Sennheiser SPECTERA DAD (1G4)

Sennheiser Spectera DAD (1G4) Bidirectional Digital Antenna Module

The Sennheiser Spectera DAD (1G4) (Article Number: 509170) is a ground-breaking, active directional transceiving antenna module engineered exclusively for the Sennheiser Spectera bidirectional wideband ecosystem. Leveraging revolutionary WMAS (Wireless Multichannel Audio Technology), the DAD (Digital Antenna Directional) functions simultaneously as both a transmitter and a receiver.

Operating in the 1G4 band (1350 - 1400 MHz and 1435 - 1525 MHz), this single hardware module manages in-ear monitor (IEM) transmission, microphone/line audio reception, and full bidirectional control data on a single wideband RF carrier. It completely eliminates the need for legacy RF outboard gear such as dedicated antenna combiners, splitters, or boosters.

Key Architectural and WMAS Ecosystem Attributes

• Simultaneous Bidirectional Operation: Unlike traditional narrowband workflows that require completely isolated antenna structures for microphones and IEMs, a single Spectera DAD processes audio and telemetry routing to and from the SEK bodypacks natively.

• Integrated RF Architecture: All necessary filtering, amplification, and signal combining are handled inside the active housing. This allows engineers to build high-capacity wireless grids by plugging the antenna straight into a Spectera Base Station via an Ethernet patch cable.

• Point-to-Point Network Streaming: The antenna digitizes audio right at the capsule array, transmitting data back to the base rack via standard CAT5e (or higher) cable over distances up to 100 meters. Power is delivered cleanly over the same line using standard Power over Ethernet (PoE Class 2).

• LinkDesk Continuous Interference Guard: Working in tandem with Sennheiser’s LinkDesk software, the DAD (1G4) acts as a live, high-resolution spectrum monitoring node. It continuously tracks localized RF behavior, dynamically managing interference without requiring manual frequency re-coordination mid-show.

• All-Weather Structural Armor: Designed for demanding outdoor stadiums, festivals, and remote broadcast trucks, the unit features an IP54-rated weather-resistant chassis that shields the internal array from rain, dust, and extreme temperatures.

Technical Specifications Matrix

Network Architecture and Signal Map

System Setup and RF Optimization Advice

Maximize Zone Redundancy: The Spectera Base Station accommodates up to four DAD antenna modules simultaneously. You can use these extra ports to create bulletproof antenna redundancy across complex stages, build isolated multi-room zones (e.g., stage, press room, and green room), or extend your spectrum tracking coverage without adding messy RF distribution networks.

Mind the Network Cable Shielding: Because the Spectera DAD translates high-bandwidth digital data over long runs, always deploy high-quality, shielded twisted-pair (STP) network cabling (CAT5e, CAT6, or CAT7) with ruggedized tactical jacketing. Using unshielded consumer patch cords leaves your system exposed to heavy electromagnetic interference from nearby LED video walls or stage lighting rigs.