Ampdog
R.I.P. 23 June 2022
I have just read another plea on how to deal with these - this was from Francois regarding his friend's Kappa 5.2. Every now and then they mince in: Loudspeakers apparently having impedance spans of more than factor 10, and with the particular peculiarity (I call it problem) of dipping below 1 ohm at some frequency(ies). (Please add other brands.)
In the past I have briefly asked why this should be so - technical explanation if necessary but not only, so that we can all learn. What is going on with the cross-over*, or is there some other insurmountable factor in the whole system that forces this?
This is not only a technical question; it is asking all members having had experience of such, what and why these 'alien' characteristics, is the response so much better that there are no alternatives - there are, after all, many loudspeakers often lauded for their realism without exhibiting these undesirable artifacts. Why should one buy these; or why have they been preferred by those who listened?
I am calling on mates like Timber_MG, John Curl, Vaughan, Shonver, et al who have dealt with loudspeaker design (apology to members left out) to come forward here please. As said before, there is even a vague suspicion that this frenetic impedance thing is now becoming a snob factor. I must have some Irish genes somewhere: I object! There are already too many deviants on the audio scene.
My basic network knowledge says that capacitors and inductors can also be used for 'lossless' transforming of one impedance to another, and designers know that cross-overs very often contain extra such elements. Past are the days of four-component cross-overs, and with modern software and simulator programs - what is the problem?? Can the fundi's provide an amplitude/phase plot of such a loudspeaker with their comments please?
In the past I have briefly asked why this should be so - technical explanation if necessary but not only, so that we can all learn. What is going on with the cross-over*, or is there some other insurmountable factor in the whole system that forces this?
This is not only a technical question; it is asking all members having had experience of such, what and why these 'alien' characteristics, is the response so much better that there are no alternatives - there are, after all, many loudspeakers often lauded for their realism without exhibiting these undesirable artifacts. Why should one buy these; or why have they been preferred by those who listened?
I am calling on mates like Timber_MG, John Curl, Vaughan, Shonver, et al who have dealt with loudspeaker design (apology to members left out) to come forward here please. As said before, there is even a vague suspicion that this frenetic impedance thing is now becoming a snob factor. I must have some Irish genes somewhere: I object! There are already too many deviants on the audio scene.
My basic network knowledge says that capacitors and inductors can also be used for 'lossless' transforming of one impedance to another, and designers know that cross-overs very often contain extra such elements. Past are the days of four-component cross-overs, and with modern software and simulator programs - what is the problem?? Can the fundi's provide an amplitude/phase plot of such a loudspeaker with their comments please?
