FB-3000

The FB-3000 feedback suppression system has the function of fully automatic detection of ready-made howling points, filtering the sound through a DSP system, effectively suppressing and cancelling calls at high speed, and effectively improving local sound pressure and clarity. The system design is flexible and variable, with 4 universal input interfaces, 2 balanced output interfaces, and a lotus interface for line input and output, making debugging simple and convenient. Each channel has a 48V phantom power supply, and this product is mainly designed for the recording and remote conference calls of modern teaching, meetings, and court hearings.
1.4 universal input interfaces, each with independent 48V power supply 2. It has adjustable high, medium, and low levels. 3. The panel is equipped with level display, which can display the current working status and signal level size 4. One click professional digital feedback suppression module on the panel, with direct/feedback mode conversion and no need for adjustment, increasing the pickup distance of the microphone by more than 30-100CM 5. Quick calibration with one click on the panel, greatly restoring the fidelity of the sound, thereby effectively suppressing more reflective components 6. Standard 1U chassis, high-end brushed aluminum alloy panel. 7.1 Line Input Lotus Interface 8.1 Line output lotus interface 9. The panel has system signal volume adjustment 10. The panel has line input signal volume adjustment 11.2 inch TFT color display screen, monitoring output level at a glance

Technical parameters: Power supply method: AC~220V, 50Hz Power consumption: 30W Frequency response: 20Hz~20KHz Sampling rate: 32KHz THD:<0.1% @ 1KHz Signal to noise ratio:>90dB Signal delay: 11ms CMRR:>25dB (50Hz~20KHz) Input impedance: microphone input: 47K Ω, line input: 10K Ω, Music input: 10K Ω, remote input: 10K Ω Output impedance: Main output: 220 Ω, line output: 1K Ω, Recording output: 1K Ω, remote output: 1K Ω