twiiii
Lunatic Member
When I attended my first Sys-aud-com session with Don and Caolyn Davis of Altec fame in 76 on the design and implementation of sound systems for large spaces we had a class about room equalizers. At the time everyone preferred White passive and active room equalizers and Urei 1/3 octave , equalizers. The white passive units wouldn't work in the home and two Urei 539's were very expensive. Part of our class was about Warenbacks PZM mics that were bought from him by Crown. And at the time Crown was making the best Commercial amps. Mcintosh amps were considered high quality consumer amps with handles. They cost too much and were too heavy. Anyway back to EQ's. Don made an off handed remark about home EQ's being toy's accept for one. The Crown EQ 2. . It had fantastic signal to noise very low distortion and the filters added, Which is important other wise the EQ and speakers could cause of timing errors between the two create some very sever comb filter irregularities. In addition to the variable frequencies of the filters, the unit had tunable tone controls. This allowed you to get the general shape of the response correct and then use the parametric tunable filters to take care of the smaller irregularities. But as always it was recommended you never use boost with the parametric or others 1/3 octave filters. It adds noise and distortion when you use any filter in the boost side of the equation. I got my first EQ-2 in 76 new and its only been in the shop once in 43 years. Its very quiet and sounds, well it doesn't sound. You really don't know its there . It does its job. I bought a second one for use with the center channel when I upgraded to a 6.0 system at first in 2008. When I went 7.0 I added Audio control eq's for the rear and side. I prefer Urei 539's and some of the mini DSP's. They are much more accurate, but there is something about the sound of the DSP's I haven't liked. and the Crowns do their Job so well I don't see the need to change. I pull out the spectrum analyzer every 6 months or so just to confirm everything is A OK. But other wise the Crowns are never touched. I use a Graphic SAE 11 band EQ for detailed analog source adjust ments, and sometimes I turn off the CROWNS and use Room Perfect in my MX 151 HT processor. My idea as to what is perfect is a little different than Lyngdorfs. Anyone catch the mistake. The picture shows an MX-119. View attachment 1361898View attachment 1361899View attachment 1361900
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