MCN AUDIO
U1127
STEREO
MICROPHONE
PREAMPLIFIER
USER’S MANUAL
OPTIONS
Standard
Oscillator 1000 Hz
Oscillator -12 dB
Option 01
Oscillator 800 Hz
Option 02
Oscillator 0 dB
ACCESSORIES
U8111
External Power Block 12 V / 1 A
SERIAL NUMBER
Страница 1: ...REO MICROPHONE PREAMPLIFIER USER S MANUAL OPTIONS Standard Oscillator 1000 Hz Standard Oscillator 12 dB Option 01 Oscillator 800 Hz Option 02 Oscillator 0 dB ACCESSORIES U8111 External Power Block 12...
Страница 2: ...FICATIONS 4 SCHEMATIC 5 FRONT PANEL 6 REAR PANEL 7 INPUT AND OUTPUT LEVELS 8 GAIN 8 OSCILLATOR 8 BANDWIDTH 9 PHANTOM POWER 10 BATTERIES 11 BATTERY LIFE 12 POWER ADAPTER 13 INDEX 14 Due to permanent te...
Страница 3: ...a 12 V or 48 V phantom power can be supplied The low impedance of the floating balanced outputs allows the use of long cables without signal loss This unit is the ideal complement of a DAT recorder or...
Страница 4: ...PLIFIER WARRANTY This equipment is warranted against defects in material and workmanship for a period of five 5 years from date of delivery The warranty will be voided if the unit is tampered with or...
Страница 5: ...B Low cut filter selectable 20 Hz 80 Hz 140 Hz first order Phase roll off 1 from 20 Hz to 20 kHz no filter selected Common mode rejection 60 dB at 20 kHz gain 10 dB 88 dB at 20 kHz gain 30 dB Input no...
Страница 6: ...T STAGE OSCILLATOR PREAMPLIFIER 12V 48V MICROPHONE POWER ON OFF OVERLOAD DETECTION A B DC DC CONVERTEUR EXTERNAL POWER BATTERIES ON OFF FILTER 20Hz 80Hz 140Hz MCN AUDIO U1127 MICROPHONE PREAMPLIFIER S...
Страница 7: ...30 Hz filter is active On the OSC position the signal of the oscillator is present at the output of the preamplifier at the reference level The input signal is disconnected from the outputs The Microp...
Страница 8: ...Ground 3 pin male XLR connector 2 Hot Pin 1 is connected to the metallic frame 3 Cold OUT B Channel B output 1 Ground 3 pin male XLR connector 2 Hot Pin 1 is connected to the metallic frame 3 Cold EXT...
Страница 9: ...he headroom before clipping is 11 dB GAIN The nominal output level of the preamplifier is 4 dBm The real gain value is the value shown on the gain selector plus 4 dB Switch Position Actual Gain 10 dB...
Страница 10: ...efore overload of the preamplifier But they are no use to detect overload of equipment connected after the preamplifier Thus is may be necessary to use a low cut filter or to use pressure gradient mic...
Страница 11: ...bly be necessary to switch off the phantom power to prevent damage at the output stage of this equipment The phantom power switches are located inside the battery compartment To change the switches se...
Страница 12: ...remove the batteries use the ribbon to extract the first ones Replace the 8 batteries at the same time Do not use Nickel Cadmium or Lithium batteries if their nominal voltage is different to 1 5 V Ob...
Страница 13: ...ash on the front panel of the preamplifier When this led starts flashing there are 15 minutes of power left Using the preamplifier in very cold conditions reduces battery life Using Zinc Carbone batte...
Страница 14: ...disconnecting the power adapter may be done even with the preamplifier running This does not lead to any audible noise at the preamplifier output The U8111 power adapter delivers a constant filtered a...
Страница 15: ...I IN A 6 IN B 6 INPUT AND OUTPUT LEVELS 8 Input protection system 8 L LEMO 13 Lithium battery 11 Low cut filter 9 M Maximum input level 8 Maximum output level 8 N Nickel Cadmium battery 11 Nominal out...
Страница 16: ...15 MCN AUDIO U1127 MICROPHONE PREAMPLIFIER MCN AUDIO On line www mcn audio com Document Code UM EV U1127A V4...
