FDQ – Frequently Discussed Questions

Information regarding the vintage microphone, Neumann M49, and our Flea49

Recently there have been many discussions and conversations comparing the original vintage Neumann M49 and our Flea49.  For those who are interested, we would like to provide you with information about the two.

The original Neumann M49 was made with different modifications.
The first and main thing that affects the sound of a microphone is the electronic wiring. In the Neumann M49, there are 4 versions.

1. the so called - M49 normal 
2. M49a
3. M49b
4. M49c

The second thing that affected the sound was the capsules.  The Neumann M49 came with one of two types of capsules – the M7 capsule or the K47 capsule. 

The microphone also had one of two different transformers – the BV11 transformer or the BV11a transformer.

Throughout the history of the production of the Neumann M49, they were equipped with one of two types of tubes - the Hiller MSC2 tube (used for the version "M49 normal") or the Telefunken AC701K tube.

For the US market, the Neumann M49 left the production plant with output transformer wiring of 50 Ohm (this was mostly marked by a red dot on the production badge).  Otherwise the standard for the mic was 200 Ohm output transformer wiring. 

With all these different components, we can only imagine all the sound variations of the Neumann M49.

We at FLEA decided to make the M49b version as our standard. This version seems to be the most universal for our purposes. It has a great big bass sound and a pleasant high end.  Of course, it is possible for us to make the Flea49 with "c" wiring (Flea49c) as well. The main difference of a Flea49c is more neutral frequency response than "b" wiring, which means the "c" mic has less low end than "b".

If you are interested in "b" versus "c" wiring, please let us know at time of purchase or contact us with any questions regarding the Flea49.

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