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

 I have attended many live classical musician and jazz concerts. There are many of the same instruments with different manufactures playing together at the same time creating beautiful music. I always thought a speaker for each instrument playing only that instrument in it's exact spot would be an interesting experiment. I have owned many pairs of speakers and amplifiers, I have also played up to 7 pairs of various speakers set to the same volume using a spl meter at the same time. Most combinations don't sound better than the single pairs, just different. However some pairs have sounded decidedly better in the full frequency range and on various music sources.  It's a hobby and a blast messing around. I have also been doing this for 50 years and still enjoying myself. Have fun, but remember live is best and at home it's all about the music. Stretch your ears.

@tomic601 ...

"now a Klipsch and Maggie marriage must sound like a tortured Labradoodle on speed.."

*LOL*  As for the latter...how can you tell the difference between 'that'...and one that isn't?!  They Always seem to be wound up like a tin toy....*L*   They make most breeds act like they're on 'doggie downers'...

Anyway, back 'on topic'....

2 pairs of 'matched' omnis'....small sub for the 'bottom'....active eq.

The only thing I'd fault Linkwitz with is different pairs F & R....

My 'reference speakers' are 3 pairs for H, M, & B; same formula as the omnis'....

I have a pair of small Maggies', and No, I wouldn't subject them to 'competition'.  Dipoles and direct radiators conflict by nature; the K's will drown the Maggies' subtlety....;)

Yes, I have an attitude about 'these things'....just like everyone else around here. *L*

Nothing personal, mind you.... ;)  I just needed to toss my wooden shoes into the gears....

...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