Bộ chống phản hồi âm DR-211

Bộ chống phản hồi âm DR-211

Technical Specifications Table
Analog input 2CH-XLR and 1/4 “TRS (female) input, electronic balance/imbalance
Input impedance balanced at 47 Ω, unbalanced at 20K Ω
Maximum line level input+18dB μ
Analog output 2CH-XLR and 1/4 “TRS (female) output, electronic balance/imbalance
Output impedance balance>120 Ω, imbalance>60 Ω
Maximum output level+20dB μ
Frequency response 20Hz-20KHz, ± 0.3dB
Signal to noise ratio>105dB (A)
Dynamic range 103dB
Total harmonic distortion+noise 0.005%, 1KHz; 20Hz-10KHz，<0.01％； 10KHz-20KHz，<0.025％
Working voltage 110V/220V/AC 50Hz/60Hz
Gross weight 2.7 kilograms
Packaging size 560 × 260 × 90mm
Machine length 480 * height 45 * depth 190 (mm)
Features:
The perfect solution for anti whistling in conference systems;
2-inch TFT color screen, available in both Chinese and English;
Feedback and frequency shift design scheme, with 4 selectable frequency shifts;
Each channel is equipped with 8 notch filters with a working frequency of 20-20KHz, which automatically scan and suppress howling points;
The unique noise gate function can suppress weak noise interference in the system;
Input compression function, eliminating feedback while also expanding vocal dynamics;
Fast, medium, and slow response times can be set at 3 speeds, making it more user-friendly;
Equipped with professional PC debugging software, USB driver free plug and play, convenient and fast.
Applicable places: conference rooms, multifunctional halls, multimedia classrooms, small and medium-sized banquet halls.