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SENNHEISER

Spectera SEK (1G4)

Wireless Receivers

Wireless bodypack, 1350–1525 MHz, 112 dB dynamic range, AES 256 encryption, 48 kHz sampling, low-cut filter, 3.5 mm TRS, dual 400 mW output, no battery included

$2,695.00 CAD
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Description

The SPECTERA SEK Bodypack Transmitter is a professional-grade wireless solution engineered for demanding broadcast and bi-directional communication environments. Designed with advanced digital transmission technology and a robust feature set, this compact bodypack provides reliable, high-fidelity audio in challenging RF conditions. Its operation spans a wide frequency range of 1350–1400 MHz and 1435–1525 MHz (subject to regional limitations), ensuring flexible deployment across various locations.

Featuring a dynamic range greater than 112 dB(A) and a 48 kHz sampling rate, the SPECTERA SEK delivers crisp, detailed audio ideal for live broadcast and production use. It includes adjustable gain (-6 to -42 dB in 1 dB steps), a low-cut filter with multiple frequency options, and versatile line/mic level inputs, giving operators precise control over audio input. With support for AES 256 CTR encryption and the OPUS codec, the unit also provides secure and efficient audio transmission using Multicarrier, TDMA, and TDD methods.

Housed in a durable anthracite-colored chassis, the bodypack includes a 3-pin audio socket input, a 3.5 mm TRS output, and can drive headphones with 2 × 100 mW at 16 ohms. Despite its rugged design, the device is lightweight and compact, making it ideal for extended wear in high-mobility use cases. The system operates without an included battery but supports battery packs and external power solutions.

Features

Reliable Wireless Audio Performance
Delivers strong, interference-free transmission with intermodulation-free operation.

Flexible Frequency Range
Supports a wide tuning range (550.000 – 607.800 MHz) for use in various regions.

Compatible with Multiple Capsules
Works with Sennheiser and Neumann capsule heads via a standard capsule interface.

Secure Signal Encryption
Provides AES 256 and Digital 9000 encryption for protected audio transmission.

Long Battery Life
Operates up to 5.5 hours with an optional lithium-ion battery pack.

Lightweight and Durable Design
Built with a magnesium housing for strength and easy handling during live use.

Complete Starter Kit
Includes the SKM 6000 handheld transmitter, mic clip, and both quick and safety guides (capsule sold separately).

Specifications

General Specifications
Device Type: Bidirectional Bodypack Transmitter
Model: Spectera SEK (1G4)
Color: Anthracite
Applications: Broadcast
Encryption: AES 256 CTR Mode exp. >10k years
Codecs: OPUS
Transmission Method: Multicarrier, TDMA, TDD
Multipack: False
On/Off Switch: Yes
Display: E-Ink Persistent Display
User Interface: Endless Encoder and Push Button
Housing: Rugged Metal
Remote Monitoring: Via LinkDesk (IEM volume, gain, RF, battery, settings)
Audio Link Modes: Multiple (mode-dependent performance)

Gain
Gain Range: -6 dB to +42 dB (1 dB steps)

Frequency Specifications
Frequency Range: 1350 – 1400 MHz; 1435 – 1525 MHz (countrywise limited)
Audio Frequency Response: 20 Hz – 20 kHz (±1 dB)
Headphone Output Frequency Response: 20 Hz – 20 kHz (±1 dB)
Min. Channel Spacing: Matches to used bandwidth mode
RF Sensitivity: TBD per ALM

Acoustic Properties
Dynamic Range: >112 dB(A)
Sampling Rate: 48 kHz
Audio Output Level: 2 x 400 mW RMS (16 Ω, -40 dB THD, 1 kHz)
Headphone Output Power: 2 x 100 mW @ 16 Ω @ -40 dB THD (1%)
Low-Cut Filter Frequencies: 20, 30, 60, 80, 100, 120 Hz
Line / Mic Level: MIC: max 7 Vpp (-30 dB THD+N, 1 kHz); LINE: max 9 Vpp (-30 dB THD+N, 1 kHz)
Latency: TBD per ALM

Connectivity
Connection Type: Wireless
Connectors: 3.5 mm TRS (Headphone), 3-pin Audio Socket (Mic/Line Input)

Input/Output
Microphone Input Connector: 3-pin audio socket
Microphone Input Impedance: 22 kΩ

Battery & Power
Battery Included: No
Battery Type: BA 70 Lithium-Ion (sold separately)
Operating Time: Up to 7 hours (depending on Audio Link Mode and settings)
Charging Options: L 70 USB, LM 6070 (L 6000 rack), CHG 70N-C in-device contacts

Electrical Properties
Transmission Power: Up to 50 mW (countrywise limited)

Ambient Conditions
Storage Temperature: -25 °C to +70 °C (-13 °F to 158 °F) (without battery)
Storage Relative Humidity: 25 – 95% (non-condensing)
Operating Temperature: -10 °C to +50 °C (14 °F to 122 °F)
Operating Relative Humidity: 25 – 95% (non-condensing)

Dimensions
Product Length: 243 mm
Product Width: 124 mm
Product Height: 41 mm
Package Length: 246 mm
Package Width: 123 mm
Package Height: 43 mm

In the Box
Spectera SEK Bodypack Transmitter
Spectera SEK Antenna
Belt Clip
Quick Guide
Safety Guide
Manufacturer Declaration Sheet

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