Presonus PRM-1 Precision Reference Microphone

The Presonus PRM-1 Precision Reference Microphone is a special type of microphone that provides an accurate reproduction of a room's sound characteristics for use with audio-analysis tools. It employs a ¼-inch, pre-polarized, electret-condenser capsule with an omnidirectional polar pattern, which allows the microphone to measure reflections, as well as direct signals up to 132 dB SPL. The PRM1 has an all-metal chassis and comes with a clip, foam windscreen, and hard case.

Unlike mics you use for recording and live sound, the PRM1 has a narrow dynamic range, since it is intended to receive test frequencies, such as pink noise, at a fixed level. As a result, it is not recommended for recording or performance but it’s the right mic for analyzing a sound system’s performance. The PRM1 exhibits linear (“flat”) frequency response between 20 Hz and 20 kHz, meaning it captures all frequencies equally within that range. 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.

While the PRM1 can be used for a variety of measurement applications, such as MLSSA, Spectra foo, and TEF, it is especially recommended for use with the Smaart System Check wizards that are integrated into PreSonus UC Surface control software for Studio Live AI and Studio Live RM mixers. With this combination, you can have a complete, powerful, and affordable, audio analysis and correction system.

Product Specification:  

Type: Black electret condenser

Element: Pressure, FET preamplifier

Polar Pattern: Omnidirectional

Connector: 3-pin XLR Male

Frequency Response: 20 Hz to 20 kHz

Sensitivity: -37 dB/Pa (14 mV/Pa) 1 Pa=94 dB SPL

Impedance: 200 Ω

Minimum Load Impedance: 1,000 Ω

EIN: 26 dB

Maximum SPL: 132 dB SPL (THD ≤ 1%, 1 kHz)

Dynamic Range: 106 dB

S/N Ratio: 70 dB

Phantom Power: 9-52 V

Current Consumption: 2 mA

Weight: 5.3 oz (150 g)

Dimensions: 7.56 x 0.83" (192 mm x 21 mm)

Package Weight: 0.91 lb

Box Dimensions (LxWxH): 11.75 x 4.9 x 3"