10-Jul-2022, 19:13
(10-Jul-2022, 10:44)Jean-Marie Wrote: Believe it or not, but I have been told by Pierre-Emmanuel CALMEL, that the actual output resistance of a Devialet is in fact the resistance of the binding posts given how low is the actual resistance of the amplifier itself.
The resistance of a cable being rhô * length / section, doubling the section halves the resistance.
Now is it audible, probably when you are a given threshold, probably.
What is that threshold, I don’t know and I would posit that it does not depend solely on the amplifier. I would suspect that the load itself (the speaker, especially the filter) have a big effect and therefore whether or not it makes any discernable difference to your ears and brain is up to you.
Jean-Marie
Hi
Just a reminder, that the thread topics is the speaker cable.
However, the DF or damping factor, is a figure that describes the efficiency of damping the speaker (membrane). The higher the DF the better the damping.
Low DF amps, as tube Amp's have a very different characteristics than high DF SS Amps. The hybrid version, like McIntosh, is one I don't like at all.
The more realistic the speaker sound's (I own a Klipsch Forte II) the more impact a good DF has.
For this example, keeping in mind that the Forte II has an efficiency of 99dB/w/m SPL, it almost needs no power to sound loud. My Amp. has some power meters, that run at most to 3W peak, when it gets loud. Rest of the time it is about 0.1-0.01W...At 8 Ohm's it's no current or effort. Still the cables matter.
So it's not the power and also not the current.
