05-22-09: EyediverGetting the model name (Ohm 5 vs. OM-5) and the dispersion pattern (dipole vs. omnipolar) wrong indicated to me that you hadn't fully considered what the speaker was and what it could do. The dispersion pattern has everything to do with how a loudspeaker will energize the room and where you should place it. The OM-5 is a bipolar verging on omnidirectional. Although a dipole also radiates to the front and the back, the back wave is out of phase with the front and cancels radiation to the sides as well as a significant amount of bass. I mention the Mirages because I've owned Mirages for over 12 years and am quite familiar with them.
...The Om-5s in particular I had stuffed into a 15' by 30' room ... Not sure what part of my short review of these felt particularly dismissive to you compared to any of my other very short reviews.
But what I know about Mirages is true of any good large floorstanding full range speaker: they are capable of very exciting and engaging music reproduction, but they also require more time to get to know, to break in, to optimize with cabling, and can be very picky about placement. Some reviews of large floorstanders in Stereophile indicate that they are sensitive to location within an inch. In a 20'x30' room, I can't imagine anything but a large floorstander with lots of amp power behind it energizing that space properly.
I have a pair of 1996 Mirage M5si bipolars that I've had at three different houses. In the most previous house, they definitely sounded best facing straight forward, but in my current listening room, they *definitely* sound best toed in 2", and in both cases are about the same distance from the wall behind them. In the previous house the side walls were much further away, however.
Speaker placement takes time and patience in general, but is particularly true for full range floor standing speakers. I suspect you are not spending enough time with each speaker model, at least with the big ones.

