Polycom EF2280 Automatic Mic / Matrix Mixer, US $190.00 – Picture 0

Polycom EF2280 Automatic Mic / Matrix Mixer, US $190.00 – Picture 1

Polycom EF2280 Automatic Mic / Matrix Mixer, US $190.00 – Picture 2

Polycom Ef2280 Automatic Mic / Matrix Mixer

US $190.00

Trenton, New Jersey, United States
Jan 30th

Open on mobile:
QR code

The EF2280 is a 12-input, 12-output, 8-channel acoustic echo and noise canceller with matrix mixing and automatic microphone mixing capabilities. It includes a total of 12 analog inputs (8 mic/line level inputs and 4 line level inputs), 12 analog outputs, and 4 digital expansion busses. Acoustic echo cancellation (AEC) and noise cancel- lation can be applied to each of the 8 mic/line level inputs, and each of these inputs can then be sent to one of the two internal automatic microphone mixers. The system also contains a 25 x 18 main matrix, and four 7 x 3 submatrices. The 25 x 18 main matrix has the following inputs: input channels 1-8 (gated or ungated), input channels A-D, the internal signal generator, and 3 mixes of each of the four digital busses (3 mixes times 4 busses equals 12 inputs). The 25 x 18 main matrix has the following outputs: outputs 1-8 and A-D, AEC reference 1 and 2, and W, X, Y, and Z outputs to the digital expansion bus. The EF2280 has 24 bit resolution, 32-bit floating point computation, and a 48 kHz sampling rate. Polycom’s proprietary noise cancellation on each of the 8 mic/line inputs helps to keep overall ambient noise to a minimum. Polycom echo cancellers are the only ones on the market to feature this patent pending technology. Noise cancellation filters out ambient background noise such as noise from heating, ventilating and air condition- ing (HVAC), LCD projectors, and road noise. Our noise cancellation technology is not a noise gate. It actually removes noise. Therefore, it enhances the operation and improves the sound quality of an automixer, for example, by preventing it from bring- ing the noise level up and down when microphones are gated on and off. By cancel- ling the noise picked up by each microphone, the overall signal to noise ratio (SNR) is preserved. The result is crystal clear speech over a greater decibel range than any other echo canceller. That means reduced listener fatigue and a higher quality audio conference. Product • • 5-band equalizer on all Inputs and Outputs (Parametric, High/Low Pass, High/ Front panel LCD for controlling and configuring the product without a computer Low Shelf) • Echo cancellation on Inputs 1-8 • Noise cancellation up to 15 dB • Two internal automatic microphone mixers for Inputs 1-8 • 25 x 18 full cross point matrix mixer with expansion bus • Internal signal generator for calibration mode and noise masking applications • 2 year warranty AEC • • 48 kHz sampling rate, >20 kHz bandwidth • 270 ms AEC tail length • 40 dB/sec convergence rate • Can function in rooms with more than 10 dB of room gain Inputs and Outputs • • 24 VDC Phantom Power 24 bit resolution 8 microphone/line level inputs with phantom power on each input • 4 line level auxiliary inputs with nominal level of 0 dBu • 12 digitally controlled analog trimpots for the 12 input signals • 12 line level outputs with default nominal level of 0 dBu • Automatic Gain Control (AGC) on Inputs 1-8. • Phoenix connectors for audio input and output Remote Control • • Reconfigurable parallel logic input/output • ASPI bus for controlling multiple EF devices from a single controller • EF bus for linking multiple EF2280s. • Digital bus with 4 audio busses, 48 kHz sampling rate • Up to 8 devices can be linked, each device providing 4 audio signals on the bus RS-232 port for remote control

Condition	Used : An item that has been used previously. The item may have some signs of cosmetic wear, but is fully operational and functions as intended. This item may be a floor model or store return that has been used. See the seller’s listing for full details and description of any imperfections.
Seller Notes	“This polycom EF2280 Mic / Matrix Mixer with Echo and noise cancellation is in like new condition.”