CROWN EOL BOX - End-of-line terminator

CROWN EOL BOX - End-of-line terminator

The CROWN EOL BOX is an end-of-line (EOL) terminator designed for audio systems with constant in-line speaker distribution, leveraging a 20 kHz pilot tone to detect open and short circuit conditions. Located at the far end of the speaker circuit, its 20 kHz reactive design allows current changes to be measured using HiQnet Audio Architect™ software, ensuring continuous monitoring and reliable fault detection. Featuring a selectable 10 Ω or 5 Ω load at 20 kHz, via a convenient external impedance switch, the EOL BOX integrates with DCi Network , Dante and USP4 CTs series amplifiers, also allowing the pilot tone to bypass the speaker’s internal processing for accurate analysis.

Main features

• End-of-line terminator for open and short circuit detection.
• Passive and reactive at 20 kHz for accurate current measurement.
• Selectable impedance loading: 10 Ω or 5 Ω at 20 kHz.
• 20 kHz pilot tone mixed with the audio signal.
• Compatible with DCi Network, Dante and USP4 CTs amplifiers.
• Monitoring using HiQnet Audio Architect™.
• External impedance switch for quick selection.
• Installation at the end of the speaker circuit.

Product benefits

• Continuous monitoring: Detects faults in real time and prevents outages in distributed networks.
• Easy installation: Compact design and easily accessible external switch.
• High reliability: Passive and maintenance-free construction.
• Advanced Control: Monitoring and configuration from HiQnet Audio Architect™.
• Versatility: Integration with multiple amplifier families and DSP systems.

Use cases

• Fault detection in 70V/100V loudspeaker networks in shopping malls, airports and corporate buildings.
• Supervision of public address circuits and emergency systems in public facilities.
• Distributed audio monitoring in theaters, auditoriums, and convention centers.

Frequently Asked Questions

• How do I select the load impedance? Use the external switch to choose between 10 Ω or 5 Ω at 20 kHz.
• Does it require power? No; it's completely passive and operates on the audio signal.
• Do I need additional software? Yes; HiQnet Audio Architect™ to generate and monitor the pilot tone.

Description for projects

Passive end-of-line terminator for daisy-chain audio systems, reactive at 20 kHz, selectable 10 Ω or 5 Ω load, placement at the end of the speaker circuit, compatible with DCi Network, Dante and USP4 CTs amplifiers, monitoring via HiQnet Audio Architect™, external impedance switch.