Prog Rock Man
Headphoneus Supremus
- Joined
- Jul 2, 2009
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Quote:
Thanks for bearing with me. Does this happen much in the real world of speaker cables? I have certainly never come across any previous discussion of this.
With regards to science, I have high school qualifications and a high regard for it. I have a career based on evidence. So whilst not always getting the science I see it as the means of providing the evidence.
Yes, IFF (if and only if) one cable has caused a change of sufficient magnitude. Remember, this requires the same amplifier channel used on both speakers, so that any affect on the amplifier is eliminated as a possibility, be it distortion, phase or amplitude funnies, or even oscillation or instability. It also assumes a reasonable damping factor as well.
The fastest possible cable is one which has an impedance equal to the load, but doing so requires inductances in the 10 nH per foot and 380 pf per foot area. As the speaker unloads at higher frequencies, the amplifier will begin to see the capacitance of the cable so may have problems. This is important if the amplifier open loop frequency response remains above unity gain while the speaker has unloaded...this can oscillate a "hot" amplifier.
Since many of these boutique cables sell themselves as matched z, or low inductance, whatever, it's important to make sure the amplifier reaction doesn't confound the test.
john
Thanks for bearing with me. Does this happen much in the real world of speaker cables? I have certainly never come across any previous discussion of this.
With regards to science, I have high school qualifications and a high regard for it. I have a career based on evidence. So whilst not always getting the science I see it as the means of providing the evidence.