Multi-Pattern Tube Condenser Microphone
The M 49 was a multipattern large-diaphragm tube microphone with an important new innovation: the mic’s pickup pattern could be adjusted remotely, by a dial on the power supply.
Another new innovation was that the mic maintained nearly equal sensitivity and output level across patterns — unlike the U-47, for example, which was 5dB hotter in Cardioid than Omni.
Maintaining output level required a change in the polarization voltage circuitry. Whereas the U-47’s circuit would disconnect the capsule’s rear diaphragm in Cardioid mode, in the M 49 both diaphragms were always polarized — the front at a constant 60Vdc, and the rear from 0Vdc to 120Vdc. When set to Cardioid, the rear diaphragm polarization voltage was 0Vdc.
Hello. I was lucky the other day to pick up a Neumann m49c for under $4k. Was very happy, good score. I was just curious. What are the difference between the M49 and the M149? I know they're quite different, not that I've had both next to each other. I just wanted to know mechanically...
...is owned by a high-tech, left brain giant worth billions, whose general direction is anything but "revisiting the past", the M49v is nothing short of anachronistic, and in a good way anachronistic: aural pleasure was the point here, and the new management at Neumann is really starting to understand that it must serve aural...
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