DSPPA Classroom Voice Amplification
Brand: DSPPA
Simple and beautiful appearance, high-quality engineering plastics, durable and reliable.
Adopt 2.4G frequency matching with a larger range and stronger anti-interference ability.
UHF transmission and DPLL multichannel frequency synthesis.
Digital signal processing (DSP) technology and digital audio power amplifiers for clear sound reinforcement.
Built-in four full-range speaker units, with clear and bright sound, high-quality tone and high sensitivity.
Built-in Bluetooth for wireless transmission, and direct control of the speakers via the remote controller.
The pen transmitter can be used as a conference microphone and can be placed directly into the jacket pocket.
The pen transmitter is powered by a AAA battery. MINI USB charging interface for the rechargeable battery, which can be charged through computer power or mobile phone charger.
| Specification | Parameters | |
| Speaker | Unit driver | 2.75"×4 |
| Rated power (RMS) | 4×10W 4Ω | |
| Frequency range | 650~675MHz | |
| Frequency response | 180Hz~20kHz | |
| SNR (1m,1W) | ≥80dB | |
| MAX. SPL. (1m) | 92dB±2dB | |
| Bluetooth receiving distance | 10m | |
| Dimension (Dia.×H) | 271×88mm | |
| Weight | 0.8kg | |
| Handheld Microphone Transmitter | Working Current | 30mA |
| Working | Sub1GHz | |
| Modulation | GFSK Channel | |
| Bandwidth | 1MHz | |
| RF Power | 10dBm | |
| Full-scale IN | 27mVrms | |
| Full-scale OUT | 867mVrms | |
| Gain Ratio | 13.7:1 | |
| System Delay | 10ms | |
| SNR | 85dB | |
| Harmonic | 0.2%@1KHz | |
| Dimension | 146.5*19*19mm | |
| Weight | 40.7g |
