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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've been offered to be encased in concrete

Tim

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bombaywalla
1,957 posts
 
thanks for the kind words nonoise :-)
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nonoise
4,382 posts
 
Hey, you guys earned it.
I need to bookmark this thread.
smittyjs
33 posts
 
Yep, well known that several manufacturers bump up their ratings from what they really are. The other trick is to leave off the +/-db in the frequency response. However, there are many that tell the truth (ex. Revel, Paradigm, PSB). You just have to learn which ones or have enough experience in speaker design to know what's achievable.
freediver OP
585 posts
 
What bugs the crap out of me is that amplifier manufacturers used to do the same thing with power ratings.I don't know how this was changed but IMO it's high time the same pressure was brought to bear on speaker mans.to provide honest & accurate specs!
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