F-4000 Intelligent High-Speed Feedback Suppressor
F-4000 Intelligent High-Speed Feedback Suppressor
F-4000 Intelligent High-Speed Feedback Suppressor
  1. F-4000 Intelligent High-Speed Feedback Suppressor
  2. F-4000 Intelligent High-Speed Feedback Suppressor
  3. F-4000 Intelligent High-Speed Feedback Suppressor

F-4000 Intelligent High-Speed Feedback Suppressor

  • Rack-Mountable Design & Hassle-Free Operation

    1U aluminum alloy standard chassis for rack mounting; 2-inch TFT color LCD screen for status display; no debugging required with automatic howling suppression, plus keyboard lock and Chinese-English menu switching for easy and secure use.

  • Powerful AI-DSP Audio Optimization

    Equipped with high-performance DSP chip; integrates adaptive howling suppression, spatial dereverberation, and intelligent noise reduction algorithms; AI voice processing enhances speech clarity, preserves intonation coherence, and boosts gain by 8–15 dB.

  • Rich & Versatile Audio Connectivity

    4 groups of balanced audio I/O with independent 48V phantom power and 6.3mm combined interfaces; supports Bluetooth, USB, and isolated PC input; multiple RCA interfaces (line/music/recording) with independent volume control for flexible audio mixing and recording.

Category:

Functional Features

1.  Standard chassis design with a 1U aluminum alloy panel, suitable for rack mounting.

2.  High-performance DSP digital signal processor, equipped with a 2-inch TFT color LCD screen for displaying status and operation functions; easy to use with high precision and reliability, requiring no debugging and automatically suppressing howling points once connected to the system.

3.  Adaptive environmental howling suppression algorithm with spatial dereverberation function. It prevents reverberation amplification during sound reinforcement in reverberant environments, and also has the ability to suppress and eliminate reverberation.

4.  Environmental noise reduction algorithm with intelligent voice processing. It reduces non-human noise during voice amplification, improves speech clarity, and achieves intelligent removal of non-vocal signals.

5.  AI intelligent voice processing with the ability to distinguish and enhance loud signals while preserving soft signals. It maintains the coherence of speech intonation and speech intelligibility, ensures listening comfort, and increases the gain by 8–15 dB.

6.  4 groups of balanced audio input channels with independent 48V phantom power supply; each channel is equipped with a combined 6.3mm interface input. 4 groups of balanced audio output channels, supporting mixed output of 1 channel.

7.  Bluetooth and USB audio input, with isolated PC input.

8.  RCA line input interface with independent volume control (with feedback function enabled); RCA music input interface with independent volume control (with feedback function disabled); RCA line output interface.

9.  Dedicated RCA recording output interface (bypassing the feedback function).

10.  Keyboard lock function to prevent unauthorized operation by non-administrators; the menu supports Chinese-English switching.

 

Technical Specifications

Input Mode: 2-XLR & 2-TRS, balanced or unbalanced

Input Impedance (Balanced): 22 kΩ

MIC Maximum Input Level: 55 mV–140 mV (RMS), with intelligent shutdown

Line Input Level: 0.775 V (RMS)

Output Impedance: 150 Ω (Balanced); 300 Ω (Unbalanced)

Maximum Output Level: 4.5 V (RMS)

Dynamic Range: > 100 dB (A-weighted)

Distortion: ＞ -88 dBu

Frequency Response: ± 1 dB (Throughput Frequency Response: 30 Hz to 20 kHz; Feedback Suppression Frequency Response: 50 Hz to 18 kHz)

Floor Noise: < 1 mV

Power Supply: AC 90–240 V / 50–60 Hz

Power Consumption: < 20 W

Dimensions (W×D×H): 480 mm × 220 mm × 44 mm

Gross Weight: 3.8 KG

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