burdij
Well-known member
I am looking for the Altec datasheet for a 201A microphone. A schematic would be good too. This mike may also be called an M53.
Altec 201A SDC microphone
- Thread starter burdij
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burdij
Well-known member
Here is what I have so far:
1. Some people have claimed that this microphone was made for Altec by AKG and that it is similar to the C 451 EB. I don't thing this is true. I compared the PC board with a drawing of the PCB for the 451. They are similar and have similar circuitry but they are not the same. The biggest difference is that the Altec mike has a 5 step gain control that switches in or removes capacitors bridging the capsule the change the gain in 10db steps from -40 to -70. The board is also clearly marked ALTEC.
2. The microphone first appears in the 1975 Altec pro line catalog and was marked M53.
3. The capsule is not a 29A or B but is marked M42A. The construction is similar but the two are not interchangable due to the way in which the contact to the back electrode is make. It is a flat disk in the 29A and a short pin in the 42A.
4. The 1978 Altec Pro line catalog shows the microphone listed as a model C70C. The sensitivity is listed as -60db ref. 10 dynes/cm(2).
1. Some people have claimed that this microphone was made for Altec by AKG and that it is similar to the C 451 EB. I don't thing this is true. I compared the PC board with a drawing of the PCB for the 451. They are similar and have similar circuitry but they are not the same. The biggest difference is that the Altec mike has a 5 step gain control that switches in or removes capacitors bridging the capsule the change the gain in 10db steps from -40 to -70. The board is also clearly marked ALTEC.
2. The microphone first appears in the 1975 Altec pro line catalog and was marked M53.
3. The capsule is not a 29A or B but is marked M42A. The construction is similar but the two are not interchangable due to the way in which the contact to the back electrode is make. It is a flat disk in the 29A and a short pin in the 42A.
4. The 1978 Altec Pro line catalog shows the microphone listed as a model C70C. The sensitivity is listed as -60db ref. 10 dynes/cm(2).
dale116dot7
Well-known member
Nele
Well-known member
Dale!
Good to see you're back!
Just recorded an album with an iaudio mk7 with your capsule. Very nice!! Thanks!
Good to see you're back!
Just recorded an album with an iaudio mk7 with your capsule. Very nice!! Thanks!
