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UP4000 – 10
SENSITIVITY
INPUT
GND
PRIORITY
BALANCED IN
MASTER
VOLUME
100V
70V
FEEDBACK LOOP
50V
25V
4Ω
0
UNBALANCED IN
PARALLEL OUT
POWER
AMPLIFIER
AUDIO
OUTPUT
TRANSFORMER
GND
GND
COMMANDS
STANDBY
OVERL.
+18VDC
SIGNAL
OVERLOAD
PEAK
MACKIE INDUSTRIAL
UP4000 SERIES
BLOCK DIAGRAM
(#2.02.01.DF)
INPUT
PRIORITY
MUTE
STANDBY
MUTE
300
HP
7K
LP
HI
100
LO
10K
STD-BY
0 dB
20 dB
5. Specifications
UP4000 Series Block Diagram
UP4000 Series Specifications
Power Amplifier Section
Continuous Sine Wave Average Output Power, both channels
driven:
UP4061: 60 watts RMS nominal; 90 watts peak (10ms)
UP4121: 120 watts RMS nominal; 180 watts peak (10ms)
UP4161: 160 watts RMS nominal; 220 watts peak (10ms)
Frequency Response
50Hz to 15kHz (±3 dB)
Distortion
THD: < 1% @ 1kHz nominal power
Signal-To-Noise Ratio
> 80 dB below nominal power
Audio Inputs
Balanced Line Input: One active balanced barrier strip
Unbalanced Line Input: One unbalanced RCA connector with
Sensitivity switch
Input Impedance
Balanced Line Input: 100kΩ
Unbalanced Line Input:
0 dB: 50kΩ
20 dB: 50kΩ
Input Sensitivity
Balanced Line Input: 775mV
Unbalanced Line Input:
0 dB: 775mV
20 dB: 80mV
EQ
HP Filter: 300Hz @ 12 dB/octave
LP Filter: 7kHz @ 12 dB/octave
2-Band Output EQ:
High Shelving: ±12 dB @ 10kHz
Low Shelving: ±12 dB @ 100Hz
Audio Outputs
Low Impedance: 4Ω
Constant Voltage: 25V, 50V, 70V, 100V
Unbalanced Out: One unbalanced RCA connector,
parallel to Unbalanced In
Control Inputs and Outputs
Inputs: Priority switch, dry contact closure
Standby switch, dry contact closure
Outputs: Overload Indicator, 18 VDC @ 300mA