Tobb: Thanks for letting me know these are not the pair from STL (I put '(?)' as I was not sure). I am confused on one point however and that is the spec. for AERIS is similar to Focus SE (around the 200 lb) mark and the Helix is listed at 320 lbs per side. How is this only a 10% difference?
Please also look at my post where I said that I would have to reinforce floor joists in MY 2nd floor listening room 'for best effect'; I meant two things, (1) that much has to do with how my room is constructed currently and (2) for BEST effect I would do it, not because it is mandatory.
Thanks for letting me know that only 4 channels are needed and not 6. I thought I had seen 2 pair (1 on Audiogon and one under review posted online) with 6 channels of amplification, one of them using a very expensive array of Wavac tube amps; so if I've made a mistake viz. the current design of the speaker, it was definitely unintentional! Your for-sale ad lists 3 pair of binding post per speaker so it might help to list out the options for amplification be it 4 or 6 for any prospective buyer.
Insofar as subs, I wondered the same thing myself but the last owner of Helix I spoke with and listened to them in his home stood by the fact that subs were best. At any rate, I had no intention of introducing confusion here.
Thanks again! Where are you located? If your Helix are the forerunner(...) I may fly up and take a listen.