PreSonus PRM1 Precision Reference Microphone

The PRM1 Precision Reference Microphone from PreSonus 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. Unlike mics designed for recording or performance, the PRM1 has a narrow dynamic range intended to receive test frequencies, making it the perfect mic for analyzing a sound system’s performance. Since it neither boosts nor cuts frequencies, it doesn’t color the sound, making it ideal for measuring what a room or speaker is doing to a sound system’s outgoing signal.

PreSonus PRM1 Features

• Recommended for analyzing your sound system performance
• ¼-inch, pre-polarized electret-condenser capsule
• Linear frequency response between 20 Hz and 20 kHz
• Can handle up to 132 dB SPL
• Omnidirectional polar pattern that allows the mic to measure reflections, as well as direct signals
• Low noise, low distortion
• All-metal chassis
• Comes with a clip, foam windscreen, and hard case
• High-quality components and rugged construction
• Suitable for system analysis and measurement
• Compatible with a variety of measurement tools, including MLSSA™, Spectrafoo™, and TEF™
• Especially recommended for use with PreSonus® StudioLive® mixers and VSL with Smaart® Measurement Technology

• PRM1 Precision Reference Microphone1

• TypeBack-electret condenser
• Element Pressure, FET preamplifier
• Polar Pattern Omnidirectional
• 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
• Connections
  • Polarity: Pin 2 output positive voltage (relative to Pin 3) when diaphragm receives positive pressure (moves inward)
  • Connector: 3-pin XLR Male
• Power
  • Phantom Power: 9-52V
  • Current Consumption: 2 mA
• Physical
  • Dimensions (LxW): 7.56x0.83" (192x21mm)
  • Weight: 5.3 oz (150g)
  • Finish: Metal, matte black
  • Environmental Conditions: 10-50˚ C, humidity 0-95%