Product specification

PRODUCT SPECIFICATION (V1.2)
Evolution Wireless Digital
EW-DX EM 2 | Rack Receiver
4/4
Sennheiser electronic GmbH & Co. KG · Am Labor 1 · 30900 Wedemark · Germany · www.sennheiser.com
ARCHITECT‘S SPECIFICATION
EW-DX EM 2 rack receiver
The stationary two-channel receiver with switching diver-
sity technology shall be for use with up to two companion
transmitters as part of a digital wireless RF transmission
system.
The receiver shall operate within the following UHF fre-
quency ranges, with a switching bandwidth of up to 88
MHz: 470.2 – 550 MHz, 520 – 607.8, 606.2 – 693.8 MHz,
MHz, 614.2 – 693.8 MHz, 630 – 693.8 MHz, 823.2 – 831.8
MHz, 863.2 – 846.8 MHz, 925.2 – 937.3 MHz, 941.7 – 951.8
MHz, 953.05 – 956.05 MHz, 956.65 – 959.65 MHz, 1785.2 –
1799.8 MHz. Different frequency variants shall be available
depending on country-specific regulations.
The receiver shall feature Bluetooth® Low Energy (BLE) at
a frequency range between 2402 and 2480 MHz for remote
controlling the devices via a control App for iOS and And-
roid.
The receiver shall feature an automatic frequency setup
function with spectrum scan functionality in order to es-
tablish an equidistant frequency grid with 146 channels in
standard mode and 293 channels in Link Density Mode.
The audio frequency response shall be between 20 Hz and
20 kHz (-3 dB). Audio total harmonic distortion (THD) shall
be ≤ -60 dB for 1 kHz @ -3 dBfs input level. Dynamic range
shall be 134 dB. System latency shall be 1.9 ms.
The receiver shall be menu-driven with an OLED display
showing the current frequency, channel number, metering
of RF level, metering of AF level, lock status, muting fun-
ction, antenna switching diversity, app connection, gain,
audio output level, menu and battery status for each of the
two associated transmitters. An auto-lock feature shall
be provided to prevent settings from being accidentally
altered.
The following settings shall be configurable by function
buttons and an encoder for each channel in the menu:
frequency, channel name, gain, trim, AF output, low cut,
AES 256 encryption, test tone, network settings, integrated
antenna booster settings, display brightness, device name,
auto setup settings for automatic frequency setup.
For each of the two channels the receiver shall feature a
balanced XLR-3M audio output with a maximum output
of +18 dBu along with an unbalanced 6.3 mm (¼“) audio
output with a maximum output of +12 dBu.
For secure transmission the receiver shall feature AES 256
encryption.
The receiver shall provide a walktest mode for monitoring
the RF and AF signal status in the location over time.
Two BNC-type input sockets shall be provided for connec-
ting the antennas. The receiver shall be usable with active
and passive wide range UHF antennas for the entire sup-
ported RF spectrum.
A headphone output with headphone volume control shall
be provided and shall utilize a 6.3 mm stereo jack socket.
The receiver shall have an Ethernet port (RJ-45) for remote
network-based monitoring and control using the Sennhei-
ser Control Cockpit software or the Sennheiser Wireless
Systems Manager software.
The receiver shall operate on 12 V DC power supplied from
the power supply unit or on Power over Ethernet (PoE IEEE
802.af Class 0). Power consumption shall be ≤ 1 A.
The receiver shall have a rugged metal housing; dimensi-
ons shall be approximately 212 x 44 x 206 mm (8.35“ x 1.73“
x 8.11“). Weight shall be approximately 1000 grams (2.2 lbs)
without antennas and power supply. Operating tempera-
ture shall range from −10 °C to +50 °C (+14 °F to +122 °F).
The receiver shall be the Sennheiser EW-DX EM 2.