now thats a thread worth commenting on.
theres the subjective comparrison and Ill stay out of that for the time being- and the technical one.
From a seated set position and setup propperly- they will both give a very good and flat response.....but there are key differences in what they will sound like due to the way they get the response.
The sound that reaches yoe from the orion will have a conciderable amount of reverberant energy included. That is to say that the room will itself contribute to the performance.
The arguement for this is that when you play katie melua for example- you idealy are attempting to recrate the singer actually in your room.- that means that if she was physically in your room then there would be reflections included in the sound that she generates and they are a natural part of sound. Eq will be used to reduce any severe room generated effects but thats it.
The speakers will need to be placed idealy about 1.5m or more from any serface as being too close will blur the separation and detail of sounds because the ear/brain cant separate these and assumes they are together as such instead of hearing them as reflections (ie part of the environment/room 'sound')
The geddes/gedlee summa aproach is that basically the room should be anechoic or as good as (no reflections) as its the recordings job to give you the listening environment.
So when listening to John Williams in a grand hall, the information is in the recording and you shouldnt try and make john williams play physically in your living room as its shoe horning him in.
geddes approach is to use a CD (constant directivity) waveguide to his own standards (thats fairly well justified I might add) and basically stop the speaker from producing vertually any sound when you move 45 degrees off axis. This will mean that when the speakers are correctly placed (toe'd in alot) the side walls dont give reflections to the sound as if you were in a semi anechoic chamber- and he is successfull in doing this.
There are still reflections when using the geddes approach, but they are way after the fundemental (actual sound from the speaker)( - it will depend on the sise of the room, but were talking 40+ms) and fairly far down in volume compaired to the fundemental too. This means that the ear wont be very sensitive to it.
Which is better??- rather hard to say. there both right and wrong, but I would lean ever so slightly towards the geddes approch on paper as it will fit the massive variance of all music/ films better than the orion.
because recordings happen in a huge range of acoustic environments and the complex acoustics of your room arnt going to alow all the details from 5 or 7 speakers and all there reflections to emulate it as well as a tightly controlled environment like the summa.
Also the orion will produce significantly late information from the rear of the speaker- this complicates the sound and FR further in a surround environment.
the Geddes speakers are overpriced now though Imo. They have doubled in price recently.
just my 0.02p or c as you lot would say