The central controller of the Bronx DIALOGUE wired conference chain. Built on the BRONX-LINK digital ring network, it carries up to 64 channels of lossless audio over a single CAT5e cable and expands to 5,200 discussion units, with date, time and count-down management, USB recording and an optional Dante output module.
Specifications as per the official Bronx BR-DCU-CU1000-D datasheet (2026, Rev. A). Specifications may change without prior notice.
The BR-DCU-CU1000-D is the heart of a Bronx digital conference system. Using BRONX-LINK ring-network technology, a single CAT5e cable carries up to 64 channels of lossless audio and system data between units, in a “Hand-in-Hand-Loop-Network” topology that keeps the system running as units are added, changed or fail. Each unit is automatically assigned a unique ID to avoid conflicts, hot-swap is supported with controller auto-recovery, and the system expands to as many as 5,200 discussion units — suited to boardrooms, ministries, courtrooms and broadcast halls.
Standalone settings need no PC software: set how many delegate units are active at once, choose a discussion mode (Open, Apply, Voice or Override) and run voting directly from the chairman unit.
| Power | 100 – 240 V AC |
| Static power consumption | 150 W |
| Maximum power consumption | 150 W |
| Unit power supply | 48 V DC |
| Recording / playback bit rate | 64 / 96 / 128 / 256 Kbit/s |
| Dynamic range | > 94 dB |
| Signal-to-noise ratio (S/N) | > 96 dB |
| Channel crosstalk | > 96 dB |
| THD | < 0.05% |
| Frequency response | 20 Hz – 20 kHz |
| Nominal loudspeaker output | 72 dB SPL |
| Audio input | 2-channel, XLR or RCA — local sources or remote video-conferencing (optional input box adds condenser / dynamic microphone support) |
| Audio output | Up to 3-channel, XLR / RCA / Phoenix |
| RS-232 control | 1 × 9-pin sub-D female, 1 × 9-pin sub-D male |
| Ethernet control | RJ45 — connect computer for control |
| Camera control | RS485 or RS232, PELCO / VISCA protocol for auto-tracking |
| Optional module | Dante output module |
| Dimensions | 481 (L) × 265 (W) × 46 (H) mm — 1U rack |
| Colour | Black |
| Weight | 3 kg |
| Operating temperature | −5 °C to +50 °C |
| Relative humidity | 5% – 98%, non-condensing |
Full-digital signal transmission and processing across the whole conference chain.
High-fidelity, lossless audio at 48 kHz sampling with 20 Hz – 20 kHz response.
Scales from a small boardroom to a large hall without changing the architecture.
Units get independent IDs automatically; any unit can be changed or can fail without stopping the system.
OPEN, APPLY (request then speak), VOICE (voice-activated) and OVERRIDE (first-in, first-out), with a 1 / 2 / 4 / 6 active-speaker limit.
Approve / abstain / object voting; the chairman can close or mute all units and grant requests to speak.
Records with advanced noise cancellation for clearer capture.
RS485 / RS232 sends PELCO / VISCA commands to follow the active speaker.
Interoperates with other Dante audio equipment.
Send us your room dimensions — we'll recommend a configuration.