March 15th, 2018, 7:25 pm
March 16th, 2018, 9:41 am
March 16th, 2018, 10:38 am
dberning wrote:Just to further clarify where I am coming from on this, consider high-frequency signals that leave the amp and pass to the speaker cable. These signals could be noise or left over unfiltered residue from D to A conversion, stuff outside the normal audio range of hearing. If the speaker cable and source impedance of the amp and the impedance of the speaker were all matched, this high-frequency energy would be dissipated as quickly as possible because 100% would be transmitted to the speaker (minus losses due to dc resistance and radiation). If the matching is less than ideal, some of that energy would be reflected at the interfaces, and would rattle around back and forth in the cable and some could potentially be back fed into the feedback loop of the amplifier and even fed to the speaker at a later time than the initial corresponding signal.
Now all of this may be of no consequence and I have no way of verifying whether this could present an issue in any particular audio system, but it is an issue in wide-band video systems. I recall working with some video amplifiers that would oscillate if the output cable was not terminated with 75 ohms at the far end of the cable.
David
March 16th, 2018, 12:15 pm
March 16th, 2018, 12:30 pm
ratbagp wrote:So is the inductor installed at the amplifier end or the speaker end?
ray
March 21st, 2018, 4:42 pm
March 21st, 2018, 6:20 pm
March 21st, 2018, 7:05 pm
March 21st, 2018, 7:22 pm
J-ROB wrote:..._ .. . _. _. ._
March 21st, 2018, 7:23 pm