Hi Sean,
I mailed Mark your post and he could'nt find this thread so he asked me to post this response.
Koester's comments:
Hi Sean, your post is an epic. I've done a once through and only wish to
offer one correction, plus one suggestion. The correction I recommend you
make relates to the listing you gave near the end of your post. Re: cables
of differing nominal impedances dramatically influencing power available
from an audio amplifier. You know it doesn't work that way, but the listing
implies you can only get X watts through a cable of Y ohms Zo, given some
fixed amplifier output (Volts i guess). I can elaborate but I'm sure you
will agree without my spelling it out in detail.
The suggestion I have is to always have in the back of your mind, and that
of all readers here, the electrical wavelength of any audio signal of
interest, as the wavelength is of crucial importance in considering the
impact of impedance mismatches.
I'll go with a reminder that audio amps don't have output impedances
matching their anticipated loads or speaker cables, yet RF amps all do match
(try to anyway) the cables they feed.
As i've said before, I concur that low Zo audio speaker cable is a logical
marriage of RF and low frequency design, and support your cause in this
respect. Cheers Mark Koester (RF engineer)
I mailed Mark your post and he could'nt find this thread so he asked me to post this response.
Koester's comments:
Hi Sean, your post is an epic. I've done a once through and only wish to
offer one correction, plus one suggestion. The correction I recommend you
make relates to the listing you gave near the end of your post. Re: cables
of differing nominal impedances dramatically influencing power available
from an audio amplifier. You know it doesn't work that way, but the listing
implies you can only get X watts through a cable of Y ohms Zo, given some
fixed amplifier output (Volts i guess). I can elaborate but I'm sure you
will agree without my spelling it out in detail.
The suggestion I have is to always have in the back of your mind, and that
of all readers here, the electrical wavelength of any audio signal of
interest, as the wavelength is of crucial importance in considering the
impact of impedance mismatches.
I'll go with a reminder that audio amps don't have output impedances
matching their anticipated loads or speaker cables, yet RF amps all do match
(try to anyway) the cables they feed.
As i've said before, I concur that low Zo audio speaker cable is a logical
marriage of RF and low frequency design, and support your cause in this
respect. Cheers Mark Koester (RF engineer)