Quote Originally Posted by pctower
As for equalizers, I've lost the link, but Dr. Toole had an interesting dicussion about ringing caused by equalizers and the importance of using equalization only when it has been specifically designed for the particular speaker it will be used with.
Howdy

I have been using EQ in my system for over 20 years, and I have never notice any ringing distortion. Also if you look at quality EQ's specification such as S/N ratio, THD/IM distortion or frequency response, it is much lower than component's specifications they are hooked up to.

As far as using EQ in a particular speaker it was designed for, that don't make any sense. EQ are used to compensate shortcomings acoustically (and to lesser extend speaker shortcomings) which can not be solved using classical methods such as speaker placement or room treatments. And since every listening environment is different and different speakers will react differently with its environment , using equalization only when it has been specifically for the particular speakers don't seem to have any meanings