The conference hall of a provincial public security big data center needed a professional conference audio upgrade. The Relacart team surveyed the venue together with the client and discussed the equipment requirements in detail before the solution was drawn up.
The hall is spacious and bright, with a clean, formal interior and a large sound propagation space. Around 44 participants attend each session and more than 20 of them may speak. The client required equipment whose appearance matches the hall, adapts to the large room, delivers clear and stable sound transmission and supports real-time online discussion.
ER-5700 dual-channel true diversity wireless system
The ER-5700 uses true diversity reception: the receiver constantly selects the better of the two antenna signals, eliminating dead spots and preventing drop-outs. A stable PLL phase-locked oscillator circuit combined with noise-detection squelch effectively blocks RF interference in the working environment. The series covers the wide 522-936 MHz band, selects frequencies automatically and receives on two channels, while a microcomputer calculates mutually interference-free frequencies so the whole system stays stable and free from frequency drift.
WAM-432 automatic smart wireless mixer
The WAM-432 is a new-generation mixer built around a high-performance microcomputer processor, combining digital control with advanced audio processing and network technology for fully automatic, intelligent operation. It provides four channels of automatic mixing for one to four speakers, a priority function and an adjustable sound-on gate. Each channel receives over a 32 MHz bandwidth with true diversity FM superheterodyne reception, and the AFS function scans preset frequencies and the whole group to lock onto an interference-free working channel quickly and accurately.
The series accepts interchangeable transmitters - the UH-222 handheld, the UD-222 desk wireless microphone, the UT-222 bodypack and the UB-222 boundary microphone - and its encoder plus four-touch-switch layout makes every function and parameter easy to set. An optional AMC-20 automatic audio-video controller adds camera tracking by linking mixer data, audio mixing and an HD camera.
In this project the ER-5700 and the WAM-432 demonstrated stable signal transmission, clear sound and generous expansion capability, bringing real convenience to daily meetings of the big data center - a performance the client clearly recognized.
