Lou wrote:
Voltage is determined by the amp, though the load can cause a drop in the
voltage it should not be much of one. The current depends not upon the amp,
but the load, if the speakers want more current to move a lower frequency,
due to further excursion of the driver, then it will demand more current,
though not more voltage as it cannot demand voltage, from the source. I work
with a LOT of EE types, it does not mean they understand electronics, the
ones I work with know PLC's, 4-20 loops PID loops, etc, but not electronics.
That is why I often find myself correcting them on this very issue.

So, you worked with some EE's and by your standards, they don't
understand electronics the way you do. Were you "correcting them" or did
you understand what they are saying?

It is
not that they are stupid, it is just that this is not their area of
expertise.

This is really as simple as applying Ohm's law.

The amp can be modelled as a voltage source with a small resistance. The
cable is connected between amp and load. You measure the voltage across
the load, over the bass frequency range of interest. If one cable has
"more" bass response, the voltage across the load will be higher than
that for the other cable. Use resistive loads to simplify things in your
mind. Also compare at 1 KHz to take out the resistive effects of the
cable due to length.

Now, can you do what I asked, which is to explain how voltages across
the load can stay the same if the current (or amperage as you called it)
change?

In DBT's of cables, it is standard fare to match response to within 0.1
dB. So people have done that all the time. In fact, seldom would they
look at response at the bass end, since that is totally dependent on the
length (i.e. the series resistance), and not on capacitance or inductance.


--
Best Regards,

Lou