I used that technique today, I must say it works pretty well! I have Weinbach 6,1' (Petrof) Instead I tried it with two Royers R-121 and added U67 distant in omni.
Here are some pictures, and mp3's. first Mp3 is from only Royer's and the 2nd one is with U67 in omni. Room is not that big, more like a Piano booth 8x12'. No processing, no reverb...
There is an Apeh 405 on the picture too, I tried that one in the combination with Royers, But U67 sounded a LOT better!
So it is not in the sound clips.
