Polycom Vortex EF2280 8-Channel Telecom Conference Sys Mixer

The Polycom Vortex EF2280 is a professional-grade, 8-channel acoustic echo canceller and matrix mixer designed for large-room voice conferencing and sound reinforcement. It is a legacy rackmount component often used in boardrooms, courtrooms, and distance learning centers. Channels: 8 balanced Mic/Line inputs and 12 outputs (8 line, 4 power amp/line). Echo Cancellation: Features industry-standard Acoustic Echo Cancellation (AEC) on all 8 inputs to prevent feedback and "double-talk" echo. Matrix Mixer: A matrix allows any input to be routed to any output with independent level control. Noise Cancellation: Includes per-channel digital noise reduction to filter out ambient sounds like HVAC or projector fans. EF Bus: Allows linking up to 8 Vortex units (EF2280, EF2241, etc.) for up to 64 microhpone inputs. RS-232: For integration with control systems like AMX, Crestron, or Polycom's own Vortex software. Automatic Mixing: Uses Polycom’s "Neural Network" algorithm to manage multiple active microphones simultaneously without cutting off speakers. Logic I/O: 5 control inputs and 10 status outputs for external triggers (like "Mic Mute" buttons or camera tracking). Frequency Response: 20 Hz to 22 kHz, providing full-bandwidth audio for high-fidelity conferencing.