Overview
Georg Neumann (1898–1976) founded his Berlin company in 1928 and produced the CMV 3, the first commercially manufactured condenser microphone — known as the "Neumann bottle" for its shape. The company went on to the U 47, the U 67 and the U 87, microphones that defined recorded sound for decades and are still in professional use.
What You Need
- Lived: 1898–1976, Germany
- Anchor year: 1928 — the CMV 3
- Strand: overlooked — the name is on the box, not in the histories
Steps
The problem as it stood
Wente had shown a condenser microphone could have flat response, but a laboratory instrument is not a product. Broadcasters and recording studios needed microphones that were rugged, consistent between units, serviceable, and available to buy.
What he actually did
Neumann engineered the condenser microphone for manufacture and sale, starting with the CMV 3 in 1928 with interchangeable capsules. He also worked on disc-cutting lathes, another piece of studio infrastructure his company came to dominate.
How it worked
The capsule design — diaphragm tension, backplate geometry, and the arrangement of the polarising voltage — determines the polar pattern and the frequency response. Making those consistent from unit to unit is the manufacturing problem, and solving it is what lets a studio in one city sound comparable to a studio in another.
What it made possible
A professional recording and broadcast infrastructure with predictable, comparable equipment. The later U 47 became so associated with particular vocal sounds that it shaped how records of the period were made, and the multi-pattern capsule gave engineers a control they had not had.
What happened to him
The company survived the war and the division of Berlin and continued to define the studio microphone market. Neumann died in 1976; the name remains a professional standard.
Where the credit landed
Neumann is unusual in this corpus: the name survived because it is on the product. Almost nobody who uses a Neumann microphone knows anything about Georg Neumann, but the attribution is at least intact — which is more than Wente, whose principle he manufactured, can be said to have.
Pro Tips
- Making a laboratory instrument manufacturable and consistent is its own achievement.
- Interchangeable capsules gave engineers control over polar pattern.
- The lineage from the 1928 CMV 3 to the U 87 is unbroken.
Knowledge Base
What You'll Learn
Standardised equipment is what lets studios in different countries produce comparable work.
Why polar pattern is a design decision
A microphone's directional pattern comes from how sound reaches both sides of the diaphragm. Seal the back and it responds to absolute pressure, giving an omnidirectional pattern; open it and it responds to pressure difference, giving a figure-of-eight. Combining the two in proportion yields cardioid and its variants. Switchable-pattern microphones let an engineer choose how much room to record along with the source — the most consequential single control in a recording session.
Where This Fits
This guide covers one specific part of the history of media technology. The wider picture — how each link in the chain from capture through transmission to display was actually built, who built it, and why the credit so often landed somewhere else — is in A History of Broadcast Technology: The Chain From Capture to Screen, which frames the discipline as a whole and links out to the detailed guides underneath it, including this one. If you are starting from scratch rather than solving a specific problem, read that first and come back here.
FAQ
Q: What was the first commercial condenser microphone?
A: The Neumann CMV 3 of 1928, known as the "bottle" for its shape, with interchangeable capsules. It began the studio condenser lineage that runs through the U 47, U 67 and U 87.
Q: Why are Neumann microphones still used?
A: Consistency and a well-understood sound. Once a body of recorded work is made with particular microphones, those characteristics become a reference that engineers continue to want.