Education has always been a priority in China, and as technology advances, schools and universities keep upgrading their multimedia teaching equipment so that teachers can focus on teaching and efficiency keeps improving. Recently, a university in Guangdong set out to build more professional multimedia classrooms and needed a batch of stable, high-quality, professional microphone systems for education.
Customer Requirements
- One microphone across many classrooms. After finishing a lecture, a teacher moves between classrooms. The sound reinforcement system had to be convenient to use, without changing microphones again and again — one microphone should work in every room.
- Strong anti-interference. Multimedia classrooms run together with many electronic devices and hold large numbers of students, so the microphone system needed robust interference rejection to keep lectures running smoothly.
- High-quality sound pickup. The teacher’s voice had to reach every student clearly and in sync, without extra noise or signal dropouts.
The Solution: the “One Teacher, One Microphone” System with TM-500
The wireless audio solution was built on the Relacart TM-500 dual-channel true diversity wireless microphone system, forming a “one teacher, one microphone” sound reinforcement system: receivers are installed per classroom, and each teacher is equipped with a TM-5H handheld wireless microphone.
The key advantage of the system: each teacher only needs to carry one wireless microphone to walk through multiple classrooms — the microphone automatically connects to the receiver in whichever classroom they enter, with no complicated operation, greatly improving efficiency.
Technical highlights of the TM-500 system:
- True diversity dual-channel reception with UHF wideband operation; carrier frequency range 470–936.85 MHz (adapted to regional RF regulations)
- [IR] infrared automatic synchronization: place the transmitter close to the receiver and it locks onto the operating frequency instantly; 50 channel groups per band
- Relacart’s classic audio companding circuit minimizes noise over the radio link and preserves pickup quality
- BNC antenna connectors with antenna supply voltage, compatible with Relacart antenna distribution systems for extended range and stable signal
- TM-5H handheld microphone: compact pen-type design with advanced PLL technology, built-in removable lithium battery, USB Type-C charging, built-in laser pointer, ≥8 hours of continuous operation per charge, and QI-certified wireless charging support
Project Results
With the Relacart “one teacher, one microphone” sound reinforcement system, the university’s multimedia classrooms now deliver more efficient lectures and an excellent sound environment for teachers and students, winning high praise from the university. For 32 years since its founding in 1994, Relacart has remained a trusted name in high-quality, stable wireless audio.
