Sennheiser Digital wireless base set with EW-DX EM 2 receiver, EW-DK SKM-S transmitter and EW-DX bodypack, frequency range: V5-7 (941.700-951.800 & 953.050-956.050 & 956.650-959.650). Part 74 license required.

Product Overview

The Sennheiser EW-DX SK/SKM-S Base Set (V5-7) is a two-channel digital UHF wireless system built for commercial AV integrators, live production, corporate, and house of worship deployments requiring a flexible capsule-agnostic wireless platform. The set includes the EW-DX EM 2 two-channel rack receiver, one EW-DX SKM-S handheld transmitter with mute switch, one EW-DX SK bodypack transmitter, and two BA 70 rechargeable batteries. Microphone capsules are sold separately, allowing integrators to match the system to application-specific requirements. Operation in the V5-7 frequency range (941.700–959.650 MHz) requires an FCC Part 74 license.

Product Description

The EW-DX SK/SKM-S Base Set is designed for AV integrators and production professionals who require a scalable, network-ready digital wireless foundation that can be paired with their preferred microphone capsules. The EW-DX EM 2 rack receiver supports 88 MHz switching bandwidth and the SePAC codec for 1.9 ms latency and 134 dB input dynamic range across both channels — eliminating manual gain adjustment at the transmitters in mixed-use commercial environments. AutoScan deploys intermodulation-free equidistant channels automatically: up to 146 in Standard Mode (600 kHz spacing) or up to 293 in Link Density Mode (300 kHz spacing). The EW-DX SKM-S handheld features an E-Ink display that retains parameter information even when batteries are removed, and function buttons allow full settings control directly from the transmitter body. The EW-DX SK bodypack shares the same metal housing platform with in-device charging support. Both transmitters support Bluetooth-based setup and remote monitoring through the Sennheiser Smart Assist app. The system integrates with Sennheiser Control Cockpit and Wireless Systems Manager for IT-grade remote monitoring, and supports third-party AV control platforms via plug-in. The V5-7 frequency range requires a current FCC Part 74 license for US operation.

Key Features

• Capsule-Agnostic Handheld Transmitter — EW-DX SKM-S accepts a wide range of Evolution Wireless Digital microphone capsules, sold separately to match the application.
• E-Ink Display on SKM-S — Persistent E-Ink display retains parameter data without power, readable during transmitter changes and battery swaps.
• In-Device Charging (SK Bodypack) — EW-DX SK supports in-device charging via compatible Sennheiser charging stations.
• 12-Hour Battery Runtime — Two included BA 70 rechargeable batteries power the system through full-day production schedules.
• SePAC Codec — 1.9 ms Latency, 134 dB Dynamic Range — Eliminates gain-setting on transmitters; handles high-SPL sources without clipping.
• 88 MHz Switching Bandwidth — Up to 293 intermodulation-free channels in LD Mode for multi-system installations.
• AutoScan Frequency Deployment — Automatically finds and assigns clean frequencies with equidistant spacing in congested RF environments.
• Bluetooth Smart Assist App — iOS/Android app for Bluetooth-based pairing, setup, and remote monitoring of transmitter parameters.
• AES 256 Encryption — Encrypts all wireless audio transmission for secure government, corporate, and broadcast deployments.
• EW-DX EM 2 2-Channel Rack Receiver Included — Half-rack 9.5-inch receiver with PoE power, Ethernet control, and compatible analog outputs.

Typical Applications

• House of worship wireless microphone systems (handheld + lavalier)
• Corporate conference room and all-hands room presentations
• Broadcast studio wireless talent microphone systems
• Training room and education wireless microphone deployments
• Auditorium and multi-purpose room AV installations
• Government and municipal presentation spaces

Technical Specifications

Frequently Asked Questions

Are microphone capsules included with this set?

No. The EW-DX SK/SKM-S Base Set ships without microphone capsules. The EW-DX SKM-S handheld accepts any compatible Evolution Wireless Digital capsule head. Capsules are available separately at creationnetworks.net/collections/sennheiser.

Does this set require an FCC license?

Yes. The V5-7 frequency range (941–959 MHz) requires an FCC Part 74 license, typically held by broadcast licensees or qualified production entities.

Can the SK bodypack and SKM-S handheld be used simultaneously on different channels?

Yes. The included EW-DX EM 2 receiver is a two-channel unit, so both transmitters operate independently on separate channels at the same time.

What charging options are available for the bodypacks and handhelds?

The EW-DX SK bodypack supports in-device charging via Sennheiser’s CHG 2 charger, sold separately. The BA 70 batteries included with the set are also rechargeable via compatible Sennheiser chargers.

Does this system integrate with Q-SYS or Crestron control systems?

Yes. The EW-DX EM 2 receiver supports third-party control integration via available Q-SYS and Crestron plug-ins, as well as Sennheiser’s own Control Cockpit and Wireless Systems Manager software.

What is the warranty on this system?

Sennheiser provides a standard 2-year warranty on EW-DX products. Contact your dealer or Sennheiser support for extended coverage options.