[quote name='gilmour' post='113312' date='Jan 4 2008, 12:37 AM']Ok, this should be a quickee
I read in the "What I learned in 2008" thread someones commment that the sensitivity of a cab can make a big difference to volume.
I'm looking at 2 cabs ATM one is 103DB sensitive and the other 106DB. WIll this make a really significant difference, or is 3DB to little to really notice?
I remember someone once telling me that each decibel was twice as loud as the previous, ie 100DB is twice as loud as 99DB. But I might have dreamt that, and it may have no bearing when talking about sensitivity.
Thanks[/quote]
IIRC, with an input of one watt a speaker with a sensitivity of 103db/Wm will produce 103db of sound at a distance of one meter. To increase the volume by 3 db, you must [u]double[/u] the power, so 3db is about twice as loud. Therefore, if you put 100watts into a speaker of 106db sensitivity, you make the same noise as putting 200watts into a speaker of 103db sensitivity.
It think that's right
Hamster