Sennheiser EW-D ASA (Q-R-S) Antennsplitter

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