It was at RMAF in 2013, so it was likely G1. Quite impressive, I must say. They were not in a huge room, so they had to moderate the level.
Another thought for you to consider; I reviewed the also prodigious Legacy Audio Valor Speaker System for Dagogo.com. I would classify it also as a "will not take a back seat" type of speaker. It also would easily fill your large listening space. Like the Sunray, it's the designer's best effort at SOTA. You will get quite a bit of insight into it from my review. Do not be thrown off because it was reviewed in a smaller room. This is a speaker that can do justice to big environments. I have heard the larger Legacy speakers in the large ballrooms of shows and they have no problem generating appropriate sound to flood the space.
I especially enjoyed the enormous 15" mid-woofer/midrange coaxial driver. I have heard nothing like it, and the utter ease of such a midrange presentation is alluring. The fact that it is coaxial is also unusual. The Valor does imaging quite like a full range speaker, something that I have not seen in too many big floor standing speakers. Though I did not get to hear them in direct comparison, I believe the Valor would be able to compete well with the Sunray in terms of LF, both in quality and extension.
You may have your mind made up, but I thought I would mention it as there is a dealer, Audio Excellence, in Ontario. At least might be able to hear it if you have not previously. Legacy is also very good about working with customers to do custom orders. You may enjoy reading the several articles I did for Dagogo.com in regard to the development of my Legacy Whisper speakers. They were taken from stock to being given upgraded internal wiring with upgraded caps, and finally reworked entirely to become what I call "crossover speakers", that is, fitted with 12 binding posts allowing for use as 1. fully passive with internal crossover and as little as two channels of amplification with Triwiring (can be configured that way without the Wavelet DAC/pre/room correction), 2. Hybrid with active x-over bass with four or six channels of amplification, or 3. Fully active x-over and six channels of amplification. The last two options use the Wavelet DAC/pre/correction. The room correction would likely be very important in your installation.
I have had these speakers with four 15" bass drivers each running with a pair of Legacy XTREME XD Subs, for a total of twelve 15" bass drivers. That proved plenty of easeful LF, at least for me. So, that is yet another option, the Whisper with subs. No problem generating enormous sound, however it doesn't have quite the openness of the big midrange of the Valor. If I was not limited in terms of cost, I would go for the Valor. As it is, I try to simulate some of the same characteristics with the Whisper and subs. :)
