Here are the ORION+ loudspeakers.

You can purchase them as a complete, custom-built system from Wood Artistry, including all electronics, cables and interconnects and ready to be plugged into your preamplifier. 

You could also build up everything yourself from the available extensive documentation, material lists, and blank printed circuit boards. We can even help with pre-cut wood and assembled electronics. Depending on your construction skills, time, and money, there are several ways to obtain a pair of these outstanding loudspeakers.  

Your search is over!
ORION+ will be the last loudspeaker! 

It is possible to reproduce a stereo recording in an ordinary living room such that listeners have the illusion that the two loudspeakers have disappeared. When they close their eyes, they can easily imagine to be present at the recording space, as they listen to the phantom audio scene in front of them. 

The vast majority of loudspeakers that have been sold - the typical box speakers - can only produce this effect to a limited degree because of a fundamental limitation: they radiate sound into the room with different intensity at different frequencies and angles, though they measure flat on axis. Consequently the many reflections from room surfaces are sonically colored in a way that is characteristic for box loudspeakers. We always recognize the sound as coming from a box rather than being live. It is the generic loudspeaker sound.

It has been a fascinating journey for me
to come to this understanding

Loudspeakers with frequency independent, constant directionality such as omni, dipole or cardioid loudspeakers, cause reflections in a room that are essentially delayed replicas of the direct sound and which are therefore less colored. Your ear/brain perceptual apparatus does not get confused by sound replicas. Instead it compares them to the familiar acoustic behavior of your room and readily blankets the redundant information and thereby the room. This automatic brain response is related to the Precedence Effect in psychoacoustics and is essential for creating the illusion of "being there" by withdrawing attention from the living room acoustics.

It has been a fascinating journey for me to come to this understanding. Early on, electrostatic panel loudspeakers had intrigued me, because they seemed to do something fundamentally right when properly set up, and this despite their obvious limitations. I can see in hindsight that a few loudspeaker designers had pointed to the benefits of omni-directional loudspeakers. The ORION+ has demonstrated to me what more is possible in 2-channel sound reproduction, provided that the recording contains natural spatial cues and is not merely an artificial sound mix. 

Accurate sound reproduction is in reach for you too. Surprise yourself with the believability of the illusion when two loudspeakers properly stimulate your room, ear and brain. You find yourself lost in music and space.

Hearing, Loudspeakers and Rooms       Accurate Stereo                  Siegfried Linkwitz, August 2009

A study of the PHOENIX project will give you useful insight into the theory, design and construction of an open-baffle speaker and the necessary line-level crossover/equalizer. The completed system allows you to experience the room-acoustic benefits of dipole radiation. 
Adding just the dipole woofers of PHOENIX to your existing system could correct low frequency boom problems. 

THOR is a sealed-box, monopole subwoofer. It could extend your sound system's very low frequency capability or it can be added to the ORION in a Home Theater setup. The theory, design and construction details given in these pages make building the THOR a worthwhile first do-it-yourself project.

The ORION loudspeaker has a smaller footprint than the PHOENIX to fit the widest range of domestic situations. It is an open-baffle loudspeaker of the highest sonic accuracy and refinement. It incorporates not only what I learned from previous exercises, but also takes advantage of the latest in driver technology. You can purchase construction plans for it as well as all necessary assemblies. You can build it yourself from grounds up, at an estimated cost of $2200 plus 60 hours of your labor, or you can have it completely built by us.

PLUTO is a much smaller and lower cost 2-way speaker that captures many of the desirable characteristics of ORION, yet is based on the conventional sealed-baffle speaker concept. PLUTO is self-powered and well suited to a very wide range of applications and environments. It can be build at a cost of only $700 and 30 hours of work. 

You can also purchase PLUTO ready built and, if desired, add subwoofers at a later time. Thus you would enjoy a loudspeaker system that seriously rivals ORION, but is better suited to smaller listening environments.

Whether sealed baffle PLUTO+ or open baffle ORION, they each offer highest accuracy and highest value in their respective approaches to loudspeaker design, though they differ significantly in their cost to you. 
Going to higher priced exotic components in the ORION System is unlikely to improve sonic accuracy. 
Likewise, I would not know how to reduce the cost of PLUTO+ and preserve its ability to deliver a similarly satisfying illusion of reality. 

To get a taste of the large number of considerations that enter into the design of a loudspeaker you might read a ground breaking "Loudspeaker System Design" article. It was published 1978 in Wireless World magazine and describes a three-enclosure loudspeaker with active delay and crossovers using drivers that were highly regarded at the time, KEF T27, B110 and B139.

Check out the topics that are listed in the column on the left hand side of this page. I hope that the material presented here will add to your understanding of what is necessary for accurate sound reproduction. Regrettably, much misinformation and outright nonsense has been published to promote certain "high-end" audio products. The power of suggestion works exceedingly well, when listeners do not trust their own hearing. I recommend to re-calibrate yourself frequently. Listen closely to all sorts of non-amplified sounds in order to recognize and remember natural sonic scenes. Without a reality based mental reference it becomes an endless and futile pursuit to listen for differences between speakers and equipment in order to find the least falsification and the closest illusion of live sound.