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???Why The HUGE Discrepancy in Sensitivity Ratings???

I'm shortlisting speakers & have noticed a HUGE difference in the sensitivity ratings provided by manufacturers & what they actually measure.For example the Martin Logan Motion 35XT is specd at 92db.sens.@1 watt & yet actually measured at 87db!At least 4 different pair of speakers on my list are the same,specd at 90db or better @1 watt yet NONE measured better than 87db so what gives?
freediver
timlub
1,649 posts
 

I am very guilty of using the term sensitivity and efficiency interchangeably and really they are, a more efficient speaker will play louder than a less efficient speaker, but in the truest sense...

Loudspeaker efficiency is defined as the sound flux or sound power at output divided by the electrical power input...

Sensitivity is how loud a speaker plays with a given input.   I defer back to 1 watt of power measured 1 meter away anechoic. 

Tim

nonoise's avatar
nonoise
4,382 posts
 
These last posts from timlub, erik_squires and bombaywalla should be carved in stone.

cousinbillyl
161 posts
 
I have a website. I have a frequency response section. I come right out and tell everyone: if your stupid enough to believe these figures, I won't sell you a pair of speakers.
 
We've all been lied to for so long, we actually want to read it, and believe it.

A day will come, when we let our 'EARS' determine how good a speaker is, and not the shite a marketing department exhales. Don't get me started on 'reviewers', and there single minded endeavor (endeavour for us Canadians) to garner more advertising dollars. We're a long way away.

Listen to the speakers. If they don't put the performers in the room with you, cross them off your list. Marketing garbage.

I agree with nonoise.
erik_squires
5,268 posts
 
Well  aww shucks!! No ones ever offered to carve my words in stone before. 

Im flattered.

Erik
timlub
1,649 posts
 

I've been offered to be encased in concrete

Tim

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