Looking for speakers under 3000.00 used

01-24-15: Rlwainwright
The biggest sweet spots I have ever heard came from two very different speakers: Ohm and Gallo.

Different configurations and different looks, but very similar dispersion patterns. The Ohm is omnidirectional and the Gallo tweeter has a 300+ degree dispersion pattern--almost an omni as well.

I've had several Mirage bipole and omnidirectional speakers and you're right--they throw a very stable and 3-dimensional soundstage that stays put regardless of your listening position. You can even ge to the left of the left speaker and still hear a left-to-right soundstage just as you would hear in a live performance if you were sitting to the left of the stage.

A year ago I replaced my Mirage OMD-15s (omni floorstanders) with a pair of Magneplanar 1.7s. To my surprise the soundstage is pretty similar and I can still sit at my computer--to the left of the left speaker--and get a credible soundstage.

I'd recommend a good 2nd hand pair of Infinity IRS Sigma's. The last pair that went up for sale the guy was asking $2750, making this speaker an awesome bargain! The IRS-Sigma used the same cabinet as the later IRS-Epsilon. It's driver compliment included a High energy Emit tweeter, High energy Emim midrange with a transmission line, 6 1/2" IMG mid-bass coupler, 12" IMG woofer and a rear-firing High Energy Emit as depicted in this photo giving the Sigma's a dipole effect.

Like most classic Infinity's these speakers like plenty of power! (think a minimum 200 watts@8ohms, or a lower wattage, but high current amp with robust power supplies). One other caveat, unfortunately the demand for classic Infinitys has given rise to some scammers who sell 'frankenspeakers' and tell outright lies in their ads. If you see ads promising "mint condition, never used, last speakers ever made by Infinity" or if the seller only posts photos of the speakers in their boxes claiming they are "NOS/never used", avoid unless their name is Paul McGowan, Arnie Nudell or Bill LeGall. But don't let that put you off what are absolute gems of speakers.

The Revel 206 tower is supposed to be special.
You may need a subwoofer at some point, however.

Ref #a line ius superb and for best bank for the buck Vapor Sound/audio

Check out Dynaudio. I had the C1's and C1 sig's and I have to admit they had a huge sweet spot and great dynamics for their size. Are you looking for a monitor or floor stander?