Are they really 12 ohms?


I bought a pair of speakers that were told to me to average 12 ohms during play. My power amp has binding posts for 8 ohms and for 4 ohms. I first used the 8 ohms post and I was unhappy with the sound. I then used the four ohms posts and the sound improved dramatically. Would this be true if the speakers were truly 12ohms resistance, or am I missing something?
 
rickytickytwo
This is an effect many have encountered. So long as your speaker impedance is greater than the terminals, pick what sounds best.
Would this be true if the speakers were truly 12ohms resistance, or am I missing something?


This would be true regardless. No speakers are truly 4 or 8 or 12 ohm. All speakers have impedance that varies with frequency. So your nominal 12 ohm speakers may well dip down to 4 ohms or rise to 16, but the manufacturer simply decided 12 was representative. Mostly higher impedance means the speaker draws less current. Ohms Law. The 4 and 8 ohm both tap off the same transformer. One has more turns than the other. That's the only difference. 

At least, that's the only difference electrically, physically, and mechanically. Sonically, whole different story. For what is different sonically you have your ears. Which you used. So good on you.
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