Sennheiser Handheld Transmitter EW-DX SKM

Product Overview

The Sennheiser EW-DX SKM is a standalone handheld transmitter body for the EW-DX digital wireless platform, offering the same professional-grade performance as the SKM-S but without a mute switch — making it the preferred choice for applications where on-transmitter muting is unnecessary or undesirable. Like its sibling, the SKM ships without a capsule and uses the Sennheiser Standard Capsule Interface, giving integrators and users full freedom to select from Sennheiser's and Neumann's capsule portfolio. Powered by the proprietary SePAC codec with 134 dB dynamic range and backed by a persistent E-Ink display, in-device charging, and metal housing, the EW-DX SKM is built to the same tour-grade standard as the rest of the EW-DX family.

Product Description

The EW-DX SKM is the no-mute-switch variant of Sennheiser's flagship handheld transmitter body in the EW-DX digital UHF platform. Removing the mute switch simplifies the performer experience — there is no risk of accidental muting during a performance — which is why many broadcast engineers, AV integrators, and theatrical sound designers choose this configuration for talent who should not have direct control over their audio signal.

At its core, the EW-DX SKM uses Sennheiser's proprietary SePAC (Sennheiser Performance Audio Codec) to achieve a 134 dB input dynamic range. This codec-level dynamic handling means the transmitter adapts transparently to any source level — from a whispered conference presenter to a powerful live vocalist — without requiring manual gain intervention. Combined with the EW-DX platform's equidistant channel spacing and up to 88 MHz of switching bandwidth, the SKM is ready for dense multi-channel deployments in corporate, broadcast, and live performance environments.

Like all EW-DX transmitters, the SKM features in-device charging contacts for use with the CHG 70N charging dock, an E-Ink display that retains system information even when powered off, and a switchable low-cut filter with multiple frequency settings for different source types. The transmitter is fully managed via Sennheiser's Control Cockpit and Wireless Systems Manager software, and pairs quickly with EW-DX receivers. Capsules sold separately through Creation Networks include popular options like the MMD 835, MMD 845, and Neumann KK 204.

Key Features

• No Mute Switch — Clean, simplified transmitter design ideal for broadcast, theater, and applications where talent should not control audio on/off.
• 134 dB Input Dynamic Range (SePAC) — Proprietary codec delivers transparent performance across extreme source levels without gain adjustment.
• Sennheiser Standard Capsule Interface — Accept any compatible Sennheiser or Neumann capsule head (sold separately) for full sonic flexibility.
• 10 mW Fixed RF Power / 100 m Range — Consistent transmission power for reliable coverage up to 328 ft line of sight.
• Persistent E-Ink Display — Parameters stay visible on screen even when the transmitter is powered off, simplifying multi-unit inventory management.
• In-Device Charging Contacts — Charge with CHG 70N dock without removing the BA 70 battery from the transmitter.
• Up to 12 Hours Battery Life — With optional BA 70 Li-ion rechargeable battery; standard AA batteries also supported.
• Switchable Low Cut — High-pass filter selectable at Off, 30, 60, 80, 100, or 120 Hz.
• Digital Audio Trim & Test Tone Generator — On-board tools for quick system verification and level setting.
• Metal Housing — Rugged, professional build for touring and permanent installation applications.
• Network-Ready EW-DX Platform — Full integration with Control Cockpit, Wireless Systems Manager, and Smart Assist App.
• Up to 146 Simultaneous Channels — Equidistant tuning grid supports large-scale multi-channel deployments per band.

Typical Applications

• Broadcast and television studios where talent should not control their own mute
• Theater and performing arts productions with centralized audio control
• Houses of worship with operator-controlled wireless systems
• Corporate events and conference centers with managed wireless infrastructure
• Live touring with custom capsule configurations (capsule sold separately)
• System integrators building EW-DX channel packages with specific capsule requirements
• Educational institutions requiring tamper-resistant wireless microphone setups

Technical Specifications

Frequently Asked Questions

Q: What is the difference between the EW-DX SKM and the EW-DX SKM-S?

The key difference is the mute switch. The EW-DX SKM-S has a programmable mute switch (AF Mute, RF Mute, or Off). The EW-DX SKM does not have a mute switch, making it cleaner for applications where muting should be controlled at the receiver or mixing console rather than by the performer.

Q: Does the EW-DX SKM come with a microphone capsule?

No. The SKM is a capsule-free transmitter body. It accepts any capsule using the Sennheiser Standard Capsule Interface. Popular options include the MMD 835, MMD 845, MMD 865, Neumann KK 204, and KK 205. Contact Creation Networks for a complete compatibility list and to order a capsule alongside this transmitter.

Q: Which receiver does the EW-DX SKM pair with?

The EW-DX SKM is designed for EW-DX receivers (EM 2 or EM 4 series). It is also backward-compatible with EW-D receivers, though some advanced EW-DX features like Link Density mode and extended switching bandwidth require an EW-DX receiver.

Q: Why would I choose the SKM (no mute) over the SKM-S (with mute)?

The no-mute configuration is preferred in broadcast, theater, and corporate settings where the sound operator needs full control over the microphone signal without risk of a performer accidentally muting their mic. It also produces a cleaner transmitter surface, reducing operational errors on stage.

Q: Can the EW-DX SKM be charged without removing the battery?

Yes. The SKM features in-device charging contacts compatible with the Sennheiser CHG 70N network charging dock (sold separately). The optional BA 70 Li-ion battery supports in-transmitter charging for efficient multi-unit charging workflows.

Q: How many EW-DX SKM transmitters can I run simultaneously?

The EW-DX platform supports up to 146 simultaneous channels per band in equidistant tuning mode, and up to 292 in Link Density mode. The exact maximum depends on your receiver configuration and local RF conditions.

Q: Is the EW-DX SKM compatible with Sennheiser's remote management software?

Yes. The EW-DX SKM integrates fully with Sennheiser's Control Cockpit and Wireless Systems Manager (WSM) for network-based monitoring, configuration, and control. The Smart Assist mobile app provides Bluetooth-based setup and remote parameter adjustment.

Q: What is the E-Ink display for?

The persistent E-Ink display shows transmitter parameters such as frequency, name, and battery status. Unlike backlit LCD screens, the E-Ink display retains its information even when the transmitter is powered off, making it extremely useful for labeling and inventory management of multi-unit systems.