design and speci? cations are subject to change without notice. ask factory for technical speci? cations before purchase and/or use. whenever a doubt about safety arises from this product, please contact us immediately for technical consultation. microphone cartridges omnidirectional back electret condenser microphone cartridge series: wm-61a wm-61 b (pin type) sensitivity specifications sensitivity C35 4db (0db = 1v/pa, 1khz) impedance less than 2.2 k directivity omnidirectional frequency 20C20,000 hz max. operation voltage 10v standard operation voltage 2v current consumption max. 0.5 ma sensitivity reduction within C3 db at 1.5v s/n ratio more than 62 db typical frequency response curve dimensions in mm (not to scale) wm-61a wm-61b 3.4 1.5 ?6.0 1.9 term 1 output term 2 ground 3.4 ?6.0 term 1 output term 2 ground +20 +10 0 C10 C20 C30 20 50 100 200 500 1000 2000 5000 10000 20000 frequency (hz) relative response (db) vs = 2.0v rl = 2.2k C35 4db features small microphones for gener al use back electret type designed for high resistance to vibrations, high signal-to-noise ratio high sensitivity type microphone with pins for flexible pcb (wm-61b type) ? ?
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