The adaptive filter can be switched between "fast" mode and "fine" mode. The Quick mode is suitable for applications where the microphone position is constantly changing, for example in a conference system with multiple microphones and switched over. The precise mode is suitable for applications where the microphone position is fixed, for example, where the acoustic environment is relatively stable. The adaptive filter can converge at a slower rate, thereby effectively suppressing more reflection components. Depending on the acoustic environment and the selected operating mode, an additional gain of up to 12 dB can be achieved before acoustic feedback occurs.

The feedback suppressor also inputs the built-in auto-mixer for both microphones. In many cases, such as at a podium, a pulpit, or a conference table, the use of two microphones can better capture the sound of a moving speaker, which often increases the risk of acoustic feedback. In view of this problem, the auto-mixer in the feedback suppressor will automatically reduce the gain of the microphone with the weak signal input and increase the gain of the other microphone with stronger signal input. In this way, it can track the speaker in motion, resulting in the best sound clarity. At the same time, since the total amount of the gain is kept constant, the maximum gain margin, which does not generate acoustic feedback, is maintained. The Auto Mixer function works even if the feedback suppressor is disabled.

AC power supply

● voltage 230/115VAC, ±10%, 50/60HZ

● Inrush Current 1.5A, 230VAC/3A, 115VAC

● The Maximum Power Consumption is 50VA

Performance

● Sampling Rate(fs): 32kHz

● Freq. Response: 125Hz-15kHz

● Distortion: <0.1% (1khz time)

● Gain (bypass mode): 0 DB line input, 24/36/48 dB microphone input

● Gain (action mode): 0 DB line input, 24/36/48 dB microphone input

● SNR: > 90db

● Signal Delay <11ms

● Unscrambler frequency shift, up to 5HZ

● Shield noise

● Microphone/line input 1pcs

● Connector 3-pin XLR, 5-pin DIN, balanced

● Maximum level 18/6-6dBV line input, -18/-30/-42dBV microphone input

● Impedance 10kΩ/2kΩ(line/microphone), CMRR>25db(50Hz to 20kHz)

● Phantom Power 16V (microphone only, switchable)

● Priority control loop, DIN pins 4 and 5

● Microphone Input 1X

● Connector 3-pin XLR, 5-pin DIN, balanced

● The Max Level: -18/-30/-42dbv

● Impedance 2kΩ

● Phantom power 16V (switchable)

● Priority control loop, DIN pins 4 and 5