charles1dad, the importance of doubling down depends on how linear the impedance plot of the speakers are to begin with, and how much power can be delivered once there. The OP 3.7's have an admirably flat impedance plot, so it's less of an issue here. Thiel's recommended power output would suggests about a minimum of 400 Watts into 2 Ohms. So the Aelius's measured 440 Watts is within that margin. Keep in mind the 3.7's have a sensitivity of roughly 85 dB/Watt at that impedance.
Sure it's valuable to know what others have found to work for them, to try and get a consensus, but I have no idea who most of these strangers are, what there biases are, if they have any real experience, or have any idea if they know what there talking about.
Some reports mirror my own findings, other report things I've heard, but have found that we have different priorities, other reports contradict my own experiences, others appear to be pushing an agenda without any true experience with the particulars at hand. I try and find a pattern from Audiogon posters to affix a personal value to their inputs. Many different people choose various things for a myriad of reasons, not all of which make a lick of sense. I try to include those things that are objective and have proven themselves to most likely to be repeatable. Lots of factors? Yes, including these. As for opinions, well everyone has one, and so do I.
