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| EW-D | EW-DX | evolution wireless 300 G4 |
SpeechLine Digital Wireless |
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| Audio transmission | Digital | Digital | Analogue | Digital |
| Technology | UHF system – worldwide usage (subject to local regulations) | UHF system – worldwide usage (subject to local regulations) | UHF system – worldwide usage (subject to local regulations) | DECT system – subject to country-specific regulation and not allowed in all the regions |
| Application | Microphone system created for versatile applications – suitable for education/corporate environments |
Microphone system created for versatile applications – suitable for education/corporate environments |
A well-established wireless analogue microphone system for corporate, education, governmental and hospitality applications |
Microphone system optimized for IT with full scale remote controllability. Designed specifically for speech applications |
| AV knowledge requirements | Minimal to moderate level of AV knowledge | Minimal to moderate level of AV knowledge |
Moderate to advanced |
Minimal level of AV knowledge |
| Operation time | Up to 12h | Up to 12h | Up to 8h | Up to 18h |
| Remote monitoring and control | No network connector - Sennheiser Control Cockpit or 3rd party applications cannot be used for maintenance and control |
Good level of integration and control. Sennheiser Control Cockpit and 3rd party applications integration. No bi-directional communication between transmitters and receivers, so full remote control is not possible | Limited level of control and monitoring via Sennheiser Control Cockpit and 3rd party applications | Bi-directional communcation between transmitters and receivers - full remote control/monitoring via Sennheiser Control Cockpit /Media Control for the campus-wide audio applications |
| Frequency coordination | Frequency coordination might be needed - if a frequency is disturbed, a new frequency has to be selected manually | Frequency coordination might be needed - if a frequency is disturbed, a new frequency has to be selected manually | Frequency coordination is needed - if a frequency is disturbed, a new frequency has to be selected manually |
Automatic interference management – no frequency coordination needed |
| Channel count | Equidistant frequency spacing allows to fit more channels per band. Standard channel count estimate is up to 90 channels per band | Equidistant frequency spacing allows to fit more channels per band. Standard channel count estimate is up to 146 channels in Standard Mode and up to 293 in LD mode | Up to 32 channels per band |
Channel count varies depending on the region - up to 20 channels in Europe; up to 10 channels per room in the US |
| Encryption | No | Secure content transmission with AES-256 encryption | No | Secure content transmission with AES-256 encryption |
| Campus-wide usage | Frequency coordination required for campus wide usage | Frequency coordination required for campus wide usage | Frequency coordination required for campus wide usage | Multi-room feature for campus wide audio - no manual frequency coordination is required |
| Antenna setup | Due to receiver in rack, usage of external antennas, splitters, cables and proper planning are required |
Due to receiver in rack, usage of external antennas, splitters, cables and proper planning are required |
Due to receiver in rack, usage of external antennas, splitters, cables and proper planning are required |
No complicated antenna set up needed, SpeechLine multi-channel receiver (MCR) could be mounted on a wall or ceiling and just requires a network cable |
| Receivers and options | 1-channel receiver (without Dante options). Requires rack space | 2-channel/4-channel receiver variants; Dante options (EW-DX EM 2 Dante/ EW-DX EM 4 Dante). Requires rack space | 1-channel half-rack receiver. Requires rack space | SL MCR DW is an IT proven multi-channel receiver allowing for installations without complicated antenna setups. Does not require rack space |
| Transmitters and options | Handheld and bodypack transmitters | Handheld, bodypack and tablestand transmitters | Handheld and bodypack transmitters | Handheld, bodypack, tablestand and boundary transmitters |
| Latency | 1.9 ms latency | 1.9 ms latency | Analogue system: no latency | 19 ms latency |
| > Learn more | > Learn more | > Learn more | > Learn more |
