MACKIE U.40d - Manual (Page 23)

23
Owner’s Manual
Owner’
s Manual
Appendix C: Technical Info
Specifications
Frequency Response (20 Hz to 20 kHz) :
Mic input to any output, –20 dBu in, +30 dB gain, +10 dBu out:
+0/–0.5
dB
Line input to any output: +0/–0.5 dB
Phono input to any output: ±0.5 dB of RIAA EQ curve
FireWire Output to FireWire Input: +0/–0.5 dB
Distortion (THD+N):
Main Outputs, 20 Hz to 20 kHz, 1 kHz input signal:
Mic input, –20 dBu in, +30 dB gain, +10 dBu out:
Better than 0.004%
Ch.1 and 2 line input at unity gain, +4 dBu input signal:
Better than 0.005%
Ch.3 and 4 line input at unity gain, +4 dBu input signal (via cross-
fader VCA to main outs):
Better than 0.150%
Phono input at unity gain, –30 dBu input signal
(via crossfader VCA to main outs):
Better than 0.150%
FireWire output to FireWire input: Better than 0.005%
Aux Outputs, 20 Hz to 20 kHz, 1 kHz input signal:
Mic input, –20 dBu in, +30 dB gain, +10 dBu out:
Better than 0.004%
Ch.1 and 2 line input at unity gain, +4 dBu input signal:
Better than 0.005%
Ch.3 and 4 line input at unity gain, +4 dBu input signal (pre-cross-
fader VCA to aux outs):
Better than 0.005%
Phono input at unity gain, –30 dBu input signal (pre-crossfader
VCA):
Better than 0.030%
Phones output, 20 Hz to 20 kHz, +4 dBu input signal
Ch.1 or 2 line input at unity gain: Better than 0.015%
Common Mode Rejection Ratio
Mic input, maximum gain, 1 kHz: Better than 60 dB
Attenuation/Crosstalk (1 kHz, 20 Hz to 20 kHz):
Channel Attenuation –Main level at unity gain, signal placed on any
channel with gain knob at unity and level knob or fader at minimum,
Main outs measured:
Better than –85 dBu
Crosstalk –Main Level at unity gain, signal placed on any channel with
gain knob at unity and level knob at minimum, main outs measured
with any other channel gain knob at unity and level knob at unity:
Better
than –85 dBu
Crossfader attenuation –Main level at unity gain, signal placed on chan-
nel 3 or 4, gain knob at unity, level knob at unity, crossfader moved to
opposite channel:
Better than –90 dBu
Noise Characteristics:
Equivalent Input Noise (EIN), 20 Hz to 20 kHz, max gain:
Mic input, 150 Ω source impedance: Better than –125 dBu
Signal to Noise Ratio, 20 Hz to 20 kHz, ref +4 dBu:
Main Outputs: Main out at unity, all channel gain knobs at minimum:
Better than –90 dBu
Line: Main out at unity, all channel gain knobs at unity (dummy
plugs in Ch.3 and 4 TRS inputs so Phono is disengaged):
Better than –88 dB
Aux Outputs: All channel aux knobs at unity with all channel gain
knobs at unity (dummy plugs in Ch.3 and 4 TRS inputs so Phono is
disengaged):
Better than –90 dB
Phono: Main Out at unity, Ch.1 and 2 at minimum, Ch.3 and 4 Phono
at unity gain (no TRS plugs in Channel 3 or 4):
Better than –74 dB
FireWire: Main Out at unity, all channel gain knobs at minimum,
FireWire input level at unity:
Better than –87 dB
Maximum Input Levels (rated at 1% THD):
Mic Inputs, preamp gain min (+3 dB): +12 dBu
Line Inputs, unity gain: +15 dBu
Phono Input: 77 mV rms @ 1 kHz
Input/Output Characteristics:
Input gain control range:
Ch.1 and 2 input gain knob (XLR): +3 dB to +50 dB
Ch.1 and 2 input gain knob (TRS): –22 dB to +25 dB
Ch.1 and 2 level faders: Off to +10 dB
FireWire Input Level knob: Off to +10 dB
Ch.3 and 4 Input Gain knob: –14 to +14 dB
Ch.3 and 4 Input Level knob: Off to +10 dB
Output gain control range (measured with 100 kΩ):
Main Level knob: Off to +10 dB
Channel Aux knob: Off to +10 dB
Phones Level: Off to +10 dB
Input Impedance:
Mic Input: 1.7 kΩ balanced
Line Input: 50 kΩ balanced
Phono Input: 47.5 kΩ shunted with 200 pF
Maximum Output Levels:
Main Out: +15 dBu
Aux Out: +15 dBu
Phones: 1.5 Vrms into 32Ω (70 mW)
Output Impedance:
Main Out: 120 Ω
Aux Out: 120 Ω
Phones: 50 Ω
Equalization
Channels 1 and 2:
Low: –15 dB to +15 dB @ 80 Hz
Mid Level: –15 dB to +15 dB
Mid Frequency: 100 Hz to 8 kHz
High: –15 dB to +15 dB @ 12 kHz
Channels 3 and 4:
Low: Off to +10 dB @ 300 Hz
Mid: Off to +10 dB @ 1 kHz
High: Off to +10 dB @ 4 kHz
FireWire
Sample rates: 44.1 kHz, 48 kHz,
88.2 kHz, 96 kHz
Resolution: 24-bit
VU Meters
8-segment post Main Level meters: OL (+13), +10, +7, +4, +0,
–4, –10, –20 dBu
Level Set LED (Sensitivity): 0 dBu
AC Power Requirements:
Power Consumption: 8.9 watts
Universal AC Power Supply: 100 VAC – 240 VAC,
50–60 Hz
Physical Dimensions and Weight:
Height: 10.0 in/254 mm
Width:
9.4 in/239 mm
Depth: 3.7 in/94 mm
Weight: 3.0 lb./1.36 kg
(See the lovely dimensions drawing on the previous page.)
LOUD Technologies Inc. is always striving to improve our products by
incorporating new and improved materials, components, and manu-
facturing methods. Therefore, we reserve the right to change these
specifications at any time without notice.
“Mackie,” and the “Running Man” are registered trademarks of LOUD
Technologies Inc. All other brand names mentioned are trademarks
or registered trademarks of their respective holders, and are hereby
acknowledged.