Originally Posted by Shadowed
In that case, I saw a test results where nobody could tell any difference in any cables.
This may be a duplicate reply, since my router intentionally disconnected me from the internet at 11:30 PM to allow me to get some sleep.
Had to reset it.
I stand by my comment that 00 welding cable is great, but only if you need to drive 200 Amps through a voice coil.
There are some that believe high resistance speaker wire decreases damping and increases ringing. That should be audibly apparent, since most modern solid state amps have a very low output inpedance, unless modified (increased) by less negative or some positive feedback to sound more "Vacuum-Tube-Like".
I believe some of the Sunfire amps and some legacy Fishers had that feature - a variable feedback pot that smoothly changed inverse feedback from Voltage (Solid-State) to Current (Vacuum Tube) mode.
There are the Litz wire fanatics - Litz wire strands are individually insulated from each other. Has some beneficial effects at RF frequencies but not likely at audio.
If feedback reduces the output impedance of a modern amplifier to a milliOhm, one would think 50 milliOhms of crappy zip cord would significantly affect the damping or Q, but, unfortunately, the speaker impedance is in the equations and a few tens of milliOhms means nothing to a 3 or 8 Ohm speaker's damping.
There are also ways to get around the effects of crappy zip cord - motion (servo) feedback, second voice coil feedback or a Kelvin (4 wire-connected) speaker. Kelvin is done all the time with high-performance power supplies. A pair of "marginal" wires drives the load, voltage is sensed right at the speaker coil and a pair of much smaller, differential, shielded (twinax) wires takes the feedback back to the amplifier.
Has anyone ever heard of a Kelvin-connected speaker?
Layered heavy-duty aluminum foil, separated by mylar or Kapton sheet or even cheap waxed paper might make an excellent under-rug speaker wire. Kind of an audio equivalent of an RF stripline. Never used it but it sounds like a good idea.
Shows how much I know - I ran 14 gauge zip cord 25 feet across the cathedral ceiling when our new house was being wired. In retrospect, I should have done the layered aluminum foil under the carpet under the carpet.
BTW - one of the benefits of modern flat LED backlit LCD panels is freedom from the deconverging effects of large, unshielded speaker magnets on CRTs. My Sunfire True Subwoofer used to drive my 32 inch Trinitron crazy.
Also BTW - the reason I said to avoid vented low end speakers and subwoofers - all mine are also vented. In fact, I'd mentioned epoxying a few pounds of extra weight to the Sunfire's drone to extend the low end from 20 to 16 Hz. At a later date, the amplifier blew up and Sunfire replaced all the output transistors and drivers for their standard $250 repair charge and never mentioned the added drone weights. The weights had nothing to do with the failure.