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Sennheiser EW-D ASA (Q-R-S) Antennijakaja
The Sennheiser EW-D ASA (Q-R-S) is an active antenna splitter designed for seamless integration with Evolution Wireless Digital systems. By distributing antenna signals to up to four receivers, it ensures robust RF performance and efficient system management in demanding professional settings.
- One antenna pair can serve up to four EW-D receivers, maximizing rack space and signal reliability.
- Flexibility for multi-channel setups comes from the wide 470–694 MHz frequency range.
- Low-loss signal splitting and integrated power for boosters or receivers are provided by active circuitry.
- Up to 90 wireless channels are supported per system, thanks to minimal intermodulation and high linearity.
Sennheiser EW-D ASA (Q-R-S) Antenna Splitter – Professional RF Distribution
For wireless engineers seeking to expand Evolution Wireless Digital systems, the Sennheiser EW-D ASA (Q-R-S) antenna splitter delivers advanced RF signal distribution with low loss and stable power. Ideal for live events, theatre, broadcast, or fixed installations, this model supports precise rack integration and flexible system scaling.
Unique Features for Modern Wireless Setups
What distinguishes this splitter is its broad 470–694 MHz frequency range and active 2 x 1:4 (dual) or 1 x 1:8 (single) splitting capability. Direct DC power delivery (12 V, up to 320 mA) for boosters and receivers reduces cable clutter and enables high channel density. With high intermodulation resilience (IIP3 > 25 dBm), the EW-D ASA allows for equidistant frequency spacing, mirroring Sennheiser flagship technology.
Key Technical Specifications – Reliable Signal Distribution
Managing antennas efficiently is crucial in multi-channel setups, and the EW-D ASA’s active design keeps signal integrity strong across large venues.
- Frequency Range: 470–694 MHz — covers a broad UHF spectrum for international compatibility
- Splitter configuration is flexible: either 2 x 1:4 or 1 x 1:8 active, depending on your rack requirements.
- Gain: 0 ± 1 dB — preserves signal strength across outputs
- Impedance: 50 Ω — ensures standard RF matching
- Power Supply: 12 V DC via NT 12-35 CS, max 3 A with full system
Power Delivery and Connectivity – System Integration
Power distribution is handled internally, minimizing the need for extra power supplies and streamlining setup for complex productions.
- Booster Output: 12 V, 320 mA per input — powers antenna boosters directly from the splitter
- It supports multiple EW-D receivers per output, each supplied with 12 V, up to 500 mA.
- Current Draw: 210 mA (splitter only), max 3 A with full system
- Operating Temperature: -10 °C to +55 °C — built for harsh live and touring environments
Physical Design – Practical for Rackmount Integration
Designed for both mobile and fixed installations, the EW-D ASA uses space efficiently while maintaining durability.
- Standard rack shelves accommodate the 212 x 168 x 43 mm chassis with ease.
- Weight: 1.1 kg — easy to handle and install
- Included Accessories: NT 12-35 CS power supply, 8 BNC antenna cables
