Do materials alter frequencies and speed?

Nrchy...Actualy, he only lifted 9,999.9 lbs.

Sean...The reason people, including me, give you a hard time is that the effects you cite are important for RF, but trivial for audio. I think. However, if you want to send those Nordost cables this way I will see if I can agree with you.

By the way, my Maggie speakers, although they are 4 ohms, are reputed to be quite insensitive to frequency in this regard. Does this make them less sensitive to the "Sean's effect"? If so I can use some other speakers.

0.25dB down at 20 KHz!!! I am crushed.

Sean...Thanks. I hope I get to try them.

The Maggie MG1.6 crossover is about as simple as it gets. Low pass is 12 dB and high pass is 6 dB. I replaced the inductor with AWG10 air coil, and the capacitors with Hovlands. Three meters is long enough, as I will throw together a special hookup (amps and wires on the floor) for the test. I will drive the Maggies full range, using my Kenwood LO7M amps, which are spec'd flat from DC to 150,000KHz +0 and -1.5 dB. Bananas would work.

For the record...I am a skeptic because the "scientific" explanations don't impress me, but on the other hand I have not listened and heard nothing and thereby formed a firm opinion.

Sean...They look a little strange, but if they fit in banana sockets they will work.

At present I am biwired with 12 AWG for the woofer and 18 AWG for the tweeter. (The lighter tweeter wire started out at 24 AWG so as to serve as a tweeter padding resistor, but one of those wires developed a short and were scrapped). The present wire is "sourced" from Home Depot (sorry about that). It is "speaker wire" not "zip cord" and the conductors are further apart which likely results in lower capacitance.

Sean...I think I will skip the biwire thing for this test. Let's minimize the number of variables.

I don't think that spades work with Maggies. (I am actually a "bare wire" guy, so I'm not up on all the various terminations).

In addition to the Maggies, I will try the wires with my Madisound Odin speakers, which have more extended high end.
Ed.
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When the Audioligist fitted my wife for hearing aids, the first thing she did was to measure the acoustic characteristics of the ear canal. This was factored in to the algorithm programmed into the devices.