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nominal impedance

   Also found in: Wikipedia 0.03 sec.
nominal impedance [′näm·ə·nəl im′pēd·əns]
(electricity)
Impedance of a circuit under conditions at which it was designed to operate; normally specified at center of operating frequency range.


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If we specify our nominal impedance with a loose tolerance (choosing 90-ohms nominal for a 100-ohms diffpair) manufactured at +/-10%, together they will result in a 90 ohms +/-10% (81 to 99 ohms) range, which is outside of our original specification (100+/-10% = 90 to 110 ohms).
5-inch midrange/upper-bass driver, has an input sensitivity of 92 dB, has a nominal impedance of 6 ohms, and employs a reflex design with the port on the backside.
They feature wide frequency response of 75 Hz to 18 kHz, 16 watts contours pink noise or 32 watts of continuous program capacity, and a nominal impedance of 8 ohms.
 
 
 
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