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

, at least the efficiency should be in similar range.


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Im running 91 sens FR with SEAS W18E001 dual each channel and having success, But best to cross the W18  low, say 1500hz. This adds a  bass floor to the 4,5 or 6.5 inch FR. 
Now the FR at 97db, the W18's at 87db won;t work. 
So agree, sens has to be at least close

I'm about to go SET amp  and dump the Defy7,,so I might have to dump the W18's and find a  higher sens bass unit to go with the Voxativ 8 AC1A

I have found that certain combinations of speaker pairs produce a better sound than the single pair alone



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Yes I've been experiementing lately and found this to be 100% true.
1 speaker will not make magic happen.
My previous local tech had stacked Acoustic Reserach from the 1970's, sounded great
Richard Gray stacks the Realistic Rat Shak Nova 7B's. Sound great. 
I am stacking a  high sens 91db  FR with dual low sens 87 db Seas W18 midwoofer, xover at 2k, about to adda  2.2 cap and bring this down to 1600hz. 
The 5 inch FR whizzzer cone lacks the low end, the dual W18's come in beautifully.
Success at pairing low sens + relatively high sens.
Pairing dif speakers together is really the only way to go.
This is the new high fidelity. 

But I'll bet the non-casual listener, who enjoys sonic accuracy, would be shocked to hear an acoustically well-set-up quality two channel speaker compared to a mish-mash of various speakers channeled together when volume matched. It's all good; just keep listening!

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No doubt about it, Stacking old Advents, Acoustic Research, Rat Shak's sounds pretty awaesome,,,,TILL

A master shooter likea   Voxativ AC1A with 97db walks into the saloon shooting down all these ~~Frankenstein~~ speakers,, as Adam over at madisound  labeled my Seas W18E001 duals  paired with 91db FR ~~monster~ aka The Frankenstein,,But I am loving this sound vs the Thors with the seas Millennium tweeter. \
= Mix N match works great,, until a  REAl DEAL highs ens super high tech walks into town and blows away all these  Frankensteins,,,lol