Extron Electronics MPX Plus 866 A Rev. B - Manual (Page 212)

Reference Information, cont’d
MPX Plus 866 A Media Presentation Matrix Switcher • Reference Information C-4
PRELIMINAR
Y
Audio
Routing ........................................... 14 x 6 stereo switching matrix
4 x 6 microphone mixing matrix
Gain ................................................. Unbalanced output: -6 dB; balanced output: 0 dB
Frequency response ...................... 20 Hz to 20 kHz, ±0.15 dB
THD + Noise .................................. 0.01% @ 1 kHz at nominal level
S/N .................................................. >105 dB, balanced, at maximum output (21 dBu) (unweighted)
Crosstalk ......................................... <-90 dB @ 1 kHz, fully loaded
Stereo channel separation ............ >96 dB @ 1 kHz
CMRR .............................................. >70 dB @ 1 kHz
Volume range ................................. -100 dB to 0 dB (volume numbers 0 to 64 in 1.0 dB steps, except from step 0
to 1, which is a 37 dB step)
N Full attenuation is volume level 0, -100 dB. The default is -0 dB, volume level 64.
Audio input
Number/signal type ..................... 14 stereo or mono, balanced/unbalanced
Connectors ..................................... (14) 3.5 mm captive screw connectors, 5 pole
Impedance ...................................... >11.5k ohms unbalanced, 22k ohms balanced, DC coupled
Nominal level ................................ +4 dBu (1.23 Vrms)
Maximum level .............................. +24 dBu at 1% THD+N
Input gain adjustment .................. –18 dB to +24 dB, adjustable per input by RS-232, Ethernet, or front panel
N 0 dBu = 0.775 Vrms, 0 dBV = 1 Vrms, 0 dBV ≈ 2 dBu
Mic/line input
Number/signal type ..................... 4 balanced/unbalanced
Connectors ..................................... (4) 3.5 mm captive screw connectors, 3 pole
Impedance ...................................... >2.5k ohms unbalanced, >5.0k ohms balanced
Nominal level ................................ -60 dBV (1 mVrms) when Mic gain is set to +40 dB
Equivalent input noise ................. <-120 dBV (1.0 µVrms) when Mic gain is set to +40 dB
Maximum level .............................. +12 dBV (2 Vrms) at 1% THD+N when Mic gain is set to 0 dB
Input gain adjustment .................. 0 dB to +80 dB, adjustable per input
Mic DC power ............................... +48 VDC (can be switched on or off)
Audio output
Number/signal type ..................... 6 stereo or mono, balanced/unbalanced
Connectors ..................................... (6) 3.5 mm captive screw connectors, 5 pole
Impedance ...................................... 50 ohms unbalanced, 100 ohms balanced
Gain error ....................................... ±0.10 dB channel to channel
Maximum level (Hi-Z) ................. >+21 dBu, balanced; or +15 dBu, unbalanced at 1% THD+N