Thanks much for all this great advice. Just want to answer a few of the questions:
1) the room is 15 x 20, but the speakers are about 6 feet from the back wall. On one side wall behind one of the speakers there is a 6 foot opening to the rest of the house.
2) I misused the word accurate I guess. I meant that they were able to reproduce the timbres of instruments. I can really hear the difference between oboes, clarinets etc. Massed strings are not just one mess. (I like rock and roll and jazz, but really hearing the nuances of classical music is the ultimate for me.)
3) Re the subs, I have heard that it is best to use a crossover on the sub itself and let full spectrum go to the satellites. Others have said you can help your satelittes by shunting all the low frequency to the sub. I use a second preamp out to go to the sub amp, and there set a low pass at about 50 Hz. The speakers have good output until about 50.
4) I go for about 80 or 85 as loud
Thanks again! Enjoy the music.