Behringer MDX4400 manual Specifications, Audio Input

	MULTICOM PRO MDX4400
7. SPECIFICATIONS
AUDIO INPUT
Connectors	XLR and 1/4" jack
Type	RF filtered, servo-balanced input
Impedance	50 kOhm balanced, 25 kOhm unbalanced
Nominal Operating Level	+4 dBu/-10 dBV switchable
Max. Input Level	+21 dBu balanced and unbalanced
CMRR	typ. 40 dB, >55 dB @ 1 kHz
AUDIO OUTPUT
Connectors	XLR and 1/4" jack
Type	Electronically servo-balanced output stage
	(optional transformer-balanced).
Impedance	60 Ohms balanced, 30 Ohm unbalanced
Max. Output Level	+21 dBu, +20 dBm balanced and unbalanced
SYSTEM SPECIFICATIONS
Bandwidth	20 Hz to 20 kHz, +0/-0.5 dB
Frequency Response	0.35 Hz to 200 kHz, +0/-3 dB
Noise	>-95 dBu, unweighted, 22 Hz to 22 kHz
THD	0.008 % typ. @ +4 dBu, 1 kHz, Gain 1
	0.04 % typ. @ +20 dBu, 1 kHz, Gain 1
IMD	0.01 % typ. SMPTE
Crosstalk	<-100 dB, 22 Hz to 22 kHz
Stereo Coupling	True RMS detection
COMPRESSOR SECTION
Type	IKA (Interactive Knee Adaptation) Compressor
Threshold	variable (-40 dB to +20 dB)
Ratio	variable (1:1 to oo:1)
Threshold characteristics	variable (Interactive or Hard Knee)
Auto characteristics	Wave Adaptive Compressor
Auto Attack Time	typ. 15 ms at 10 dB, 5 ms at 20 dB, 3 ms at 30 dB
Auto Release Time	program dependent, typ. 125 dB/s
Output	variable (-20 to +20 dB)
PEAK LIMITER SECTION
Type	IGC (Interactive Gain Control) Peak Limiter
Threshold	variable (+4 dB to OFF (+22 dBu))
Ratio	oo:1
Stage 1 Limiter Type	Clipper
Attack	“zero”
Release	“zero”
Stage 2 Limiter Type	Program Limiter
Attack	program dependent, typ. < 5 ms
Release	program dependent, typ. 20 dB/s
FUNCTION SWITCHES
INTERACTIVE	Enables the “Interactive Knee Adaptation” characteristics.
CONTOUR	Allows for frequency dependent detection.
I/O METER	Switches between input and output for the Level Meter.
IN/OUT	Bypass switch.
OPERATING LEVEL	Changes the internal reference level from +4 dBu to -10 dBV.
COUPLE	Linking channels 1&2 or 3&4 for stereo operation. Channel 1 (or 3)
	becomes master.

7. SPECIFICATIONS 23