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Professional Audio System – Feedback Suppressor (OBT‑2200, 6‑Channel, Phantom Power)
OBT‑2200 is a digital anti‑howling system device specifically designed for conferences, speeches, teaching, and stage performances.
This **feedback suppressor** can effectively suppress howling, expand volume, ensure high‑fidelity voice transmission, and greatly suppress echoes even in poor environmental conditions. It can also effectively prevent damage to audio equipment and speakers.
OBT‑2200 is equipped with a six‑channel phantom powered microphone balanced input, as well as a system interface, dual‑channel input and output interfaces. As needed, it can be extended and connected in series to form a large‑scale anti‑howling conference system.
This **feedback suppressor** can effectively suppress howling, expand volume, ensure high‑fidelity voice transmission, and greatly suppress echoes even in poor environmental conditions. It can also effectively prevent damage to audio equipment and speakers.
OBT‑2200 is equipped with a six‑channel phantom powered microphone balanced input, as well as a system interface, dual‑channel input and output interfaces. As needed, it can be extended and connected in series to form a large‑scale anti‑howling conference system.
Technical Specifications:
- Output voltage: Output phantom 48V
- Power supply mode: AC 220V~230V, 50/60Hz
- Output current: 6.5mA
- Microphone connection matching: phantom and non‑phantom powered microphones
- Six‑channel phantom powered microphone input
- Six‑channel microphone phantom power supply independent switch selection
- Independent switch selection for six microphone and line input frequency shift effects
- Microphone independent adjustment
- Local speakers in the conference system achieve independent effect connection port (EFX)
- Frequency shift: 5Hz ± 1Hz
- Sound transmission gain increase: 5‑14dB
- Line input impedance ≥ 5kΩ
- Line output impedance ≤ 600Ω
- Frequency response: Non‑shift state: 20Hz‑20kHz; Shift state: 150Hz‑15kHz
- Microphone connection method: 2‑channel female XLR socket
- Weight: 2.60kg
- Dimensions (L×W×H) mm: 1U chassis 420 × 205 × 44
- External input connection: 2‑channel microphone XLR, line RCA mono, effect mono
- Output connection: XLR balanced, line RCA mono, effect mono
- Function: 1 external input frequency shift manual switching, 6 microphone frequency shift manual switching, 6 microphone phantom power supply selection
- Power: 15W
- Switch/Indicator: Ship‑type switch, panel power indicator light, frequency shift switching indicator
- Factory configuration: finished product, audio cable, instruction manual, certificate of conformity, warranty card
- Output voltage: Output phantom 48V
- Power supply mode: AC 220V~230V, 50/60Hz
- Output current: 6.5mA
- Microphone connection matching: phantom and non‑phantom powered microphones
- Six‑channel phantom powered microphone input
- Six‑channel microphone phantom power supply independent switch selection
- Independent switch selection for six microphone and line input frequency shift effects
- Microphone independent adjustment
- Local speakers in the conference system achieve independent effect connection port (EFX)
- Frequency shift: 5Hz ± 1Hz
- Sound transmission gain increase: 5‑14dB
- Line input impedance ≥ 5kΩ
- Line output impedance ≤ 600Ω
- Frequency response: Non‑shift state: 20Hz‑20kHz; Shift state: 150Hz‑15kHz
- Microphone connection method: 2‑channel female XLR socket
- Weight: 2.60kg
- Dimensions (L×W×H) mm: 1U chassis 420 × 205 × 44
- External input connection: 2‑channel microphone XLR, line RCA mono, effect mono
- Output connection: XLR balanced, line RCA mono, effect mono
- Function: 1 external input frequency shift manual switching, 6 microphone frequency shift manual switching, 6 microphone phantom power supply selection
- Power: 15W
- Switch/Indicator: Ship‑type switch, panel power indicator light, frequency shift switching indicator
- Factory configuration: finished product, audio cable, instruction manual, certificate of conformity, warranty card
This **feedback suppressor** provides reliable anti‑howling and frequency shifting for professional audio systems.
In summary, this **feedback suppressor** with 6‑channel phantom power, frequency shift control, and 1U rack‑mount design is the ideal choice for conference rooms, lecture halls, stages, and any application requiring feedback elimination and clear voice reinforcement.
