Presonus - PRM1

Precision Reference Microphone

The PRM1 Precision Reference Microphone is a special type of condenser microphone that provides an accurate reproduction of a room's sound characteristics for use with audio-analysis tools such as real-time analyzers (RTAs) and spectrographs. Since it is a condenser mic, it requires phantom power.

 

The PRM1 employs a ¼” pre-polarized electret-condenser capsule and has an omnidirectional polar pattern, meaning it is equally sensitive in all directions. This allows the microphone to measure reflections, as well as direct signals, providing an accurate depiction of the room.

This mic can handle up to 132 dB SPL and exhibits linear (“flat”) frequency response between 20 Hz and 20 kHz, so it won’t color the sound.

 

The PRM1 has a narrow dynamic range, since it is intended to receive test frequencies, such as pink noise, at a fixed level. Therefore it is not recommended for recording purposes. But it’s the right mic for tuning a sound system to reproduce those tracks accurately in a room.

While the PRM1 can be used for a variety of measurement applications, such as MLSSA™, Spectrafoo™, and TEF™, it is especially recommended for use with PreSonus Virtual StudioLive™ software with Smaart Measurement Technology™ and PreSonus StudioLive 24.4.2 and StudioLive 16.4.2digital mixers. With this combination, you can have a complete, powerful, and affordable, audio-analysis and correction system.

 

VSL’s Smaart System Check Wizards step StudioLive 24.4.2 and 16.4.2 users through the process of viewing the frequency-response trace of a venue, calculating and setting delay-system timing, and verifying output connectivity. To use them, you need to connect a measurement microphone to the StudioLive mixer’s Talkback input.

That’s where the PRM1 comes in. With the PRM1 mic, a StudioLive mixer, and VSL with Smaart, it’s easy to do tasks that once required extensive engineering know-how. For more information about Smaart technology in VSL, click here.

 

The PRM1 has an all-metal chassis and comes with a clip, foam windscreen, and hard case.

Specifications

Features

  • ¼-inch, pre-polarized electret-condenser capsule
  • Linear frequency response between 20 Hz and 20 kHz
  • Omnidirectional polar pattern
  • Low noise, low distortion
  • All-metal chassis
  • Comes with a clip, foam windscreen, and hard case
  • High-quality components and rugged construction


General Specifications

Type Black electret condenser
Element Pressure, FET preamplifier
Polar Pattern Omnidirectional

Connections

Polarity

Pin 2 output positive voltage (relative to Pin 3) when diaphragm receives positive pressure (moves inward)

Connector 3-pin XLR Male

Performance

Frequency Response 20 Hz to 20 kHz
Sensitivity (@ 1 kHz open-circuit voltage) -37 dB/Pa (14 mV/Pa) 1 Pa=94 dB SPL
Rated Impedance 200Ω
Minimum Load Impedance 1,000Ω
EIN (A-weighted) 26 dB
Max. SPL (1 kΩ load) 132 dB SPL (THD ≤ 1%, 1 kHz)
Dynamic Range (1 kΩ load) 106 dB
S/N Ratio 70 dB

Power

Phantom Power 9-52V
Current Consumption 2 mA

Physical

Length 7.56” (192 mm)
Width 0.83” (21 mm)
Weight 5.3 oz (150g)
Finish Metal, matte black
Environmental Conditions 10-50˚ C, humidity 0-95%

NOTE: As a commitment to constant improvement, PreSonus Audio Electronics, Inc., reserves the right to change any specification stated herein at any time, without notification.