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Difference between Rated Impedance & Rated Load Impedance?
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Old 25th June 2005
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Gear Nut
 
pardahl's Avatar
 

Difference between Rated Impedance & Rated Load Impedance?
Hi everybody. I've got a question about microphones. Whats the difference between Rated Impedance & Rated Load Impedance? I've got a mic that has Rated Impedance = 50 Ohms and Rated Load Impedance = 1000 Ohms. And I've got a mic pre-amp with selectable impedances. Which one should I take as reference to use correctly the mic & the pre-amp?

Thanx.

Saludos.
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Old 25th June 2005
  #2
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brianroth's Avatar
 

Most "modern" mics need to be loaded into a preamp with an input impedance that is considerably higher than the output impedance of the microphone.

Hence, in the case you mention, set the preamp to a value close to 1000 Ohms.

Bri
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