Erthpot NEB-124W Extension Box

Erthpot NEB-124W Extension Box

The Erthpot NEB-124W is a high-performance active repeater and power expansion unit designed specifically for the NCS NOVO Conference System. In large-scale AV installations, this extension box serves as a critical bridge, providing the necessary 24V DC power and signal stability required to expand the microphone network beyond the capacity of the central control unit. By integrating the NEB-124W, system designers can reliably connect up to 30 additional microphone units per box, ensuring consistent audio performance and control data integrity across expansive conference environments. This unit is essential for transforming a standard meeting room into a large-scale assembly hall or parliament-style discussion space.

What is a Conference System Extension Box?

In professional digital discussion systems, the central controller typically has a physical and electrical limit on the number of delegate units it can power directly over a single cable run. A conference system extension box, such as the Erthpot NEB-124W, acts as an active repeater and power injector. Its primary purpose is to refresh the digital signal and replenish the DC voltage that naturally drops over long distances of Cat5 cabling.

Without an expansion unit, large installations would suffer from signal degradation and insufficient power to the furthest microphones in the chain. The extension box allows the system to branch out into multiple zones or continue a daisy-chain far beyond the standard limits. By providing localized power and signal amplification, these units ensure that every microphone, regardless of its distance from the main rack, operates with the same level of reliability and audio clarity. Furthermore, they facilitate cleaner cable management by allowing for localized hubs in multi-table or tiered seating layouts.

Key Features:

• System Expansion Capability: The NEB-124W is the primary tool for scaling the NOVO system. While the central controller manages the logic, the extension box provides the physical infrastructure to support up to 30 additional microphone units, allowing for a total system capacity of 110 units.
• Internal 72W/24V Power Module: Equipped with a robust power supply, the unit delivers stable 24V DC to the microphone network. This ensures that even high-current features like backlit buttons and LED rings on microphones function perfectly across the entire chain.
• Industrial Pressed Steel Enclosure: Designed for the rigors of permanent installation, the unit is housed in a sturdy and stylish pressed steel metal housing. This provides excellent RF shielding and physical protection for the internal electronics.
• Advanced Thermal Management: To maintain long-term reliability during high-power operation, the NEB-124W features a built-in cooling fan. This ensures that the power module operates within optimal temperature ranges even when the system is under full load for extended durations.
• Dual-Mode Visual Indicators: The unit includes a working indicator light on the front panel for instant status monitoring. A red light indicates the unit is in standby mode, while a blue light confirms it is actively working and providing power to the network.
• Flexible Installation Options: The mechanical design allows the NEB-124W to be fixed directly to walls or mounted discreetly to the bottom of conference tables, keeping the AV hardware out of sight while remaining accessible for maintenance.

Technical Specifications:

How Extension Boxes Work in Conference Systems?

The operational logic of the Erthpot NEB-124W is centered on the “Repeater” principle. The unit features two dedicated RJ45 network connectors: one for input and one for output. The input port receives the digital audio and control signal from the NCS110-CU central controller or a preceding microphone unit. Internally, the NEB-124W cleans the signal and injects fresh 24V DC power into the output stream.

The signal distribution follows the system’s daisy-chain topology. By placing an NEB-124W at strategic points in the wiring run—typically every 20 to 30 microphones—the integrator ensures that the voltage remains within the operational threshold for all downstream devices. This maintains audio stability and prevents “brown-out” conditions where microphones might disconnect or malfunction due to low voltage. The use of standard network cabling ensures that the integration remains cost-effective and compatible with modern structured cabling standards.

Ideal Applications:

• Large Conference Rooms: Perfect for corporate environments requiring high-density delegate seating across long boardroom tables.
• Government Meeting Halls: Provides the necessary expansion for municipality and council meeting spaces where 50 or more delegates participate.
• Parliament Chambers: Essential for legislative assembly installations that require the maximum 110-microphone capacity of the NOVO system.
• Convention Centers: Ideal for modular meeting spaces where the number of required microphones can change based on the event scale.
• University Conference Facilities: Supports large academic senate rooms and multi-purpose lecture halls with integrated discussion systems.
• Courtrooms: Ensures stable connectivity for judge, witness, and attorney stations across wide judicial complexes.
• Training Centers: Facilitates interactive learning in large classrooms by extending microphone reach to every student desk.

Benefits of Using Expansion Boxes:

The primary benefit of using the Erthpot NEB-124W is Scalability. System integrators are no longer limited by the physical port count or power budget of the central controller. This allows the system to grow with the facility’s needs. Furthermore, the use of extension boxes promotes organized wiring. Instead of running multiple home-run cables back to a central rack, a single cable can be run to an NEB-124W located near a cluster of microphones, reducing cable bulk and installation labor.

Another critical advantage is Reliable Signal Transmission. Active repeaters effectively eliminate the risks associated with electromagnetic interference and signal attenuation over long distances. In high-stakes environments like parliament chambers, the redundancy and stability provided by active power reinforcement are non-negotiable. Finally, the flexible system design enabled by these units allows for non-linear wiring paths, which is often required in complex architectural spaces or historical buildings where cable routing is restricted.

Role of Extension Boxes in Large Conference Installations:

In high-end AV architecture, the extension box is the “engine room” of the microphone network. For installations involving multi-table configurations, such as a main boardroom table plus peripheral seating, the NEB-124W allows for a centralized control logic while decentralizing the power distribution. This “Hub and Spoke” or “Zone-based” approach is the standard for professional system design.

By using the NEB-124W as a localized power hub, integrators can manage centralized conference control through the NCS110-CU while ensuring each seating zone has the power required for clear communication. This is particularly important when integrating camera tracking; stable signals from the expansion box ensure that the controller always receives accurate data about which microphone is active, triggering the PTZ cameras with millisecond precision.

FAQ:

System Compatible Components:

To ensure total system compatibility and maximum performance, the NEB-124W should be used in conjunction with these NOVO system products:

• NCS110-CU Central Controller: The primary processing unit for the Novo Conference System.
• NCS-5C/NCS-5D Microphone Units: Desktop chairman and delegate units powered by the NEB-124W.
• NCS-5CF/NCS-5DF Flushmount Units: Professional recessed microphones for high-end table integration.
• NGM516/NGM512 Microphones: Premium gooseneck and shotgun microphones compatible with the Novo series.

Professional Scaling for Modern Meeting Environments

The Erthpot NEB-124W Extension Box is a foundational component for any professional-grade conference installation requiring scalability and high reliability. By providing a dedicated 72W power module and active signal repeating in a durable steel chassis, it removes the technical barriers to large-scale system expansion. For AV consultants and system designers, the NEB-124W represents the gold standard for maintaining audio and control stability in the world’s most demanding discussion environments, from corporate headquarters to national parliament chambers.