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Why are the Etymotic MC5 so inefficient?

post #1 of 2
Thread Starter 

I recently purchased the etymotic MC5 and found them to be surprisingly inefficient.

 

I read the specs of the headphone at 16ohms and 100db.

 

However, when compared to the other IEMs I own, these MC5 requires twice the amount of volume to sound even with my other IEMs which are similar in spec.

 

Am I missing something here?

post #2 of 2

100dB is pretty low.  I can see what you are saying.  The more efficient IEMs are normally in the 112-125 range.

 

Maybe a safety hearing protection thing?  Pretty dumb.  It's just burns more battery time.

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