The omnidirectional, pressure gradient transducer provides excellent transient response and low frequency reproduction. By mounting the surface of the diaphragm flush to a small (40mm) sphere, the capsule acts as a pure omnipressure transducer at the lowest frequencies, delivering a perfectly circular polar pattern. This pattern narrows increasingly through the mid and upper frequency ranges, forming a unique directional characteristic, ideal for natural stereo recording, or indeed, 5.1 and 7.1 multi-channel techniques.
This same operating principle is retained in the M 150, but Neumann's engineers have undertaken ground-breaking work on the use of high grade titanium in capsule design which has resulted in the development of a very thin 12mm diameter diaphragm, producing greatly improved response characteristics. The M 150 employs the same sophisticated power supply and transformerless output circuitry as the award-winning M 149 Tube, improving the reproduction of low level and low frequency signal information, and avoiding the phase problems and low level signal typical of transformer based design. The M 150 Tube is available individually, or in consecutive serial number, stereo pairs. Included with each mic set are wooden mic cases and vintage-design power supplies, all contained in a high-density foam-lined flightcase.
