Sennheiser SPECTERA SEK – Two-way IEM bodypack and UHF microphone transmitter

The Sennheiser SPECTERA SEK is an advanced two-way bodypack that combines the functions of a digital IEM (In-Ear Monitor) receiver and a microphone/line transmitter in one compact device. Operating in the UHF frequency ranges of 470-608 MHz and 630-698 MHz, the device ensures reliable and stable transmission in the most demanding professional environments – from concert stages and television studios to large corporate events. The Spectera SEK is the solution for those who demand the highest audio quality, full control, and maximum flexibility in managing wireless audio. It is not just equipment; it is a comprehensive system that revolutionizes the way sound engineers and artists work worldwide.

Product Features

The two-way bodypack Sennheiser SPECTERA SEK simultaneously manages the IEM/IFB signal and the microphone or line input signal, significantly reducing the number of devices needed on stage and shortening setup time. This innovative approach means that one compact transmitter-receiver replaces two separate devices, giving users more time for control and creativity, and less time managing components.

The device offers full remote control and monitoring via LinkDesk software – users can adjust IEM volume, microphone/line gain, check RF status, battery level, and many other parameters in real time. Thanks to two-way data and audio transmission over the same RF carrier, all mobile devices in the Spectera system remain in continuous communication with the base station.

The built-in high-power headphone amplifier with automatic impedance matching guarantees excellent sound quality in in-ear monitors, regardless of their characteristics. Meanwhile, continuous interference management ensures a stable and clean connection even in difficult electromagnetic conditions.

Professional Connectivity and Transmission Security

The Spectera system uses AES 256 encryption, ensuring secure transmission of confidential content – a key feature for corporate applications, television productions, and anywhere discretion and data protection are critical. The encrypted RF connection between the base station and the bodypack eliminates the risk of unauthorized signal interception.

The bodypack is equipped with an E-Ink display, which provides continuous access to essential information – the user name remains visible on the screen even after the battery is removed. Additionally, LED indicators (meter and status) allow for quick assessment of the device's condition from a distance, which is extremely useful during stage work or on a film set.

Control is handled via infinite encoders and a push button, ensuring intuitive and precise operation even with gloves or in low visibility. Connectors include a 3-pin microphone/line input (Se3PIN), a 3.5 mm TRS IEM/IFB headphone jack, and a SeCoax50 connector for the antenna.

Versatile charging options include the L 70 USB charger, the LM 6070 module compatible with the L 6000 charging station, and charging contacts on the device with the CHG 70N-C accessory. This allows users to adapt the charging method to their specific needs and technical infrastructure. The Spectera SEK is also compatible with a wide range of Sennheiser lavalier and headset microphones featuring a 3-pin locking connector, as well as in-ear monitors with a 3.5 mm connector, making the device suitable for diverse stage and studio configurations.

Applications

• Live performance – concerts, festivals, and live shows where reliability and sound quality are paramount
• Broadcast – television and radio productions requiring secure and stable transmission
• Theatre – theater, musicals, and plays where discreet and reliable wireless systems are essential
• Corporate events – corporate events, conferences, and presentations requiring professional sound management

Detailed Technical Specifications

• Frequency range: 470.000 - 608.000 MHz and 630.000 - 698.000 MHz
• Connection type: Wireless (RF)
• Connectors: 3.5 mm TRS (IEM/IFB headphone), Se3PIN (microphone/line), SeCoax50 (antenna)
• Color: Anthracite
• Power supply: BA 70 lithium-ion battery (sold separately)
• Operating time: Up to 7 hours, depending on audio link mode and settings
• Encryption: AES 256
• Display: E-Ink + LED indicators (meter and status)

Materials and Construction

The bodypack housing is made of durable metal, which provides excellent protection for internal components even under the most demanding working conditions. The robust construction guarantees long device lifespan and resistance to mechanical damage, which is essential for professional stage and mobile applications. The compact dimensions and lightweight design allow the device to be comfortably mounted on a belt, in a pocket, or on clothing, without restricting the user's freedom of movement.

Package Contents

• Sennheiser SPECTERA SEK (UHF) Bodypack
• User manual and documentation

Note: The BA 70 battery and other accessories (chargers, cables, microphones) are sold separately.

Summary

The Spectera SEK is a future-proof solution for professionals who need a reliable, secure, and fully configurable wireless system. Combining IEM receiver and microphone transmitter functions in one device saves time, space, and money, while advanced remote control and monitoring features make sound management easier than ever. With its durable metal construction, AES 256 encryption, and long battery life, this bodypack meets the expectations of even the most demanding users. If you value the highest audio quality, full control, and transmission security – this bodypack is made for you.