Yes, that magnetic field is clearly audible. Barkhausen noise modulation creates intermodulation distortion through non harmonic spectral components. Interesting enough, it happens only for the reed relay magnetic fields. Other relays don't have the same type of field from the coil.
BTW --- I did the current feedback -- the data I published was of a 3-way JBL system, How Nazi propaganda encouraged the masses to co-produce a false reality.
THx-RNMarsh
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I was almost going to post a few weeks ago that we've somehow managed to avoid Godwin's Law on this thread, but it seems that it's inevitable.
Reed relays are pretty marginal for audio. Of course, everybody in audio knows that. I'm still for silver on silver Shallco switches. They work and sound great! I have had mine working for almost 20 years now in my CTC Blowtorch.
It naturally would seem to follow the mean-spirited dirty politics debating methodology of some. Obviously, the conduct does not rise the level of you know who, but its still playing dirty politics under the guise of audio. Maybe that's what makes forums successful, I don't know.
Impossible to get requested improvement, because passive crossover with its parallel impedance branches does not allow for a true current drive.
I already have. In this thread. Resistors, capacitors and relays have all been shown. FYI some non reed relays also place a steel signal conductor in the magnetic field and have similar issues.
Barkhausen effect occurs in a changing magnetic field, not really an issue with a stable DC supply to the relay coil. It was used as proof of the existence of discrete magnetic domains. You really do seem to like discussing things with little knowledge of the subject.
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You know what he meant. Why would anyone use a line level passive crossover anyway? Seems stupid when you can do a much better active or DSP version.
Ask Planet 10, he loves them, don't know why, he's into minimalism (the less in the signal path the better 🙄) and doesn't sell them (or the concept) maybe?
The more astute of you can probably work out what exactly happened here.... Speaker question: WAW / FAST
The more astute of you can probably work out what exactly happened here.... Speaker question: WAW / FAST
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What about the likes of Kii?
.. and contacts -- who needs actual switches or relays in the signal path any more, anyway?
"and adds none of the electronic haze any active XO gives". (Planet 10 quote)
Where's yours? 😉
Where's yours? 😉
I did a number of experiments with a setup where the output impedance can be dialed in from lowish to highish. Not all drivers work better with current drive, and some drivers work better with voltage drive for high and current drive for low frequencies, or the other way around. It is very component specific.
Bruno uses a split current/voltage drive for the Kii woofers. Really not that hard to do. Point is: it depends on the driver what kind of drive delivers the lowest distortion, and it is frequency dependant as well.
Rod Elliott recommends experimentation with a combination of voltage and current drive because as you say it's specific to each driver
Simple and gets the job done well enough, I tend to trust Murphy. Better for you may not be the same for me. 🙂
Devialet is another one. Not sure what they do - or if they are any good!
It'll be interesting to see Purifi's "new" drivers when they appear.
DSP is simpler, really, and much more flexible and accurate. And far easier if you want to try several variations!
It'll be interesting to see Purifi's "new" drivers when they appear.
DSP is simpler, really, and much more flexible and accurate. And far easier if you want to try several variations!
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