Model ：ARF-2400

ARF-2400

*Adaptive filter can be in the "Fast" mode and the " Precise " mode conversions.

*Fast mode is for situations when microphone position is constantly changing, for example, in the conference systems with switching used microphones.

*Precise mode applies to occasions where microphone position is fixed, like the pulpit with a stable acoustic environment.

*The adaptive filter can converge at a slower rate, and thus more effectively suppressing reflection.

* An additional gain of up to 12dB before the feedback occurs (depending on the acoustic environment and the selected operating mode).

Feedback Suppressor also has built-in automatic mixer for two way microphones. In many cases, such as lectern, pulpit, or conference table, using two microphones can better capture moving speakers’ sound, and this usually increases the interference of feedback. As for this problem, the built-in automatic mixer will automatically reduce the gain of the microphone with weaker signal, while improving the gain of another microphone with strong signal. Thus, it can track the moving speakers and produce the best sound clarity. Meanwhile, the total gain remains constant; thereby maintaining the maximum gain. Even disabled feedback suppressor, automatic mixer still works.

ARF-2400 SPECIFICATIONS

AC Power

· Voltage 230/115 VAC, ± 10%, 50/60 Hz

· Input current 1.5 A, 230 VAC / 3 A, 115 VAC

· Maximum power consumption 50 VA

Performance

· Sampling rate (fs) 32 kHz

· Frequency response 125 Hz - 15 kHz

· Distortion<0.1% (1 kHz at)

· Gain (bypass mode) 0 dB line input,

24/36/48 dB Microphone input

· Gain (active mode) 0 dB line input,

24/36/48 dB Microphone input

· SNR> 90 dB

· Signal delay<11 ms

· ADFL control frequency shift up to 5 Hz

· Noise Shield

· Mic / line inputs 1

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

· Maximum Level 18/6 / -6 dBV line input,

-18 / -30 / -42 DBV Mic

· Impedance 10 kilohms / 2 kilohms (line / mic)

CMRR> 25 dB (50 Hz to 20 kHz)

· Phantom Power 16 V (only microphone, switchable)

• Priority control loop, DIN pins 4 and 5

· 1 x microphone input

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

· Maximum Level -18 / -30 / -42 dBV

· Impedance 2 ohms

· Phantom Power 16 V (switchable)

• Priority control loop, DIN pins 4 and 5