The Earthworks M23R is a 23kHz omnidirectional measurement microphone with a frequency response of 3Hz to 23kHz ±0.5dB, designed for critical acoustic measurement applications.
Each M23R maintains identical frequency response and sensitivity within ±0.5dB, ensuring true uniformity across every unit produced. This allows engineers to expand microphone arrays over time without introducing variations, guaranteeing reliable results whether using one microphone today or an array years later.
The uniform design means users can build arrays of reference microphones at any pace. Additional microphones integrate seamlessly, matching with the same exacting tolerance, which makes the system scalable for evolving projects or teams.
Because every M23R maintains the same response, results remain consistent across locations and over time. Multi-microphone measurements and distributed teams achieve the same accuracy without calibration issues.
The microphone captures the fine detail of initial transients with extreme accuracy. These fast transient responses define timbre, texture, and perceived “air”, elements essential for loudspeaker design, room analysis, and high-resolution system setup. Earthworks’ technology ensures audio measurements that translate directly to natural sound reproduction.
The M23R offers an omnidirectional polar pattern, 36mV/Pa sensitivity, and requires 24-48V phantom power at 10mA. It handles a maximum acoustic input of 140dB SPL, with an output via balanced XLR and a 65Ω output impedance, driving a minimum 600Ω load. Self-noise is equivalent to 20dB SPL (A-weighted). The unit operates in temperatures from -20°C to +60°C and withstands storage from -40°C to +80°C, with up to 90% humidity. Dimensions measure 165mm in length and 22mm in diameter, weighing 160g.
Large/Heavy items: Extra charges may apply (e.g., consoles, large monitors). We’ll contact you before processing if so.
We ship with DPD and UPS across the UK, EU and worldwide. Same-day within the M25 is available depending on stock.
This item, like everything we supply, comes with the complete support of our expert team. Our excellent technicians have been specifying, building and supporting studios for over twenty years. If you have any problems with installation, setup or everyday use, they’re never more than a click away, and always happy to help.
You can contact them here.
The Earthworks M23R ensures that every microphone produced offers identical frequency response and sensitivity within ±0.5dB. This consistency allows users to expand their microphone arrays anytime without compromising accuracy, ideal for scalable audio projects.
Designed to integrate seamlessly into existing arrays, the M23R microphone allows for flexible expansion pace, maintaining uniformity across units. This feature is perfect for teams and projects that evolve over time, ensuring consistent quality and integration.
Capable of capturing subtle audio nuances and transients with extreme precision, the M23R is essential for applications such as loudspeaker design and room sound analysis. This high fidelity capture translates into natural sound reproduction, crucial for professional audio setups.
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