Does anyone play two pairs of speakers at the same time?


I have found that certain combinations of speaker pairs produce a better sound than the single pair alone. For example: Klipsch Quartets and PSB Image 4T (new tweeters from Vifa) Quartets inside pair and volume matched to PSBs. I have done this over the years and found some great combinations.
aburnhamuu
...and I post late @ night, so I don't have to cope with the catcalls....;)
Had Elacs B6 running along klipsch p37s side by side, the sound was more "filling" but Soundstage was gone, reflections everywhere, and this was a rectangular high ceiling room, personally didn't like it, I moved to a new house and my room is a "difficult" challenging one, got audiokinesis Azels speakers and swarm which will make for better sound on the difficult rooms as you can adjust glare etc. Although I would like trying running other set of speakers just for fun and tinkering I am almost positive I won't like the sound. Note I am not criticizing experimentation as a matter of fact this is a very interesting topic, thanks to the OP.
I have to admit,when I first read this thread I cringed. Then I started to think about this hobby. Sound is very personal. We all literally hear differently. We all may agree that a train sounds like a train,but that's about where it ends. If stacking speakers,or running 6 pairs next to your chair,or whatever gives you the sound you're looking for,then you have slayed the dragon. (For now at least!) lol!!. 
  
  I know sometimes I get too caught up on what my perception of right and wrong is. However, we are all different. Some of you may hear my system and hurl chunks. It all boils down to enjoying the music,and the gear choices you make.

      Enjoy the ride,
             Ray
Great post rocray, half of my listening is done on headphones because my wife can't take "loud" music, plus she doesn't care for classical music (this spoken 2 years ago after attending over 45 years of concerts at 8 to 12 per year) and HATES Jazz! I'm very happy she has put up with my audio insanity all these years. 
Has anyone heard the new Black Ice Audio F360 Tube Pre-amplifier? Designed by Jim Fosgate, it can create a stereo surround system. It has front and rear stereo outputs, stereo and mono sub woofer outs. Tone controls, a Dimension control and a back level control let you control the soundstage and tailor the system to your room.

I'm guessing you need a second amp for the rear speakers, or powered speakers?

I have an old integrated with two sets of speaker outs. Can play A, B, or A and B. Always thought of it being designed to power two different rooms. I haven't tried two sets of speakers in the same room...yet.