"electronic" question ??

[Blues Daddy]

not sure where to post this . . . but it's a question about a speaker and ohms . . . .

A local ad shows a vintage "8 ohm" speaker (No Finer Speaker Made in all the World) and a reading on a meter at 5.8 ohms. What does 5.8 indicate about this "8.0" speaker? (is this normal or to be expected? or does it show something else?)

[Invalid or Expired Link Removed]

[Invalid or Expired Link Removed]

[Invalid or Expired Link Removed]

 

[bholder]

Resistance and impedance are not the same thing. You're reading straight DC resistance, impedance include capacitance and inductance in addition to resistance.

 

[Crater]

In other words, it's an 8-Ohm driver. It's normal for the DC resistance to be a little less than the actual impedance. A 4 Ohm driver will measure around 3.7 - 3.2 Ohms.

 

[juanaguinaga]

yes impedance is measure in AC mode at 1 khz frequency in other hand resistance is in DC just take the resistance of wire