The Sennheiser EW-D ASA (1350–1805 MHz) is an active antenna splitter for Evolution Wireless Digital systems, distributing two antenna signals to up to eight EW-D EM receivers. Configurable as 2 x 1:4 or 1 x 1:8, it removes the need for individual antenna pairs on every receiver and feeds DC power to connected receivers down the same coax — a clean, rack-friendly solution for multi-channel deployments operating in the 1.8 GHz band.
Compatibility
This is the X-Y variant covering 1350–1805 MHz, intended for Evolution Wireless Digital (EW-D) systems running in the 1.8 GHz band. It supplies DC power to connected EW-D EM receivers and accepts EW-D AB active antennas.
Features
✓Active splitter, configurable as 2 x 1:4 or 1 x 1:8
✓Feeds up to eight EW-D EM receivers from a single antenna pair
✓Supplies DC power to connected receivers over coax
✓Unity gain (0 ± 1 dB) preserves signal level across all paths
✓High linearity with IIP3 > 25 dBm
✓Supplied with NT 12-35 CS PSU and 8x BNC antenna cables
Specifications
| Manufacturer | Sennheiser |
| Model | EW-D ASA (1350–1805 MHz) |
| Article number | 508881 |
| Type | Active antenna splitter, 2 x 1:4 or 1 x 1:8 |
| Frequency range | 1350–1805 MHz |
| Impedance | 50 Ω |
| Gain | 0 ± 1 dB |
| IIP3 | > 25 dBm |
| Reflection loss | 10 dB (all RF outputs) |
| Power supply | DC +12 V via NT 12-35 CS |
| Current consumption | 210 mA (max. 3 A with 4 EW-D EM and connected EW-D AB) |
| Operating temperature | -10 °C to +55 °C |
| Dimensions | 212 x 168 x 43 mm |
| Weight | approx. 1100 g |
| In the box | EW-D ASA splitter, NT 12-35 CS power supply, 8x BNC antenna cables |
