A part of this would also fall on the FM curves (but much more can be achieved with the curves) but a specific mention about imaging.
Signal depth:
So the other day, while listening to ambient or electronic album (can't remember what it was), noticed something quite interesting. Most people are trying to see singers or played move on stage L/R and are amazed by their experience (Noticed this when I went to hear a pair of speakers made by Musical Affairs (PhyHP) at a local guys plays, this owner could not get enough of this opera singer moving side ways on stage) .
My first experience with depth was with the class D, and Omni/Dipole (which might have been a bit exaggerated). But with the new system the imaging is so precise, you can follow the signal in depth, which was unexpected! With electronic music you can have a signal running around the sound field. Precisely following something front to back or vice versa is an interesting experience!
Image Height:
so far this has been very satisfactory, can differential excellent vs mediocre recordings. Will add more later.
Image size (*edit- width*):
While imaging is excellent with the Orelos, studio panning can become an issue, or mixing errors. Some times it can just be that this was the best that could come out of the speakers used for post production mixing.
This is from a while ago, but still relevant for imaging
I was listing to Tabula Rasa, Geocentricity
http://en.m.wikipedia.org/wiki/Tabula_RasāMridangam is the instrument
http://en.m.wikipedia.org/wiki/MridangamdOther than a piano, image width can be difficult to judge. Mridangam is a horizontal instrument, which I'm intimately familiar with. This is a set of trials with the curves, ofcourse with the NOS-1 (not a), and prior filter, judging horizontal image size. So will have to repeat it some time.
FM curves
Tabula rasa - geocentricity
(1-highest; 2-mid; 3-low)
*Edit* some of my notes
All red ... too wide, right channel bias
All org .... too wide, right channel bias
Org;grn;grn .... About right (maybe a little too wide). Slightly better imaging.
Org;grn;org ..... Still wide, better imaging
Grn;grn;red ...... Realistic size, good imaging
Grn,org,red ..... As above for both
Redx3 (repeat) too wide
Last different l/r channel FM settings too erratic, better able to float the left channel.
Orang,org,red .... Slightly elongated, better left imaging.
Maybe one of these days I'll get Kavi himself to come over and listen.
Other Orelo owners can add?
VJ
*Edit*Forgot to add the following
Kavi Alexander is the recording artist.
http://en.wikipedia.org/wiki/Kavichandran_AlexanderRecording technique
http://en.wikipedia.org/wiki/Blumlein_PairI've visited Kavi and the place where this was recorded. An Old Church 17th centrury place.
Most of the instruments in stereo reproduction appear as point sources. Symphonies give scale, difficult to judge individual instruments. Piano can give a sense of scale, but it can never give a sense of size. That was the reason for using mridangam, a horizontal instrument with defined width, and close recording. BTW i'll probably stay away from that recording for a while, after the FM trials