Sennheiser Dual Wireless Mic XSW 1-825-B
DUAL UHF Vocal Set with e835 Dynamic Microphone

e835 Mic Capsule with HH Transmitter
EM-XSW 1 UHF Receiver
Antenna-Switching Diversity Reception
Automatic Frequency Management
Remote Channel for Easy Setup
Selectable UHF Frequencies
Up to 10 Compatible Channels
Integrated Antennas
Includes NT 12-5 CW Power Supply
Includes Mic Clamp and 2 AA Batteries

specs
System
Modulation Wideband FM
Frequency Range A: 614 to 638 MHz
Switching Bandwidth Up to 24 MHz
Signal to Noise Ratio ? 103 dBA
Total Harmonic Distortion ? 0.9%
Temperature Range Operation: 32 to 104?F (0 to +40?C)
Storage -4 to 158?F (-20 to 70?C)
Transmitter Synchronization 2.4 GHz, Low Power OQPSK (only active during synchronization)
Receiver
Principle Double superheterodyne
Diversity Antenna switching diversity via internal antennas
Sensitivity < 3 ?V at 52 dBA RMS S/N (at peak deviation)
Frequency Response 50 Hz to 16 kHz (-3 dB)
Max Output Voltage At Peak Deviation, 1 kHz AF
1/4″ (6.3 mm) Jack Socket (unbalanced): +6 dBu
XLR Socket (balanced): +12 dBu
Adjustment Range Audio: 45 dB, adjustable in 5-dB steps
Power Supply 12 VDC nominal/300 mA
Squelch Adjustable from 3 dB ?V to 28 dB ?V (combined with pilot tone)
Line/Mic Level 20 dB, switchable
Material of Construction ABS housing