Sennheiser EW-D ME2 SET (R4-9) Digital Wireless Omni Lavalier Microphone System (R4-9: 552 to 607 MHz) - 508702

Product Overview

The Sennheiser EW-D ME2 SET (R4-9) is a professional single-channel digital wireless lavalier system operating in the 552–607.8 MHz frequency band. It pairs the acclaimed ME 2-II omnidirectional lavalier microphone with the SK EW-D bodypack transmitter and EW-D single-channel rackmount receiver to deliver broadcast-grade 24-bit audio in a streamlined, easy-to-deploy package. Built on the same technological foundation as Sennheiser's flagship Digital 6000 and 9000 series, the EW-D platform brings professional-tier wireless performance to presenters, educators, performers, and houses of worship at an accessible price point. At $699, it represents an exceptional value for anyone demanding reliable hands-free wireless audio.

Product Description

The Sennheiser EW-D ME2 SET (R4-9) delivers a complete wireless lavalier solution designed for professionals who need reliable, high-fidelity audio without the complexity typically associated with pro wireless systems. The ME 2-II omnidirectional lavalier captures natural, uncolored sound from any angle, making it ideal for presenters who move freely on stage or in front of a camera. The compact SK EW-D bodypack transmitter clips discreetly to clothing or a belt and syncs to the receiver wirelessly via Bluetooth using the Sennheiser Smart Assist app — no IR line-of-sight sync required.

At the heart of the system is the single-channel EW-D rackmount receiver, which employs Sennheiser's Intelligent Switching Diversity to maintain a rock-solid RF connection up to 328 feet (100 m) line of sight. The system's 134 dB dynamic range means you never need to adjust input sensitivity on the transmitter — it handles everything from whispered speech to projected voices with equal ease. The equidistant tuning grid, derived from the Digital 6000/9000 architecture, allows up to 90 channels to operate simultaneously in the R4-9 band (552–607.8 MHz) without frequency coordination headaches. With 2,240 available frequencies and auto-scan channel selection, finding a clean frequency takes seconds. The ultra-low 1.9 ms latency ensures that in-ear monitors and fold-back systems remain in perfect sync with the live sound. Battery life reaches 8 hours on a standard AA alkaline cell or up to 12 hours with the optional Sennheiser rechargeable battery pack, covering even the longest broadcast days and marathon conference sessions.

Key Features

• ME 2-II Omnidirectional Lavalier — Natural, uncolored sound capture from any angle; ideal for presenters, lecturers, and broadcast talent.
• 24-Bit Digital Audio — Broadcast-grade fidelity with pristine clarity free from the compression artifacts of analog companders.
• 134 dB Dynamic Range — Handles everything from soft speech to loud stage performances without requiring transmitter gain adjustments.
• R4-9 Frequency Band (552–607.8 MHz) — 56 MHz of UHF bandwidth with 2,240 selectable frequencies for interference-free operation in congested RF environments.
• Equidistant Tuning Grid — Up to 90 simultaneous channels without intermodulation; no frequency coordination software required.
• Bluetooth Smart Assist App — Set up and remotely control the entire system from an iOS or Android smartphone; no IR line-of-sight required for sync.
• Intelligent Switching Diversity Receiver — Single-channel half-rack receiver maintains signal integrity up to 328 ft (100 m) line of sight.
• 1.9 ms Ultra-Low Latency — Near-zero delay keeps IEM and monitor mixes perfectly synchronized with live sound.
• Flexible Battery Options — 8 hours on AA alkaline or up to 12 hours with Sennheiser rechargeable battery pack (BA 2015 / BA 2015 Accupack).
• Auto-Scan Channel Selection — Receiver scans and assigns the cleanest available frequency automatically at power-up.
• Mute Switch on Bodypack — Discreet on-body muting without interrupting the RF link.
• Half-Rack Receiver Form Factor — Two units pair side-by-side in a standard 19" rack using an optional rack kit.

Typical Applications

• Corporate presentations and boardroom AV
• University and K-12 classroom instruction
• Houses of worship — clergy and praise team
• Theater and performing arts productions
• Broadcast news and on-camera talent
• Conference centers and event production
• Fitness instructors and aerobics studios
• Museum and tour-guide audio systems

Technical Specifications

Frequently Asked Questions

Q: What is included in the EW-D ME2 SET (R4-9) box?

The set includes the EW-D single-channel rackmount receiver, the SK EW-D bodypack transmitter, the ME 2-II omnidirectional lavalier microphone (1.6 m cable), an AC/DC power adapter for the receiver, and documentation. An optional rack-mount kit is available separately.

Q: What does the R4-9 frequency band mean, and is it right for my location?

R4-9 designates the 552–607.8 MHz UHF range. Band availability varies by country and region — always verify local spectrum regulations before purchasing. If your region has congestion in that range, consider the R1-6 (520–576 MHz) variant instead. Contact us at creationnetworks.net for region-specific guidance.

Q: How many channels can I run simultaneously with the EW-D platform?

Up to 90 channels can operate simultaneously within the R4-9 band thanks to the equidistant tuning grid inherited from Sennheiser's Digital 6000/9000 systems. No third-party frequency coordination software is needed.

Q: Does the EW-D ME2 SET work with the Sennheiser Smart Assist app?

Yes. The receiver and bodypack both support Bluetooth connectivity with the free Sennheiser Smart Assist app (iOS and Android), enabling wireless setup, frequency assignment, gain control, and remote muting from a smartphone.

Q: Can I use rechargeable batteries in the SK EW-D bodypack?

Yes. The bodypack accepts standard AA alkaline batteries (8-hour runtime) or the Sennheiser BA 2015 / BA 2015 Accupack rechargeable battery pack (up to 12-hour runtime). Rechargeable packs are sold separately.

Q: Is the ME 2-II lavalier swappable with other Sennheiser microphones?

The SK EW-D bodypack uses a standard 3.5 mm locking connector compatible with a wide range of Sennheiser EW-series clip-on and headset microphones, giving you flexibility to swap capsules for different applications.

Q: What is the maximum operating range of this system?

The EW-D system is rated for up to 328 ft (100 m) line of sight. Real-world range will vary depending on RF environment, obstacles, and antenna placement. For larger venues, optional Sennheiser antenna boosters and splitters can extend coverage.

Q: How does the EW-D compare to the EW 100 G4 series it replaces?

The EW-D platform offers true 24-bit digital audio (vs. analog companding in the EW 100 G4), a dramatically wider 134 dB dynamic range, Bluetooth-based sync via the Smart Assist app, and an equidistant tuning grid supporting up to 90 simultaneous channels — a substantial upgrade in audio quality, setup speed, and scalability.