The guru on fuses:
Months ago I posted a link to one of my patents..I never said on this thread. Pissed that people think I am a liar. Been on here for years..no need to prove myself to the ignorant dilberts. They should make their own discoveries and findings let them post their own patent links. They have disabled hearing. And now for some chilling. Tom |
So 2 design are you say I am lying ? Rod magnets are about as cheap as the wine you drink, 2 bucks each. Set up your own demo and listen in the room or close the door and go into an adjacent room and listen or go to the bath room you will be able to hear the difference over those noises also. Well in your case maybe not. Tom |
I did the fuse and magnet demo for my they don't care daughters and 2 grandsons. They couldnt understand why others denied hearing any difference when it was so huge to the 4 of them. The 9 year old grandson described those that say they couldn't hear a difference like that of him trying speak to his 91 yr.old grandmother standing at her face and speaking very loudly..nearly deaf. Tom |
Shear is in all shapes and materials just look around. You are blind to sound even when its in front of you. Think of that ugly reflection in your mirror and how that surface feeds back sound. Electronics can not overcome poor choices of material shapes and boundaries. Better choices come first. Only the magnets are plated. For 1 of my patents I remove material to add more reactive materials to make the device operate at its prime resonance point of contact. So by broad definition, the contents of the device are plated over. Shallow plating applies to your imagination. Tom |
Hear ya go George if you can understand this read.. Jon Dahlquist was the speaker designer Debbie Miles my seismologist friend coined the phrase interfering energy as we both have designed products that reduce a polarity of shear. Shear does return to the source and therefore generates interference. Shear is how a speaker works.Some energy moves straight off the center of the cone or membrane. The rest moves on both sides and thru the cone..and guess watt it hits the surround and the frame and returns back down the cone and interferes with the note that's coming its way. And it also bounces off the dust cap.. A head on collision...same goes for your audio room. The world is not just compressive it is also shear. Shear upon impact is like breaking all the balls when playing pool. Energy goes everywhere and into the next material boundary.. Try this on. Your fuse element is included..its there if you have eyes and a mind. https://www.olympus-ims.com/en/ndt-tutorials/flaw-detection/wave-propagation |
Use an RTA and record the difference and post them. Years ago I experimented with a friends speaker a DQ12 it has a place for 2 fuses. I had only 2 magnets in hand so I only replaced the fuses in 1 speaker. Turning the system on and trying yo hear in stereo both me and my friend had to sit 2/3 off the center axis of the speakers towards the speaker that had fuses so we could hear that DQ12. Of course this was not left this way. Tom |
Another friend has Legacy speakers biamped. Listening we could both hear an imbalance in image and we had to keep shifting our seats. I replaced the fuse in the right chn. amp problem solved. He ordered cryo Acme brand silver fuses for 20 bucks ea. and when I returned I installed them for him. Nice jump in sound quality over that vibrating metallic dingle berry that is now in the trash..fuses are subjected to shear wave interference and it carries on from there. Tom |
Shear waves travel in more than one direction and when they encounter another boundary material they change speed and go in more than one direction again. This repeats until there is no boundary or no motion. Shear in materials is why and how we can tell the difference between brass and lead. Knowing how shear works allows us to design better sounding and more efficient audio products..even the lowly fuse with at least 3 surface boundaries for shear wave resonance to ricochet off. Tom . |
I know how sound travels in materials.. After seeing this video and recognizing the motions we at Star Sound developed the Platter Ground this video https://youtu.be/GuCdsyCWmt8 puts a scope on the implications of shear wave generation. I met with a fellow company member who is a geophysicist and we wrote the following in September of 2016. The stylus makes shear because it is physically bumped as it travels in the groove in the groove. This is a purely mechanical process. Part of the shear energy mechanically excited by the stylus travels through the record to the center or the outside of the record depending on the movement of the stylus. The energy in the vinyl interferes with the sound when it bounces off the edge or center of the record, and travels back to groove creating an additional vibration on the stylus. The stylus has such a fast shear velocity that the energy - both the music and the interference - that it then can be translated very quickly and cleanly into electrical pulses. The shear going to the outside of the record will always be behind the stylus because it is having to travel the distance to the outside edge and back plus the distance the stylus has moved since the shear wave was created. The distance the stylus moves is increased to the shear traveling to the outside because the outside edge is physically moving faster than where the stylus is. This is a velocity that has an acceleration component due to the angular momentum of the record - ie we are now into an equation with a first and second derivative. The vinyl has a slow enough shear velocity that the shear going toward the outside edge will miss the stylus on its return from the edge and go to the center of the record. The shear energy going to the center of the LP will move through vinyl that is traveling slower and slower, so when it bounces off the center label it will could be in front of the stylus. This is the energy that the Platter Ground removes. Also since the stuff bouncing off the outside edge of the record is behind the stylus, the only shear that can interfere is the shear coming from the center of the record, not the outside edge. The mechanical world has many aspects that create complexities. The rotation of the record only affects the energy traveling in it, not the energy going from the stylus to the magnets in the tone arm (the arm is not moving much). I suspect that the platter ground creates the greatest effect when the stylist is on the outside 1/2 or so of the record. More discussion. We see that the needle is creating a diagonal side to side motion creating the information of stereo. That diagonal has a shear component and a compressive wave component moving through the record. The weight on the center removes both. The slit in the Platter Ground allows the compressive waves to go into the air (not big enough to hear) The shape of the inverted cone with the slit. It fans out the waves that then interfere with themselves which can’t go around the cone because the slit breaks up their travel. Those that may escape will travel the height of the cone. The energy is dissipated as a very small amount of heat. Mechanical grounding of the speaker is real because the movement (vibration) of the center of the speaker sets shear waves moving through the speaker membrane as well as the speaker cabinet. Only one of the polarities of shear makes music the other interferes. I have no direct experience but some of what I see with the hex mat will reduce shear wave interference on a record similar but different to our Star Sound Technologies Platter Ground. http://v2.stereotimes.com/post/star-sound-technologies-platter-ground https://www.hexmat.net/ That’s all for now. Tom |
Shear wave elastography or something equivalent if offered by Kippel would be a novel and useful tool to measure surface vibration and deformity of a speaker and any material or device even a fuse element. In a short search there is no mention of wave types on their site that I can locate. I guess I will write them. Tom |
bad2design how about a fix for the dispersal of shear that is inherent by scripture on any piece of vinyl. Ask your digital fixit clan how to recognize that and what there digital correction maybe on a record play back before and after the shear wave reaches the stylus and generates interfering energy? Tom |
Ok and then there is this bending ..wave speaker...in the animation it reminds me of a fuse under power. One of the springy ones will be worse than a solid element. If poorly terminated the wave front will continue to modulate and have a polarity travel back to the launching pad. Like to see how this speaker is terminated. Will the response on the outside of the device be the same as that on the inside..thinking of a Walsh driver. Tom https://www.bendingwaveusa.com/technology/ |
So what is the input signal when it has been corrupted by the same mechanical reading of the shear wave which is much of the wave type pressed into the vinyl. Those wave motions are the shear and also mixed in are the polarities of shear that travel the material. Like to see the removal of the interference in the digital domain without corruption of the original signal. Like to know and like to hear the results. Tom |
What I understand is that sound waves just dont leave a surface and propagate into the air. Some of those waves become shear waves and return on the same surface to the point they were generated..same on a cone or flat surface same on a bending wave speaker..the returning wave creates interfering energy. The cures for this relief can generate other negative factors like mass loading the edges or over damping. Glad I have you thinking and exploring things you never had.. In search of the missing part of your brain. A fuze element is continually banged around by ac variation generating shear in the thin walled glass tube and the 2 endcaps. There is no 100% relief for the vibration to exit the casing except when the unit is off or when its resonant operation interfers (bad relief) with the actual stable starting point of any quality audio device the ...power supply. No one wants a low quality power supply especially when the cure is just a phone call away. Tom |
When the longitudinal wave of a bending wave speaker hits any boundary the wave becomes a shear wave with 2 polarities at least 1 of the polarities will be returning and interfering with the next wave launch. This same interference displays the same return on a record thru the vinyl and surface. Shear constantly moves between the paper label center and record lip. The stylus plays the recording and the returning echoes are mixed with the music the stylus must translate but not totally..Another incidence of interfering energy. There are a couple of devices I see reducing the interference. Tom |
