FBK-4

FBK-4 is an automatic feedback canceller processor designed for live applications. It consists of two channels featuring each 24 static and dynamic filters.

  • 24 programmable filters per channel
  • Dual independent channel processing
  • Live and fixed filter modes
  • Automatic live filter release

 

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FBK-4 is an automatic feedback canceller processor designed for live applications. It consists of two channels featuring each 24 static and dynamic filters. Static or fixed mode automatically selects and adjusts filters to eliminate the feedback effect usually caused by room acoustic defaults. This mode can use up to 24 filters depending on the number of frequencies to be attenuated. Dynamic or live mode continuously detects and eliminates feedback occurring during a performance like a microphone moved too close to speakers. It uses the remaining available filters from the static mode. The correcting filters are released when they are no more necessary and become available for a new correction.
MODEL FBK-4
Sample Rate 48kHz
Dynamic Range 106 dB, A-weighted
THD+N 0.01%, 1kHz
S/N Ratio 106 dB, A-weighted
Frequency Response 20Hz~20kHz,  ±0.5dB
Inter Channel Crosstalk 86 dB, A-weighted
Crosstalk Input to Output 86 dB, A-weighted
Operating Voltage 230 VAC 50/60Hz, 115 VAC 50/60Hz
Power Consumption 15W
Physical
Dimension 483 x 195 x 44mm
Net Weight 3.1kg
A/D Performance
Dynamic Range 114 dB, A-weighted
A/D Conversion 24bit
D/A Performance
Dynamic Range 114 dB, A-weighted
D/A Conversion 24bit
 
Analog Inputs
2 x female XLR and 2 x ¼” TRS Electronically Balanced / Unbalanced
RF filter suppressor
Input Impedance 3.6kΩ
Max Input line level +15dBu
Analog Outputs
2 x male XLR and 2 x ¼” TRS Electronically Balanced / Unbalanced
RF filter suppressor
Output Impedance 120Ω
Max Output level +15dBu