Has Anyone Ever Run TWO Identical Pairs of Speakers ?

I’m considering buying an extra pair of tower speakers identical to the ones I currently own. I would wire them as 4 ohm speakers powered by about 250wpc,

Each set of two speakers would be placed next to each other so there would be 2 identical left channel speakers and 2 identical right channel speakers, with each pair separated by about 1/2.” 
My listening chair chair can be as close as 8’ from the “center” of the speakers to as far back as 20’ from the “center” of the speakers.

And the actual distance between these two seperate pairs of speakers could range from 6’ from each pair to as much as 18’ for each pair. I would of course spend a great deal of time ‘dialing” them in for the best sound.

Has anyone ever tried this, and what were your results?

I’d appreciate your collective informed thoughts.

@onhwy61 wrote: "If you must go this route I suggest you try placing the loudspeakers front to back. One loudspeaker pointed towards the listening area and the other pointing in the opposite direction. Something of a bipole radiation pattern."


You could also place them side-by-side but with one facing forwards and the other facing backwards. This should theoretically improve how the wrap-around wavelengths combine, relative to a back-to-back configuration.

Note that a bipolar configuration will theoretically result in a roughly 3 dB boost in the bass region relative to elsewhere in the spectrum. This is because the woofers will be close enough to add in-phase at long wavelengths, while at shorter wavelengths the rear drivers’ contribution adds in semi-random phase. If the net effect is indeed too much low end, you might try plugging some or all of the ports.

bipolar loudspeaker designer
I have done so, and it's a waste. It's how you move away from SOTA. You'll get a TON of mediocrity - if that's what you're after. 

Save your money and get a better single pair of speakers, if you want quality sound. 
I run two pairs of 3 way sealed enclosure speakers from the late 80's.  The brand name is "Kirksaeter".  The sensitivity is rated at 93db .   The two pairs are stacked on top of each other.  I use an old speaker stand that angles the speakers up at a slight angle.  The two pairs are running two PS Audio Sprout100s.  I bought both pairs used.  When I listen to FM radio, which isn't high fidelity, I listen to both speakers.  I keep the volume low, but yet both pairs fills the downstairs of my home with comfortable level of music.   This is not critical audiophile listening but rather back ground music for everyone to enjoy.   In conclusion you need to decide what you want.  A greater dispersion of back ground music for everyone in the house or critical listening for a few staying with in the sweet spot.

The only way i have ever heard of two sets played together is as stacked units lke the original stacked advents and the original stacked jbl l100.
Has Anyone Ever Run TWO Identical Pairs of Speakers ?

Don't listen to the negative comments, as it ain't necessarily so.

Sometime ago I tested mine by disconnecting the enclosure on one side and connecting it in parallel to the one on the other side. I then played a mono track. I was shocked as I didn't believe there would be any difference.

Caveat: just be certain you won't be damaging your amp by not having a load on the unused channel.

Warning: do not connect them in series as you will halve the impedance, so even 6 ohms will become 3 ohms.

You're not going to muddle the sound and it is likely to sound better as you'll be doubling to impedance, which will reduce your amplifier output but importantly it will also reduce THD+N. Each enclosure will be reproducing around half the volume which is a bonus. I heard people say you'll mess timing, but honestly does it really make any difference if the speakers are in one large enclosure or two?

Don't take anyone's word. Try it for yourself and trust your ears.