Sennheiser SL Bodypack - HM 1 KIT Receiver

Product Overview

The Sennheiser SL Bodypack HM 1 KIT is a complete SpeechLine Digital Wireless system pairing the SL Bodypack DW transmitter with the SL Headmic 1 SB headset microphone. Designed for presenters, educators, and performers who require hands-free operation and professional audio quality, the kit delivers secure digital transmission in the 1.9 GHz DECT frequency band. Variants are available in DW-3, DW-4, DW-5, and DW-6 frequency slots to accommodate regional spectrum regulations and multi-system deployments.

Product Description

The SL Bodypack DW transmitter at the core of this kit features bi-directional communication with compatible SpeechLine receivers, enabling automatic frequency coordination and interference management without manual transmitter adjustments. An LC display on the transmitter shows the radio link name, battery charge level, and reception quality at a glance. A conveniently located mute switch allows the user to silence the microphone instantly when needed, and the transmitter supports remote control from the receiver side for additional operational flexibility.

Power is supplied by a rechargeable lithium-ion battery pack with external charging contacts, enabling charging directly in Sennheiser's compatible charging stations. A USB port provides an alternative charging path. Rated battery life reaches up to 15 hours per charge, making the system suitable for full-day events without mid-session battery swaps. All audio transmission is protected by 256-bit AES encryption, meeting the security requirements of sensitive environments such as boardrooms and government facilities.

The included SL Headmic 1 SB headset microphone uses an omnidirectional MKE 1 capsule optimized for clear speech reproduction. Its adjustable neckband accommodates a wide range of head sizes, and the metal frame keeps the total weight to approximately 7 grams — light enough for extended wear during long presentations or performances. A lockable 3.5 mm jack connects the headset to the bodypack with a secure, rattle-free connection. The kit is completed by a soft carry case that holds both the bodypack and the headset for organized transport and storage.

Key Features

• SpeechLine Digital Wireless (DECT band) — Operates in the license-free 1.9 GHz DECT spectrum for interference-resistant, dedicated speech transmission.
• Automatic Frequency and Interference Management — Bi-directional transmitter-receiver communication eliminates manual channel coordination.
• 256-Bit AES Encryption — Secures audio transmissions in sensitive environments including boardrooms, government chambers, and education facilities.
• Up to 15 Hours Battery Life — Built-in Li-Ion battery pack with external charging contacts supports full-day operation on a single charge.
• USB Charging Port — Provides a convenient secondary charging option when a charging station is unavailable.
• LC Display — Shows link name, battery status, and reception quality for quick on-stage monitoring.
• Accessible Mute Switch — Allows the presenter to silence the mic instantly; also remotely controllable from the receiver.
• Lockable 3.5 mm Jack — Secure connection prevents accidental disconnection during active use.
• SL Headmic 1 SB with Omnidirectional MKE 1 Capsule — Delivers natural, consistent speech pickup regardless of head position.
• Lightweight Metal Frame (approx. 7 g) — Robust yet comfortable for extended wear during presentations, lectures, and performances.
• Multiple DW Frequency Variants (DW-3, DW-4, DW-5, DW-6) — Enables regional compliance and co-deployment of multiple systems without interference.
• Soft Carry Case Included — Stores both bodypack and headset for secure, organized transport.

Typical Applications

• Corporate presentations and executive briefings
• Houses of worship and religious services
• Theater productions and live stage performances
• University lectures and classroom instruction
• Government chambers and council meetings
• Conference rooms and boardrooms requiring encrypted audio
• Training facilities and seminar venues

Technical Specifications

Frequently Asked Questions

Q: What is the difference between the DW-3, DW-4, DW-5, and DW-6 frequency variants?

Each variant operates on a different frequency slot within the 1.9 GHz DECT band. The appropriate variant depends on regional spectrum allocation — DW-3 and DW-6 are priced at $769, while DW-4 is $899. Confirm the correct variant for your region before purchasing.

Q: Does the SL Bodypack DW work with other Sennheiser microphones besides the included headset?

Yes. The SL Bodypack DW is compatible with all Sennheiser neckband and lavalier microphones that use a 3.5 mm connector, including the SL Headmic 1 and MKE 1 series.

Q: Is a separate receiver required to complete this system?

Yes. This kit includes the bodypack transmitter and headset microphone only. A compatible SpeechLine receiver, such as the SL Multi-Channel Receiver DW, is required and sold separately.

Q: How is the bodypack charged?

The SL Bodypack DW can be charged via its external charging contacts when placed in a compatible Sennheiser charging station, or via the onboard USB port for standalone charging.

Q: How is the audio secured during transmission?

All audio is encrypted with 256-bit AES encryption, providing protection against eavesdropping in sensitive environments such as boardrooms and government chambers.

Q: Can multiple SL Bodypack systems operate simultaneously in the same space?

Yes. The SpeechLine Digital Wireless platform supports multi-channel operation. The number of simultaneous channels depends on the receiver used and the specific DW frequency variants deployed.

Q: What does the LC display on the bodypack show?

The display shows the name of the active radio link, the current battery charge level, and the reception quality — giving the presenter or technician quick status confirmation without accessing the receiver.

Q: Is the SL Headmic 1 SB comfortable for extended use?

Yes. The headset weighs approximately 7 grams, features an adjustable neckband to fit different head sizes, and uses a robust metal frame. The omnidirectional capsule allows natural head movement without affecting audio pickup.