All-in-One Infrared Teaching Amplifier
IR-230MD
2×30W/50W Class-D power, infrared wireless transmission, DSP feedback suppression and constant-voltage broadcast priority, built for classrooms, training rooms and multi-function halls.
Lossless Infrared Transmission
Audio travels on infrared light, immune to electromagnetic interference and hard to intercept. Two channels let two microphones work at once with no crosstalk.
Green · No radiationDSP Feedback Suppression
A built-in DSP circuit removes howling from one metre away, so students hear every word and teachers no longer strain their voices.
Intelligent anti-howlingRJ45 Sensor Expansion
A standard RJ45 interface carries the signal up to 100 metres and supports four infrared sensors through the dedicated splitter, leaving no dead zones.
Easy install · StableBroadcast Priority Input
Accepts 25V, 70V and 100V constant-voltage inputs with emergency paging priority, so campus announcements always take precedence over the lesson.
Campus broadcast linkage- Class-D amplification with silent cooling — 2×30W into 8Ω or 2×50W into 4Ω, fanless and therefore entirely silent inside the classroom.
- DSP sound optimisation — an on-board DSP chip tailors the output to the loudspeaker's characteristics for a more refined, natural result.
- Compact 1U chassis — a sandblasted anodised aluminium panel at 210×186×44.5mm, saving space whether placed on a desk or mounted in a rack.
- Wide-voltage supply — runs from a DC12V–24V adapter with an AC100–260V to DC24V unit supplied as standard.
- Comprehensive protection — short-circuit, DC and over-temperature protection keep the unit running for years.
- Generous connectivity — two AUX line inputs, a 6.35mm microphone input, an independent 3.5mm microphone output and a line output.
- Independent infrared levels — channels A and B adjust separately, so balancing two microphones is straightforward.
- Green and safe — infrared is harmless to the human body and carries no radio licensing burden.
Recommended Pairing: RH-MS720D All-Weather Wall Speaker
- Two-way, all-weather design — an all-aluminium grille that never rusts and a sturdy PP enclosure, suitable indoors and out.
- Flexible input modes — a rear switch selects 8Ω, 70V or 100V to match different amplifier systems.
- Multiple power taps — 70V: 20W/10W/5W/2.5W/1.25W; 100V: 20W/10W/5W/2.5W; 8Ω rated 20W.
- Hi-Fi drivers — a 4-inch 25-core mid-bass plus a 20-core mylar tweeter, 80Hz–18kHz response and 87±3dB sensitivity.
- Simple mounting — an adjustable bracket is supplied, tilting horizontally and vertically to cover the listening area.
- Compact size — 146×138×238mm without the bracket, 1.85kg net per unit.
- Wide application — multimedia classrooms, hotels, cafes, fitness centres and other indoor or outdoor settings.
Optimised for the Classroom
The IR-230MD with RH-MS720D loudspeakers delivers clear, howl-free sound that shrugs off interference. Broadcast priority keeps campus announcements ahead of the lesson, infrared removes crosstalk, and dual microphones support interactive teaching. The slim 1U chassis fits on a podium or in a rack, and the fanless design keeps the room quiet.
Build a Howl-Free, High-Fidelity Teaching Space
The IR-230MD keeps every lesson clear, and with all-weather loudspeakers it handles classrooms and training rooms of every kind.
* Full infrared sound reinforcement integration, including solution design, on-site commissioning and after-sales support.