Harmonai FBX2420 Feedback Suppressor image 1

Harmonai FBX2420 Professional Feedback Suppressor — Fully Automatic Digital Acoustic Feedback Elimination

The Harmonai FBX2420 is a professional-grade, fully automatic feedback suppressor with 12 independent digital notch filters per channel, detecting and eliminating acoustic feedback...

$153.90

Model: FBX2420
Category: Stage Accessories
Images: 4 images
Status: ready

Product Brief

Harmonai FBX2420 Professional Feedback Suppressor — Fully Automatic Digital Acoustic Feedback Elimination

Overview

The Harmonai FBX2420 is a professional-grade, fully automatic feedback suppressor with 12 independent digital notch filters per channel, detecting and eliminating acoustic feedback...

Price: $153.90
Model: FBX2420
Category: Stage Accessories

Specifications

Parameter	Value
Filters	12 independent digital notch filters per channel, auto-controlled across 40Hz–20kHz
Filter Bandwidth	Selectable 1/10-octave or 1/5-octave, constant-Q design, 1Hz resolution
Feedback Suppression Response Time	0.4 seconds (typical at 1kHz)
Filter Configuration	Selectable number of active/fixed filters per channel; configurations are memory-storable
Active Filter Release Time	Selectable: 1 / 5 / 30 / 60 minutes
Maximum Signal Level	Balanced I/O: +27dBV peak; unbalanced I/O: +21dBV peak
Output Drive Capability	Capable of driving >600Ω loads
Input Impedance	>40kΩ (balanced/unbalanced), pin-2 hot
Output Impedance	150Ω (balanced/unbalanced), pin-2 hot
Bypass Function	True power-off bypass
Headroom	Typical balanced input: 4dBV; maximum peak: +23dB
Connector Types	XLR-3 and 1/4″ TRS
Frequency Response	20Hz–20kHz, ±0.3dB
Gain Matching	±0.2dB
Spectral Change	+0.25dB, 20Hz–20kHz
Signal-to-Noise Ratio / Dynamic Range	>100dB
Total Harmonic Distortion	0.005% (at 1kHz)
Harmonic Distortion (20Hz–10kHz)	<0.01%
Harmonic Distortion (10kHz–20kHz)	<0.025%
Dynamic Range	>105dB
Power Supply	220V
Fuse	115V AC 0.1A / 230V AC 0.06A, 0.16A fast-blow
Weight	3.6kg
Dimensions	1U rack-mount, 48.3 × 4.5 × 15.9 cm

Service Support

We support project consultation, model recommendation, bulk purchasing and catalog delivery for retail, multipurpose halls, conference rooms and live events.

Business hours: Monday to Friday 09:00 - 18:30
Inquiry channels: phone / email / website form
Tip: share budget, quantity and use scenario in advance

Front view of the Harmonai FBX2420 professional feedback suppressor

Product Overview

Harmonai FBX2420 is a professional-grade, fully automatic feedback suppressor featuring 12 independent digital notch filters per channel, capable of automatically detecting and eliminating acoustic feedback in under 0.4 seconds. It supports full-bandwidth coverage from 40Hz to 20kHz, employs constant-Q filter design, and achieves 1Hz frequency resolution. With a signal-to-noise ratio exceeding 100dB and total harmonic distortion as low as 0.005%, it delivers clean, feedback-free audio across all professional sound applications. Its standard 1U rack-mount design ensures compact size and easy installation.

Filters

12 independent digital notch filters per channel, auto-controlled across 40Hz–20kHz

Filter Bandwidth

Selectable 1/10-octave or 1/5-octave, constant-Q design, 1Hz resolution

Feedback Suppression Response Time

0.4 seconds (typical at 1kHz)

Filter Configuration

Selectable number of active/fixed filters per channel; configurations are memory-storable

Active Filter Release Time

Selectable: 1 / 5 / 30 / 60 minutes

Maximum Signal Level

Balance I/O: +27dBV peak; unbalanced I/O: +21dBV peak

Output Drive Capability

Capable of driving >600Ω loads

Input Impedance

>40kΩ (balanced/unbalanced), pin-2 hot

Output Impedance

150Ω (balanced/unbalanced), pin-2 hot

Bypass Function

True power-off bypass

Headroom

Typical balanced input: 4dBV; maximum peak: +23dB

Connector Types

XLR-3 and 1/4″ TRS

Frequency Response

20Hz–20kHz, ±0.3dB

Gain Matching

±0.2dB

Spectral Change

+0.25dB, 20Hz–20kHz

Signal-to-Noise Ratio / Dynamic Range

>100dB

Total Harmonic Distortion

0.005% (at 1kHz)

Harmonic Distortion (20Hz–10kHz)

<0.01%

Harmonic Distortion (10kHz–20kHz)

<0.025%

Dynamic Range

>105dB

Power Supply

220V

Fuse

115V AC 0.1A / 230V AC 0.06A, 0.16A fast-blow

Weight

3.6kg

Dimensions

1U rack-mount, 48.3 × 4.5 × 15.9 cm

Operating Temperature

−1.5°C to +50°C

Typical Applications

The FBX2420 feedback suppressor is widely used across professional audio environments: conference rooms & auditoriums—eliminating microphone howl for clear speech; live stages & Livehouses—real-time feedback suppression to safeguard performance integrity; KTV & karaoke rooms—automatic feedback handling for enhanced vocal experience; churches & cathedrals—precise feedback control over large acoustic spaces; broadcast studios—high-SNR output meeting professional recording requirements.

For detailed technical specifications or pricing on the Harmonai FBX2420 feedback suppressor, contact us today for a tailored professional audio solution.