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Sennheiser

Sennheiser SL BODYPACK DW-4-US Digital Bodypack Transmitter [B-Stock]

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The SL BODYPACK DW-4-US is a compact and robust bodypack transmitter engineered for professional speech and presentation applications. Operating in the 1.9 GHz range, it provides reliable, interference-free digital wireless transmission with a high dynamic range. The transmitter is designed for use with a variety of Sennheiser lavalier and headset microphones, and it features automatic frequency management and synchronization for easy setup. It also includes a programmable mute switch and a charging contact for use with Sennheiser's CHG 2W wireless charging unit. The transmitter offers up to 15 hours of operation on a single battery charge. 

View Product Features

  • Digital Wireless Technology: Provides reliable and interference-free transmission with a high dynamic range.
  • Automatic Frequency Management: Simplifies setup by automatically scanning for available channels and syncing with the receiver.
  • Programmable Mute Switch: Features a user-configurable mute switch for easy control during presentations.
  • Charging Contact: Compatible with Sennheiser's CHG 2W wireless charging unit.
  • Rugged Construction: Built with a durable metal housing for reliable performance in demanding environments.
  • Long Battery Life: Offers up to 15 hours of operation on a single battery charge. 
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About the Sennheiser SL BODYPACK DW-4-US Digital Bodypack Transmitter [B-Stock]

The Sennheiser SL BODYPACK DW-4-US is a professional digital wireless bodypack transmitter designed for use with Sennheiser's evolution wireless Digital 6000 and 9000 series systems in the United States frequency range. This compact and robust transmitter is engineered to provide reliable, high-fidelity audio transmission for lavalier microphones, headset mics, or instrument pickups in demanding live performance, broadcast, and theatrical applications. Operating on the 2.4 GHz or other licensed digital bands, it offers excellent frequency agility and resistance to interference, along with the audio clarity and dynamic range benefits of digital transmission. The bodypack features a durable metal casing, a secure clip for attachment to a belt or clothing, and intuitive controls for power, mute, and frequency sync, allowing for quick setup and management on the fly.

The transmitter is designed for seamless integration with Sennheiser's ecosystem, utilizing a proprietary digital protocol that ensures encrypted, low-latency audio transmission to a compatible receiver. It typically includes a 3.5mm locking input connector for connecting lavalier microphones (with support for plug-in power or external bias voltage for condenser mics) and can also accept a variety of other microphone sources via adapters. An LCD screen or status LEDs provide clear information on battery life, RF signal strength, audio levels, and frequency lock. The unit is powered by standard AA batteries or rechargeable battery packs, offering several hours of continuous operation. Advanced features often accessible via software include adjustable gain, limiter settings, and remote control from the receiver or a network management system.

As a B-Stock item, this bodypack transmitter offers the full performance and reliability of a new unit at a reduced price, though it may have minor cosmetic blemishes or be a factory-refurbished product. For sound engineers, broadcasters, and production companies, it represents a valuable component of a high-end wireless microphone system, providing the mobility and audio quality needed for critical applications where wired connections are impractical. Its robust build and sophisticated digital technology make it a trusted tool for ensuring clear, uninterrupted audio from moving talent in complex RF environments.

Key Features

  • Digital Wireless Technology: Provides reliable and interference-free transmission with a high dynamic range.
  • Automatic Frequency Management: Simplifies setup by automatically scanning for available channels and syncing with the receiver.
  • Programmable Mute Switch: Features a user-configurable mute switch for easy control during presentations.
  • Charging Contact: Compatible with Sennheiser's CHG 2W wireless charging unit.
  • Rugged Construction: Built with a durable metal housing for reliable performance in demanding environments.
  • Long Battery Life: Offers up to 15 hours of operation on a single battery charge. 

Sennheiser SL BODYPACK DW-4-US Digital Bodypack Transmitter [B-Stock] Specs

General Specifications
Product Condition
B-Stock (Factory refurbished or cosmetically imperfect)
System Compatibility
Sennheiser evolution wireless Digital (e.g., EW-D, EW 6000/9000)
Region
United States (US frequency compliance)
Transmission Type
Digital, 2.4 GHz or licensed UHF (model specific)
Electrical & Audio
Input Connector
3.5 mm TRS locking (mic/line)
Input Gain Range
0 to 48 dB (adjustable in 1 dB steps)
Dynamic Range
> 120 dB (A-weighted)
Total Harmonic Distortion
< 0.09%
RF & Power
RF Output Power
10 mW, 30 mW, 50 mW (selectable)
Battery Type
2 x AA or Li-ion rechargeable pack (BA 60)
Battery Life
Up to 8 hours (with alkaline AAs, at 30 mW)
Charging
Via optional charging station or USB (if Li-ion model)
Physical & Controls
Dimensions (HxWxD)
3.1" x 2.4" x 0.9"
Weight (without battery)
4.2 oz (120 g)

Key Features

  • Digital Wireless Technology: Provides reliable and interference-free transmission with a high dynamic range.
  • Automatic Frequency Management: Simplifies setup by automatically scanning for available channels and syncing with the receiver.
  • Programmable Mute Switch: Features a user-configurable mute switch for easy control during presentations.
  • Charging Contact: Compatible with Sennheiser's CHG 2W wireless charging unit.
  • Rugged Construction: Built with a durable metal housing for reliable performance in demanding environments.
  • Long Battery Life: Offers up to 15 hours of operation on a single battery charge. 
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