No one actually knows how to lculate what speaker cable they need

Mister b4icu...I met the esteemed Mister Low when talking to a sales dude about speaker cables at a nearby audio "salon" (meaning one of the few hifi joints left) and he introduces me to Low who's standing behind me. Low is amazingly passionate about this stuff...cool guy. I use a pair of 10 foot Rocket 33s (the cheapest of that line of cables) per Bill's suggestion (read the stuff on the AQ site about the bi-wire capabilities of these cables for details) from a 12wpc (likely more like 10wpc with the KT77s I prefer) Dennis Had Inspire Firebottle HO (it's a HO...says so right on the front) single ended amp into 99db efficient Klipsch Heresy IIIs. The resulting sound is magnificent. 

Mr. wolf_garcia

I never asked about how you met Mr. Low. Thanks for the sharing, I meet yesterday a chair.

Please be kind to answer my questions:

1. What is your amplifier? Tube (KT77s) What model and brand?

2. What is the cable length? 10 foot (3m)

3. What is your speaker? Klipsch Heresy III

4. What gauge is the cable he offered you? "Rocket" cable does not look normal on the outside" This is the most "technical data" I'd found on the Rocket 33s. The rest is even more BS than not normal looking! Very common on cable makers who are amazingly passionate to rip you off.

I would assume that with your Klipsch (I Have the Forte II with the same efficiency of 99dB/w/m SPL), the tube amp is a good match. The cable, unless it has some capacitance or inductive properties, any would be fine. For the rest of your say about Mr. Low, I would rather meet Miss Pamela Anderson. She seems to me way more "amazingly passionate"!

Below is a link to a not-so-secret calculator that can show how much your speaker cables affect your damping factor.  The calculator is at the bottom of the article on damping factor.

http://www.bcae1.com/dampfact.htm#demo

Thanks mitch, secret revealed!
Well, what do you know, used the formula and my speaker cables are just a few inches longer than optimum. All done by ear and the formula verifies it.