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MP-1 Microphone Preamplifier 

User Guide and Technical Documentation

page 6

Front Panel Controls and Indicators 

 

LIMITER

POWER

160

80

MP-1 MIC PRE

SOUND

       

   DEVICES

FLAT

GAIN (dB)

ON

ON

0

18

28

36

42 46 50

54

58

62

66

 

MIC IN

LINE OUT

PHANTOM

48 V

12 V

OFF

BATTERIES

 

1

2

3

4

5

6

1.  LIMITER/Peak LED

 

Bi-color LED illuminates red at 3 dB below 

clipping; illuminates amber to indicate limiter 

activity.  

2.

 

LIMITER Switch 

 

Activates the peak limiter. Limits to +17 dBu 

output.  

3.  High-Pass Filter Switch 

 

Three-position switch selects inserts an 80 Hz 

or 160 Hz corner frequency filter, 6 dB per 

octave. Center position of switch removes the 

filter from the signal path.

 

4.  Rotary Gain Switch 

 

Selects the amount of gain from input to out-

put, adjustable in 11 increments.

 

5.

 

POWER Switch 

 

Powers the unit when switch is in the up posi-

tion.

6.

 

POWER LED 

 

Bi-color LED illuminates green when the unit 

is powered and changes to red when approxi-

mately four hours of battery life remain.

Back Panel Connectors and Controls 

7

8

9

10

 

LIMITER

POWER

160

80

MP-1 MIC PRE

SOUND

       

   DEVICES

FLAT

GAIN (dB)

ON

ON

0

18

28

36

42 46 50

54

58

62

66

 

MIC IN

LINE OUT

PHANTOM

48 V

12 V

OFF

BATTERIES

 

7.  BATTERY Compartment

 

Requires two AA batteries for operation. Insert 

positive (+) end of battery first.

8.  LINE OUT

 

Transformer balanced XLR line-level output. 

+22 dBu peak output level.

9.

 

PHANTOM Power Switch

 

Three-position switch selects either 48-volt or 

12-volt phantom power. Center position turns 

phantom power off.

10.

 

MIC IN 

Transformer-balanced XLR input accepts 

microphone level signals

Summary of Contents for MP-1

Page 1: ...07 Sound Devices LLC Sound Devices LLC E7556 State Rd 23 33 Reedsburg WI 53959 USA Voice 1 608 524 0625 Fax 1 608 524 0655 www sounddevices com MP 1 Microphone Preamplifier User Guide and Technical Information ...

Page 2: ...transformers RF filtering and all metal construction High current line output driver capable of driving very long cable runs Transformer Balanced Premium quality input transformer provides superior sonic quality and freedom from interfer ence problems Custom designed output transformer provides line driving ability with freedom from interfer ence problems Limiter Extended range peak limiter via du...

Page 3: ...um at 80 Hz 60 dB minimum at 10 Hz Input Transformer balanced 2000 ohm input impedance Output Transformer balanced 130 ohm output impedance Low Cut 80 Hz or 160 Hz switch selectable 6 dB per octave Phantom Power 12 volt or 48 volt switch selectable per DIN 45 596 specification Limiter Limits to 17 dBu output level 10 1 limiting ratio 5 mS attack time 100 mS release time Amber Red LED indicates lim...

Page 4: ...tch Selects the amount of gain from input to out put adjustable in 11 increments 5 POWER Switch Powers the unit when switch is in the up posi tion 6 POWER LED Bi color LED illuminates green when the unit is powered and changes to red when approxi mately four hours of battery life remain Back Panel Connectors and Controls 7 8 9 10 LIMITER POWER 160 80 MP 1 MIC PRE SOUND DEVICES FLAT GAIN dB ON ON 0...

Page 5: ...namic microphones typically do not require phantom power A properly connected balanced dy namic microphone will typically not be affected by the presence of phantom power nor will it draw any current However it is good practice to turn phantom power off if the microphone cable is suspect Poor or incorrectly wired microphone cable can cause audible artifacts in the microphone signal Phan tom is an ...

Page 6: ...RODUCTS THESE TERMS AND CONDITIONS OR THE PARTIES RELATIONSHIP INCLUDING WITHOUT LIMITATION DAMAGES RESULTING FROM OR RELATED TO THE DELETION OR OTHER LOSS OF AUDIO OR VIDEO RECORDINGS OR DATA REDUCED OR DIMINISHED AUDIO OR VIDEO QUALITY OR OTHER SIMILAR AUDIO OR VIDEO DEFECTS ARISING FROM RELATED TO OR OTHERWISE ATTRIBUTABLE TO THE PRODUCTS OR THE END USER S USE OR OPERATION THEREOF REGARDLESS OF...

Page 7: ...dio visual and entertainment lighting control apparatus for professional use Part 2 Immunity EN55022 1995 CISPR 22 1997 Radiated and conducted emissions Class B EN61000 4 2 1995 IEC1000 4 2 1995 ESD 6kV contact 8kV air discharge EN61000 4 3 1995 IEC1000 4 3 1995 Radiated RF Immunity 10 V m 80 1 kHz amplitude modulation EN61000 4 4 1995 IEC1000 4 4 1995 EFT Burst I O lines 25 kV to 1 0 kV EN61000 4...

Page 8: ...ations set forth above they may not apply in all cases For all service including warranty repair please contact Sound Devices for an RMA return mer chandise authorization before sending your unit in for repair Product returned without an RMA number may experience delays in repair When sending a unit for repair please do not include ac cessories including SSD drives CF cards batteries power supplie...

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