designed for use with the EW-DX series of handheld, bodypack, and tablestand transmitters. Housed in a rugged half-rack 9.5” format, it brings scalable digital UHF performance to any venue, event, or campus-wide AV setup.

Equipped with Switching Diversity reception, equidistant channel spacing, and secure AES 256-bit encryption, the EW-DX EM ensures stable, interference-resistant operation with pristine 24-bit audio quality. It supports both Standard Mode (146 channels) and Link Density Mode (293 channels) for high-density RF environments.

Setup is made effortless via Bluetooth Low Energy (BLE) sync and app-based control using Sennheiser Smart Assist, Control Cockpit, or Wireless Systems Manager. A bright OLED display, PoE support, and a full suite of network features (IPv4/IPv6) make this receiver perfect for modern AV installations, corporate boardrooms, theatre productions, worship venues, and multi-room facilities.

Key Features:

  • 2-channel 1/2 rack digital UHF receiver for EW-DX series

  • 24-bit audio resolution, 134 dB dynamic range

  • Equidistant channel spacing (Standard and Link Density modes)

  • Secure AES 256 encryption

  • BLE sync and remote app control

  • Compatible with Sennheiser Smart Assist, Control Cockpit & WSM

  • OLED display for clear at-a-glance monitoring

  • Network ready (IPv4/IPv6), PoE IEEE 802.3af Class 3

  • Audio outputs: 2 x XLR + 2 x ¼" TS

  • Includes rackmount kit and external power adapter

What’s in the Box:

  • 1 x EW-DX EM 2-channel receiver

  • 2 x ¼ wave BNC antennas

  • 1 x Power supply (12VDC)

  • 1 x Rackmount kit

  • 1 x RJ45 network cable

  • User manual

Specifications

System
Wireless TechnologyDigital UHF
Number of RF Channel Frequencies3200
Included Transmitters2 x Handheld
DiversityIntelligent Switching Diversity
RF Frequency BandS4-10: 630 - 693.8 MHz
RF Channel ScanningAuto-Scan
Max Operating Range328.1' / 100 m (Line of Sight)
Max Transmitters per Band269
Built-In RecorderNo
Control App SupportYes, Available for Android/iOS
Bluetooth5.1 LE
Bluetooth Operating Distance120' / 36.6 m (Transmitter Sync, App Control)
Sample Rate/Resolution24-Bit
Latency1.9 ms
Dynamic Range134 dB
EncryptionAES 256
Receiver
Receiver TypeTabletop / Rackmount
Mounting OptionsRackmount (with Included Hardware)
Rackmount Size1 RU (1/2 Rack)
Antenna2 x 1/4 Wave Rod, BNC (Rear-Mount)
Number of Audio Channels2
Audio I/O2 x XLR 3-Pin Male Balanced Output
2 x 1/4" TS Female Unbalanced Output
Audio Output Level+18 dBu (Max)
+12 dBu (Max)
Frequency Response20 Hz to 20 kHz ±3 dB
Network I/O1 x RJ45
Word Clock I/ONone
USB/Lightning ConnectivityNone
RF Output Power10 mW (EIRP)
Power RequirementsAC/DC Power Adapter, PoE
AC/DC Power Adapter11 to 13 VDC (Included)
DC Input Power12 VDC
AC Input Power100 to 240 VAC, 50 / 60 Hz
Display & Indicators1 x OLED (AF Level, Channel, Frequency, Output Level, RF Level, Transmitter Battery Status)
HousingMetal
Operating Temperature14 to 131°F / -10 to 55°C
Operating Humidity5 to 95%
Dimensions8.3 x 1.7 x 7.4" / 212 x 44 x 189 mm
Weight2.2 lb / 1 kg (without Antenna)
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