48-month financing with the Vintage King Credit Card
Shop the Hottest Prices of the Summer New Deals Drop Daily
$ 599 .00
Your Savings: $ 150 .00 Msrp: $ 749 .00
or $25/month for 24 months 0% interest for 24 months. 24 equal monthly payments required. Learn more
Ships directly from Earthworks
Note: This item may not be returnable or could require a restocking fee. Contact one of our Audio Consultants for more details. This item ships directly to you from the manufacturer. To ensure that the manufacturer currently has stock, please chat, call or email for the latest availability status.

SKU

132625

Earthworks M23R Reference Omnidirectional Measurement Mic

23 kHz reference-grade omnidirectional small-diaphragm condenser measurement microphone
MFR# M23R

Product Description

The Earthworks M23R is an omnidirectional (pressure) microphone designed for measurement purposes. It utilizes a pre-polarized condenser capsule directly coupled to a wideband, low output impedance preamplifier. The M23R requires 24-48V phantom power at 10 mA. It features a linear frequency response from 3 Hz to 23 kHz, very low handling noise, uniform polar pattern, and high SPL handling capabilities. Its unique circuitry excludes the transconductance of the input FET from the overall gain structure. This means the sensitivity remains very stable when the microphone is subjected to variations in ambient temperature. The M23R meets or exceeds ANSI Type 1 requirements.

Each Reference Series measurement microphone is manufactured to within ±0.5 dB of each other in frequency response and sensitivity. This ensures that any microphone in the series will be matched to all others now and forever while also eliminating the necessity of ECFs (Electronic Calibration Files) in most cases. The M23R is delivered with its own calibration chart providing its individually measured open-circuit sensitivity and the frequency response curve. Should it be needed, an ECF containing the frequency response data for importing directly into measurement software is available from Earthworks upon request. A mounting clip and calibrator adapter are included with the microphone.

Applications

Earthworks M23R is ideally suited for acoustical measurements, sound system setup and troubleshooting, room acoustics, or any application where an accurate measurement microphone is required. The wide linear minimum-phase response and fast clean impulse response (Fig. 2) make the M23R especially suited for time domain measurements.

The M23R is simple to operate. Connect the microphone to a preamplifier supplying 24-48 V phantom power using a standard XLR microphone cable. Please allow up to one minute for the microphone to settle. Plugging in the microphone “hot” (phantom power already present at the input) will not damage the microphone. For optimum results it is recommended pointing M23R toward the sound source.

This microphone has no removable parts.

Calibration

The microphone’s sensitivity at 1 kHz is measured at the factory. The sensitivity in mV/Pa is provided on the included calibration chart. If on-site calibration is required, use the included one-half inch standard calibrator adapter.

Product Specifications

Condition New
Length 6.3 in
Diameter 0.9 in
Unit Weight 0.35 lb
Tube or Solid State Solid State
Transducer Type Condenser
Polar Pattern Omni-Directional
Number of Microphones Single Microphone
Impedance 600 ohms
Frequency Range 3 Hz - 23 kHz
Sensitivity -29 dBV/Pa (36 mV)
Max. SPL 140 dB
Analog or Digital Analog

Product Reviews

No one has written a review yet. Be the first!

* Required Fields

Share Your Opinion

The best gear advice always comes from those who use it the most. That's where you come in! Let the pro audio world hear your voice with a review of the Earthworks M23R Reference Omnidirectional Measurement Mic . Once you submit your review, please check your email and verify your address to have it posted.

How do you rate this product?
I would like to thank VK for the wonderful sales assistance, service and prices. This was my first purchase with you and it won't be my last. I only wish I'd discovered you years ago!
Matthew R.
I had two Grammy wins this year - Ray LaMontagne & Carolina Chocolate Drops. Both made with help from Vintage King!
Ryan F.
In almost 20 years in Pro audio buying, never did I receive a unit so well packed and exactly as described. Works flawlessly. The whole process has been so smooth. I will never hesitate to do business with you guys in the future and will recommend you to everyone I know.
Martin C.
This was my first experience buying something from Vintage King (although I surf the "used" categories on the website frequently!), and, despite being on the other side of the world, I had absolutely no trouble and everything went very smoothly.
Phil T.
The speed of delivery exceeded my expectations! I was VERY pleased that my shipment arrived in time for a scheduled vocal tracking session. The packing insured that my order arrived safely. And the sales staff responded quickly to questions regarding the product.
James P.
Thank you so much! Vintage King has been so fair and easy to work with. I can't thank you enough. It feels good to trust such a hefty purchase to folks who are so helpful and knowledgeable. Vintage King is a sound designers dream store.
Noa L.
You guys have excellent customer service and I am excited about the next upgrade I complete on my fifth recording facility. I've been in the studio business for forty plus years. The salesman I worked with at Vintage King was the best of the best. You all rock!
Robby T.
I would recommend Vintage King to any one looking for top-class gear, unbeatable customer service and the best prices on the map!
Jake D.
My experience with Vintage King was excellent. The order was here fast considering it was out of stock. The sales person had SKB send it to me directly and I couldn't have been more pleased.
Michael D.
From the minute I placed my order I was kept well-informed through each step in your process. Even though I was buying a comparatively modest piece of gear, your attention to detail made me feel like I was purchasing a six-figure mixing desk.
Thomas W.
I am a new customer of yours. You guys provided me the absolute best deals in ordering all the equipment to power my brand new recording studio. Your customer service is amazing and i will always deal with you from here on out.
Rob M.
Thanks for your great service and getting this out today. You guys really are the Kings!
Alan B.
Better than expected! Truly impeccable service. Your team was professional, knowledgeable, provided speedy delivery above and beyond standard. Vintage King Audio is definitely my go to for all of my audio and information needs.
James O.