Dynamic Microphones: Difference between revisions
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== Glossary of Terms == | |||
'''Sensitivity (mV/Pa or dBV/Pa):''' | |||
Indicates how much voltage a microphone generates for a given sound pressure level (typically 94 dB SPL). | |||
* '''mV/Pa''' – Millivolts per Pascal; a linear measurement used in international specifications. | |||
* '''dBV/Pa''' – Decibels relative to 1 Volt per Pascal; a logarithmic measurement common in American documentation. | |||
Higher sensitivity usually means louder signal output, but it doesn't necessarily translate to better sound or feedback rejection. | |||
'''Polar Pattern:''' | |||
The directional sensitivity of a microphone — how it picks up sound from different angles. | |||
* '''Cardioid''' – Primarily sensitive to sound from the front, with some rejection from the sides and rear. | |||
* '''Supercardioid''' – Tighter front pickup with enhanced rear rejection, ideal for louder stages. | |||
* '''Hypercardioid''' – Even more directional, with strong side rejection and narrower front pickup. | |||
These patterns affect feedback control, mic placement, and how ambient noise is captured. | |||
== Notes == | |||
* Microphones with very low sensitivity (e.g., Audix OM7) require additional preamp gain and may not perform optimally with entry-level PA systems. | |||
* Condenser microphones (like the Neumann KMS 105) require phantom power. If phantom power is unavailable, they will not function. | |||
* Mics with very high sensitivity (above ~3.0 mV/Pa) may be prone to feedback if system gain isn't carefully managed. | |||
* Selecting microphones with sensitivity near 1.85 mV/Pa (e.g., Shure SM58) helps ensure consistent performance across varied setups and avoids surprises for sound operators. | |||