I appreciate that! Enjoy!
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It seems there are several approaches to address the system / room interface issues:
1. Using an equalizer such as the Accuphase you mentioned or the Rives. This has the disadvantage of usually having some negative side-effects on the quality of the sound.
2. Chosing a system that works well in the room: speaker size, speaker design, and corresponding compatible amp / sources. This has the disadvantage of being hard to predict, requiring lots of trial and error, and perhaps limits the listener to a system sound that they may not prefer - all else being equal.
3. Treating the room with reflectors and absorbers. This has the disadvantage of being aesthetically unappealing as well as being very difficult to do well.
4. Designing and building (or choosing) a room that works well for music. This has the disadvantage of being expensive and often requiring a dedicated space.
Many people (especially here on Audiogon :-) like iterating through systems using approach #2. Perhaps the most reasonable approach is:
#5. Using all four approaches in moderation: using equalization as required for only the most severe problems; choosing a system that has a decent chance of sounding good in the space; adding a minimal amount of reflecting and absorbing material to optimize the room; and starting off with a room that has a good chance of being a good environment for playing music.
Thanks again. It is really cool that the Wisdoms have SO MUCH flexibility so that they can be tailored both for the room and the owner's personal tastes. Cool.
I am in agreement with your summary, but would like to point out that few rooms exist that do not have problems below 250 hz. The choice is typically to choose a speaker that does not have sufficient bass response to excite any nodes or alternately to equalize. Treatment with absorption and diffusion becomes less practical below 200 hz. I do think that any additional electronics inserted in the chain, such as an equalizer, has the potential to do great harm. In my particular case, I do use some room treatment and am planning to use subwoofers crossed in at 40 hz. As my preamp has two outs the out driving the main speakers will not go through either an equalizer or cross over. I am having Bob Crump custom install four ateflon caps at the input of my amp driving the Campaniles to roll off out put below 100 hz. In my experience, the Teflons used in a passive circuit do the least harm to the signal.
This is merely one possible answer and I will have more to say when the new subs arrive.