Common name: Fostex M85 RP
Production Status: Discontinued / Vintage
The M85RP is a noise-cancelling dynamic microphone. It is sensitive to sounds arriving on-axis while rejecting the others. The response, measured in front of the microphone is very flat but exhibits severe attenuation and low-frequency rolloff which increases relative to the distance from the front of the microphone. The M85RP is part of the RP Laboratory Series. RP stands for Regular Phase. This system actuates the whole surface of the diaphragm with the same phase like a piston. A fine aluminium ribbon-wire coil is etched on to the surface of an extremely thin polyester film diaphragm suspended in a powerful magnetic field provided by rare-earth samarium-cobalt magnets. The diaphragm-coil assembly is 80% lighter than a typical dynamic element resulting in very high sensitivity. The unique suspension system and planar diaphragm exhibit very low distorsion even at high SPL levels. Includes P303 Isomount featuring a quick-disconnect, single button lock and individual measurement chart. The Isomount is finished in no-glare studio grey.