Evolution Wireless Digital EW-DX is Sennheiser’s professional digital UHF platform, offering AES 256 encryption, up to 88 MHz switching bandwidth, equidistant frequency grid and automatic frequency setup via the Smart Assist app or Wireless Systems Manager. This is the handheld transmitter on its own, intended to add a channel to an existing EW-DX system or replace a lost unit. Band variant: S1-10, 606 – 694 MHz (UK CH38 and above). Operation within UK CH38 is covered by an Ofcom shared PMSE licence; frequencies above 630 MHz require a coordinated licence.
Key Features
✓Professional digital UHF platform with AES 256 audio encryption
✓Up to 88 MHz switching bandwidth with equidistant frequency grid
✓134 dB transmitter input dynamic range, no audio gain staging required
✓Automatic setup via Smart Assist app or Wireless Systems Manager over network
✓Persistent e-ink display remains readable when the transmitter is powered down
✓Compatible with Sennheiser BA 70 Li-ion pack and CHG 70N networked charger
✓UK band S1-10: 606 – 694 MHz (UK CH38 and above)
✓Switching bandwidth: 200 kHz
✓Audio frequency response: 20 Hz – 20 kHz (-3 dB)
Specifications
| System | Audio link frequency ranges |
| System: R1-9 | 520 – 607.8 MHz |
| System: S1-10 | 606.2 – 693.8 MHz |
| System: S2-10 | 614.2 – 693.8 MHz |
| System: S4-10 | 630 – 693.8 MHz |
| System: U1/5 | 823.2 – 831.8 MHz & 863.2 – 864.8 MHz |
| System: V3-4 | 925.2 – 937.3 MHz |
| System: V5-7 | 941.7 – 951.8 MHz & 953.05 – 956.05 MHz & 956.65 – 959.65 MHz |
| System: X1-6 | 1350.2 – 1398.8 MHz |
| System: X9-18 | 1435.2 – 1524.8 MHz |
| System: Y1-3 | 1785.2 – 1799.8 MHz |
| System: Bluetooth Low Energy (BLE) frequency range | 2402 – 2480 MHz |
| System: Audio frequency response | 20 Hz – 20 kHz (-3 dB) |
| System: Dynamic range | 134 dB |
| System: System latency | 1.9 ms |
| System: Relative humidity | 5 – 95 % (non-condensing) |
| EW-DX SKM (Handheld Transmitter): Input voltage | 2.0 – 4.35 V |
| EW-DX SKM (Handheld Transmitter): Input current | < 300 mA |
| EW-DX SKM (Handheld Transmitter): Power supply | 2 AA batteries 1.5 V (alkali manganese) or BA 70 rechargeable battery pack |
| EW-DX SKM (Handheld Transmitter): Occupied bandwidth | 200 kHz |
| EW-DX SKM (Handheld Transmitter) | Transmit power (radiated) |
| EW-DX SKM (Handheld Transmitter): (Range Y1-3 | 12 mW ERP) |
| EW-DX SKM (Handheld Transmitter): LD mode | 10 mW ERP |
| EW-DX SKM (Handheld Transmitter): BLE | max. 10 mW EIRP |
| EW-DX SKM (Handheld Transmitter): (without microphone module) | 40 x 200 mm (1.57″ x 7.87″) |
| Sennheiser part number | 509414 |
| UK band | S1-10 (606 – 694 MHz (UK CH38 and above)) |
