Sort of like the late night Bose commercials, where they turn up their radio, and say, just listen to that full rich sound!
"The amplifier have a lot of tap-the-tempo with the foot features!"
Yes it's very common here!
Yes it's very common here!
SQUID magnetometer? Or still too much interference? I'd also like to add that this is a rare case of superconducting and quantum being used correctly on this thread and forum. ;-)
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Nezbleu, I completely agree with you - I strongly dislike those who rip off people, and sell stuff that doesn't do a thing for money. To me, Bybees do not fall into this category, I have heard their effects just too many times to ignore and think of them as snake oil. Actually, I am quite shocked that people have such a vastly different experience elsewhere. The only reasonable explanation is that all the Bybees we heard were installed by the same person, who unfortunately passed away recently. Apparently he knew very well what he was doing, or he got different units than the rest of the world got??
Probably the demag-the-vinyl only works if you use fullrange electrostatic speakers. Because speaker magnets..... ever get one near a CRT TV?
We noticed this phenomenon first about 12 years ago, and have been using it since countless times, with all sorts of systems, but none of us has electrostatics - all regular electrodynamics speakers. The effect is on the record, not the system. You can demag the LP in your garage, far from the system and the effect is there.
I assumed that people are familiar with the use of tape head demagnetizers... use the same procedure on the record that you would use to demagnetize a tape head. (Use proper demag procedure, otherwise it's not a demag. Proof of concept: if you don't demagnetize properly, just turn it on and off, there's no sonic benefit.) Do this while holding the LP in your hand away from your rig, NOT on the turntable, near the cartridge!!!!! Especially with your phono stage on...
If you are 6ft away from you cartridge, it will pick up barely any magnetic interference if any (faintest hum when your system is on). The demagnetizers have a strong effect near the tip of the demagnetizer, but the field falls rapidly and it's so very weak 6ft away even the cartridge has trouble picking it up.
Stay clear of interconnect cable and speaker cable ends. Demagnetizing your cable ends resets the connection as if you have disconnected and reconnected the cables and the connection has to settle again. Of course, only if one believes in such nonsense as cable connection break-in. I wish I did not, would make life a little easier. 🙂 With some systems / ICs you don't notice any connection break-in time, with others it can take days. (Hint: more silver, longer break-in. Zero silver in your system, and you might not notice any break in time - full silver, and will sound like crap (extremely thin and shrill) for two days after you reconnect your interconnect😉.
Please demagnetize the record only 😉
PS: anyone tried demagnetizing your vacuum tubes?? Especially ones in operation? I did that on my 807 power tubes (fed by 700V supply, amp on). Even with demagnetizer close to the tube, there was no hum (with 96dB eff speakers). After a couple run of demag in the course of 2 days, the blue glow of the tubes diminished greatly (while the blue glow was constant during the previous 100h of use): previously the very strong blue glow was clearly visible from far away in daylight, after 3 treatments a faint blue hue can be observed upon close inspection, or visible from far with the lights off at night. Hint: blue glow in a tube can be the result of gases being ionized (=not good vacuum). The getter is supposed to collect the gases, however, as they are ionized (especially with 400-700V field pulling on them in case of power tubes) they are trapped between the cathode and the anode, and don't have a chance to reach the getter when the getter is active (=when the tube is hot). Demagnetization allows the gas to escape from the plate structure, and be absorbed by the getter, cleaning up the vacuum, hence, less blue glow and longer tube life.
The behavior of getter has been known a long time. I tested if the getter action can be facilitated by demagnetization. And it can; ). Easy trick to get longer life from our precious power tubes. I recommend this procedure once a month - should delay greatly the onset of cathode poisoning.
I assumed that people are familiar with the use of tape head demagnetizers... use the same procedure on the record that you would use to demagnetize a tape head. (Use proper demag procedure, otherwise it's not a demag. Proof of concept: if you don't demagnetize properly, just turn it on and off, there's no sonic benefit.) Do this while holding the LP in your hand away from your rig, NOT on the turntable, near the cartridge!!!!! Especially with your phono stage on...
If you are 6ft away from you cartridge, it will pick up barely any magnetic interference if any (faintest hum when your system is on). The demagnetizers have a strong effect near the tip of the demagnetizer, but the field falls rapidly and it's so very weak 6ft away even the cartridge has trouble picking it up.
Stay clear of interconnect cable and speaker cable ends. Demagnetizing your cable ends resets the connection as if you have disconnected and reconnected the cables and the connection has to settle again. Of course, only if one believes in such nonsense as cable connection break-in. I wish I did not, would make life a little easier. 🙂 With some systems / ICs you don't notice any connection break-in time, with others it can take days. (Hint: more silver, longer break-in. Zero silver in your system, and you might not notice any break in time - full silver, and will sound like crap (extremely thin and shrill) for two days after you reconnect your interconnect😉.
Please demagnetize the record only 😉
PS: anyone tried demagnetizing your vacuum tubes?? Especially ones in operation? I did that on my 807 power tubes (fed by 700V supply, amp on). Even with demagnetizer close to the tube, there was no hum (with 96dB eff speakers). After a couple run of demag in the course of 2 days, the blue glow of the tubes diminished greatly (while the blue glow was constant during the previous 100h of use): previously the very strong blue glow was clearly visible from far away in daylight, after 3 treatments a faint blue hue can be observed upon close inspection, or visible from far with the lights off at night. Hint: blue glow in a tube can be the result of gases being ionized (=not good vacuum). The getter is supposed to collect the gases, however, as they are ionized (especially with 400-700V field pulling on them in case of power tubes) they are trapped between the cathode and the anode, and don't have a chance to reach the getter when the getter is active (=when the tube is hot). Demagnetization allows the gas to escape from the plate structure, and be absorbed by the getter, cleaning up the vacuum, hence, less blue glow and longer tube life.
The behavior of getter has been known a long time. I tested if the getter action can be facilitated by demagnetization. And it can; ). Easy trick to get longer life from our precious power tubes. I recommend this procedure once a month - should delay greatly the onset of cathode poisoning.
The same then must be true for ground rhino horns as a prick stiffener.
The whole rhino species will fall victim to just too many old asian men
and their witch doctors.
Yeah. That is significant. Just imagine a magnet on a turntable.
The turntable has to work against the magnetic field of the earth
for each half turn and then must brake against the field on the other
half of the turn. The resulting speed modulation directly results in
phase modulation of the recovered audio signal. That is the worst
thing that could ever happen.
actually for the longest time the physics department had a squid that everyone used. It was 25+ years old and finally died. But the sample container was less than 1 cubic centimeter, so no way would you get a lp into the thing. A neat beast for sure and used something like 25 liters of liquid helium per day.
Janos, have you tried measuring stray magnetic field from cartridges....this may explain requirement to demag the record after each play.....ie the cartridge setting a magnetic signature into the vinyl.
Another experiment would be to play a record with A cartridge, mute the speakers and play with B cartridge, unmute and play again with A cartridge and see if there is a signature imparted by the cartridge into the vinyl.
I find that ferrite speaker magnets have a signature, and morover this signature can be changed by application of my filter mixture to the magnet/pole piece assy.
Phono cartridges can similarly be changed and for the better.
Dan.
Another experiment would be to play a record with A cartridge, mute the speakers and play with B cartridge, unmute and play again with A cartridge and see if there is a signature imparted by the cartridge into the vinyl.
I find that ferrite speaker magnets have a signature, and morover this signature can be changed by application of my filter mixture to the magnet/pole piece assy.
Phono cartridges can similarly be changed and for the better.
Dan.
That's about the state of the art:
< Magnetische Schirmungen - PTB.de >
(in German)
I have been there some 10 Years ago. They used it for measuring brain currents
and nmr without direct/close contact.
< 8.2 Biosignals - PTB.de >
Sorry, the web site is only partly available in English.
Cobblers !!!!
This assumes that the disc acts as a bar magnet rather than, say, having the poles on opposite faces.
Even if it did appear as a 2-pole magnet, it is rotating in the earths field -- the same as applying an AC demagnetiser.
The magnets in the cartridge are far more likely to be affected by the earths field.
I think I'm gonna wire up a couple of Rhino Horns into my stereo
then grind up a demagnetized Bybee to spice up my love life.
I just need to find that one dead dude who knows how to do it right.
I think some here picked the wrong week to stop sniffing glue.
then grind up a demagnetized Bybee to spice up my love life.
I just need to find that one dead dude who knows how to do it right.
I think some here picked the wrong week to stop sniffing glue.
Just for fun (at risk of harm) I did an experiment waving an N48 1" x 1.25" neo super magnet ~2" over a MI cart at ~13Hz. I did manage to raise a signal maybe 6-10dB below a 0dB 1kHz standard reference tone.
Remember magnetic pickup by the coil requires motion and the RIAA curve is giving an ~20dB boost at 13Hz. So what's the non-uniformity of the LP field who knows? Take the 50nT and from textbook formulas the magnet has 300 gauss at 2" so that's ~ -230dB give or take.
Remember magnetic pickup by the coil requires motion and the RIAA curve is giving an ~20dB boost at 13Hz. So what's the non-uniformity of the LP field who knows? Take the 50nT and from textbook formulas the magnet has 300 gauss at 2" so that's ~ -230dB give or take.
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