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Can the voltage drop method used to determine line amp output impedance (finding the resistance needed to halve the output voltage at a certain frequency) be applied to determining a mic's output impedance?
I tried it with a sm57 to start and a 1k tone through a speaker turned up to a point just below discomfort and with the mic against the grill and the voltage readings were very low but the mic works fine.I actually want to measure output impedance of a ribbon mic (Im trying to avoid having to measure the actual ribbon impedance with everything hooked up and risking ribbon damage from the DMM etc otherwise I'd use the transformer turns ratio to estimate the impedance).
punchy fat bastard chip