MR-30B
Wireless Classroom Audio Upgrade System
MR-30B Wireless Classroom Audio Upgrade System- Elevating Classroom Interaction with Seamless Dual-Audio Performance.
■ Easily Upgrade Existing Classroom Audio Systems
■ Flexible Teaching Across Multiple Classrooms
■ Stable and Clear Audio for Seamless Instruction
■ All-Day Battery Performance for Continuous Teaching
■ Easily Upgrade Existing Classroom Audio Systems
■ Flexible Teaching Across Multiple Classrooms
■ Stable and Clear Audio for Seamless Instruction
■ All-Day Battery Performance for Continuous Teaching
Features
MR-30B Wireless Classroom Audio Upgrade System.
Two-Channel Wireless Microphone Receiver- elevating Classroom Interaction with Seamless Dual-Audio Performance.
The MR-30B is a professional-grade, high-performance wireless microphone receiver specifically engineered for modern school audio systems. Designed to streamline interactive learning, a single MR-30B receiver effortlessly connects up to two wireless microphones simultaneously, bridging the communication gap between teachers and students.
Specification
| Speaker spec. | |
| Amplifier | Class D |
| Wattage Output | 30W Stereo |
| Speaker spec. | 2.75" 15W/8Ω x2 |
| SPL(Sound Presure Level) | 92sB/W |
| Frequency Response | 50Hz ~20kHz |
| Dimension | 254.1 x 250 x 90mm |
| Weight | 1.5Kg |
| Power Supply | Switching Power Supply DC19V/2.64A |
| Input | Audio in x2, DC in x1, USB-A x2 |
| Output | Audio in x1 |
| Wireless Spec. | |
| Frequency Response | 2.4G ~ 2.483G |
| Device Pairing | Automatic Secured ID Locking |
| RF Technology | GFSK |
| Transmitter (MIC) | |
| Voltage Range | 3.7V ~ 4.2V |
| Current | 67mA |
| Transmitter Power | 10mW |
| Antenna Gain | 2.96dBi |
| E.I.R.P(Transmitter Power+Antenna Gain) | 12.9dBm(20mW) |
| Input Resistance | 10kΩ |
| Input Voltage | 2.8Vp-p(MAX) |
| Charging Port | USB Type C |
| Audio in | Built-in high sensitivity condenser capsule x 1, 3.5mm jack x 1 |
| Audio Latency | < 10ms |
| Signal to Noise Ratio@ 1KHz | 81dB |
| Dynamic Rangr@ 1 KHz | 90dB |
| Distortion THD | 0.1% |
| Pairing Time | 3 sec |
| Pairing Distance | |
| Radio Distance | 30M (Free space) |
| Battery Type | Lithium battery |
| Battery Time- Operating Time | <10 hours/cycle |
| Battery Time- Charging Time | 2 hours (0%~100%) |
| Dimension(L*W*H) | 120 x 35 x 12mm |
| Weight | 40g |
| Receiver (Dongle) | |
| Voltage Range | 3V~5V |
| Current | 24mA |
| Sensitivity | -85dBm(Min) |
| Output Resistance | 32Ω |
| Output Voltage | 2Vp-p(Max) |
| Dimension(L*W*H) | 70 x 25 x 12mm |
| Weight | 14g |
| Other Spec. | |
| Safety | BSMI, NCC, CE, FCC |
| Accessories-Speaker | Power cord x1, Power adapter x1, 3.5mm audio cable x1, Sponges, QSG |
| Accessories-MIC | USB Type C cable x1, Sling |
*specifications subject to change without notice.
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