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 Home > Products > Microphones & Accessories > Preamplifiers

Preamplifiers

Larson Davis offers a number of microphone preamplifiers for a variety of applications. Ruggedly built, they can drive lines up to 500 feet with frequency response from as low as 0.3 Hz to as high as 200 kHz.

Model Number

PRM422

PRM426

PRM902

PRM903

PRM905

Diameter

1/4 Inch

1/2 Inch

1/2 Inch

1/2  Inch

1/2 Inch

Connector

10-32

BNC

LEMO 7-pin

LEMO 7-pin

LEMO 7-pin

Polarization Voltage Support

No

No

Yes

Yes

Yes

Supply Voltage

20 V to 32 V

20 V to 32 V

±10 V to ±18 V or 20 V to 150 V

±7 V to ±18 V or 14 V to 35 V

±10 V to ±18 V or 20 V to 150 V

Max Output Voltage (Peak)

8 V

8 V

14 V (4 less than supply voltage)

15 V (3 less than supply voltage)

14 V (4 less than supply voltage)

Max Output Current (Peak)

19 mA (1 less than supply current)

19 mA (1 less than supply current)

20 mA

25 mA

20 mA

Frequency Range

(18 pF)

2 Hz to 126,000 Hz
±0.5 dB

4 Hz to 126,000 Hz ±0.5 dB

3 Hz to 126,000 Hz ±0.5 dB

3 Hz to 126,000 Hz ±0.5 dB

3 Hz to 126,000 Hz ±0.5 dB

Attenuation, typical

0.1 dB

0.08 dB

0.19 dB

0.25 dB

0.19 dB

Noise A-weighted, typical

1.9 µV

5 µV

2.1 µV

2.1 µV

2.1 µV

Noise 20 Hz to 20 kHz, typical

3.4 µV

8 µV

3.7 µV

3.7 µV

3.7 µV

Input Impendance

20 GΩ||0.15 pF

20 GΩ||0.15 pF

10 GΩ||0.36 pF

10 GΩ||0.5 pF

10 GΩ||0.36 pF

Output Slew Rate, typical

2 V/µS

2 V/µS

8 V/µS

10 V/µS

8 V/µS

Power Supply current, typical

2mA to 20 mA

2mA to 20 mA

1.7 mA

7 mA

1.7 mA

TEDS

Yes

Yes

No

No

Yes

Comments

 

 

 

Built-in Heater for Outdoor Use

 

Use with Instrument Model(s)

Instruments with ICP®

Instruments with ICP®

824, 2221, 3000+,

824, 2221, 3000+,

 

Documentation
  PRM 422 Data Sheet
  PRM 426 Data Sheet
  PRM 902 Data Sheet
  PRM 903 Data Sheet
  PRM 905 Data Sheet
  Preamplifier Comparison

(c) 2007 PCB Group, Inc. In the interest of constant product improvement, specifications are subject to change without notice. PCB, IMI with associated logo, ICP, Modally Tuned, Swiveler, Spindler, TORKDISC, Spark, Blaze, and SoundTrack LxT are registered trademarks of PCB Group, Inc. SensorLine is a service mark of PCB Group, Inc. All other trademarks are properties of their respective owners.

 

 

 

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