Listeners are given information about the setup and procedure prior to entering the room.They fill out a data sheet prior to the evaluation so that Klipsch knows something about their listening habits and home system(s).
There is a fixed selection of tracks specially chosen by Klipsch listening evaluation teams that we use consistently so that we are all familiar with the music and know what details to listen for.
The speakers are identically setup, volume matched, and hidden behind a completely visually opaque, acoustically transparent scrim. Note that they are spread identical distances so the soundstage cannot be physically larger with one pair. The technician selects a distance from the front wall that is equally beneficial to both speakers (ie, does not 'favor' one set)
The listener is alone in the room with a controller for track selection, volume, A/B. That is all. They are given 20-30 minutes to listen to whatever they wish from the selected tracks for as long as they wish in any order that they wish.
Klipsch listening evaluators have been using this setup very successfully for a few years. The results are valid. The only question about this particular survey was that N was not greater than or equal to 30, but we are not after statistical validity per se, only opinions. The more descriptive the responses, the more data we can collect.
That rack is wired with two very nice Crown K2 solid state amplifers. I'm not sure how they are wired (probably independantly into each speaker) but at 4 ohms they are rated at 800 wpc.
How's that for Tech Support? You won't get that from anyone but Colter! Why? Because I care and I took the time to become knowledgable about many different aspects of the company during 18 months.