vortekx ef2241 polycom

<div>Dimensions</div><div>• 19” (483 mm) W x 9.6” (244 mm) L x 1.75” (45</div><div>mm) H (one rack unit)</div><div>Weight</div><div>• 4 lb. (1.8 kg) dry, 5.5 lb. (2.5 kg) shipping</div><div>Connectors</div><div>• Audio: Mini (3.5mm) quick connect terminal</div><div>blocks</div><div>• RS-232: DB9F</div><div>• EF Bus In/Out: RJ45</div><div>• Control / Status: DB25F</div><div>• Telephone Line / Set: RJ11 (2)</div><div>Power</div><div>• External supply (provided)</div><div>• Input voltage of 110 - 240 VAC; 47-63 Hz; power</div><div>consumption 30 W</div><div>Microphone Input</div><div>• -30 dBu to +0 dBu/-66 dBu to -33 dBu,</div><div>nominal; software selectable</div><div>Phantom power</div><div>• 24 V, software selectable</div><div>Line Inputs</div><div>• -20 dBu to +0 dBu, nominal; software</div><div>adjustable</div><div>Line Outputs</div><div>• -20 dBu to +0 dBu, nominal; software</div><div>adjustable</div><div>Loudspeaker Output</div><div>• 10 W, 4-16 Ohms</div><div>Input Impedance</div><div>• &gt;10 k Ohms</div><div>Output Impedance</div><div>• 50 Ohms (drives 600 Ohms)</div><div>Headroom</div><div>• 20 dB, nominal</div><div>Frequency Response</div><div>• 20 Hz - 22 kHz</div><div>Acoustic Echo Cancellation Span</div><div>• 270 ms</div><div>Total Cancellation</div><div>• &gt; 65 dB</div><div>Convergence Rate</div><div>• 40 dB/second</div><div>Noise cancellation</div><div>• 0 - 15 dB, software selectable</div><div>Line Echo Canceller (telephone hybrid)</div><div>• Echo cancellation 40 dB, total 60 dB;</div><div>• convergence 30 dB/second; cancellation span</div><div>32 ms</div><div>Control Inputs</div><div>• Contact closure</div><div>Status Outputs</div><div>• 5V, 20 mA each</div>