Sennheiser XS Wireless True Diversity Receiver

The Sennheiser EM 10 is the central true diversity receiver for the original XS Wireless analog series, designed for entry-level professional audio applications. It uses true diversity technology, which utilizes two separate receiver circuits and antennas to automatically switch to the strongest signal, significantly reducing audio dropouts.
Key Technical Specifications
The EM 10 is a half-rack stationary unit featuring a metal chassis for durability.

Frequency Management: Supports up to 960 tunable UHF frequencies within a 24 MHz switching bandwidth.
Channel Presets: Organized into 8 frequency banks, each containing up to 12 factory-preset channels.
Audio Performance:
Signal-to-Noise Ratio:
.
Total Harmonic Distortion (THD):
.
Frequency Response:
to
.
Connectivity:
Outputs: One balanced XLR (+12 dBu) and one unbalanced 1/4" (6.3mm) jack (+6 dBu).
Antenna: Two BNC connectors for the included quarter-wave antennas.
Power: Requires a 12V DC external power supply (typically the NT 2-3 adapter).

Common Frequency Ranges
The EM 10 was manufactured in several bands depending on the region:

Range A: 548 – 572 MHz
Range B: 614 – 638 MHz
Range GB: 606 – 630 MHz
Range E: 821 – 832 MHz & 863 – 865 MHz

Usage Features

Automatic Scan: Features a "Scan" function to identify clear available channels and a "Sync" button to pair with transmitters via an RF remote channel.
Display: A backlit LCD shows the frequency, RF signal strength, audio level, and the battery status of the connected transmitter.
Controls: Front-panel controls include a volume knob, sync button, and frequency selection buttons.