Peter Ledermann of Soundsmith - "Reproductive Private Parts" (of a phono cartridge) -
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- Опубликовано: 17 окт 2017
- Stylus to Groove INTERFACE - What goes WRONG, and how to fix it. Peter Ledermann of Soundsmith - "Reproductive Private Parts" (of a phono cartridge) - the Sequel - A seminar given at RMAF 2017
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Fantastic presentation, thanks for sharing!
This man is a freakin' wizard. I'm getting ready to buy a Soundsmith cartridge.
thats the best lession in stylus/generator phisics i've ever got im my lifetime. You're a wonderful teacher, too.
One can always tell that Mr. Ledermann is a gentleman, who has a passion and love for the work that he does, which he obviously does very well. To know that Mr. Ledermann personally adjusted and tuned the Aida I've played has been comforting to know that he has done the best he can for that cartridge's performance in its price zone, which exceeds many other brands at many times more the cost. Thank you, Sir . . . I wish that I could have been a pupil/worker/apprentice to have had such knowledge and skills passed down to me, would indeed have been an honor and a lifetime experience. Continued success!
What can you say, WOW is right. I learnt so much from this. Every HIFI enthusiast should subscribe to this channel, thank you Peter.
I have been completely obsessed with sound, diamonds, and cantilevers, cartridges and phono pre amps for the last 24 months, and this video is going to make my obsession much worse, goodbye the next 2 years, and thank you for posting this video .. what an education, makes me feel real good about the MMP3 I just won on e bay.....
Thank you so much for sharing this, Peter! Met you about a decade ago at the NYC Show. Still remember the beguiling sound of your room. You are truly a gift to this hobby
Hello Peter, Thanks so much for producing this video. Very, very informative
As a re-born vinyl enthusiast..I could listen to this guy talk all day. I actually have a broken "Shure" stylus so I might be using his services soon.
Fantastic! Somehow, I love the sound of my Zephyr MIMC star even more now.
Absolutely fascinating. Thanks for uploading.
brilliant video .. thank you Peter..
Fantastic enlightening presentation would love to hear one of his cartridges against my Koetsu and Kiseki.
thanks for the sharing. I would love to find out how to learn to make cartridges. I cant find even a book on the subject. I would even consider relocating to attend classes on the subject. I would be grateful for any info on this subject. I've been disassembling cartridges just to have parts to make my own design, i cant find anyone that even sells pre sized magnets and silver thread wire
Wow, outstanding! Thank you Peter, will look at your other videos. I'm curious what you think of optoelectronic pickups, where a physical stylus and cantilever/mirror assembly modulates a light inside the cartridge body.
Dear Samuel; thank you for your comment and question. As I never comment about others products directly, suffice it to say that less important than the technology used to detect physical modulations in a medium, (Velocity vs. Displacement detection) are the issues mentioned as critical in this talk - moving mass and details of the design that result (or DON'T) in highly resolved tracing of the groove walls. Any technology can be done incorrectly, and the measurements I mention are often critically significant of what has been done right, and what's been implemented incorrectly!
Hi Happy New Year! I just wondered why you have the styli on the end of the cantilever? and not to drill a hole and insert it into the cantilever what's the benefit of this if any, and if making a hole in the cantilever is there any benefit in having slight overhang on the cantilever? at the styli's tip, is more or less better this will change it to pivot point have you done any research in this. And the same for the other end with the iron does the cantilever have extra mass passed the iron is the iron slid over like a sleeve over the cantilevered to change its pivot point which is better more counter balance or less.
Just wondering about the cactus cantilever, is there an issue with it drying over time, what about if it's treated with linseed oil how would this affects it's performance do you no or have treat it with anything or just leave it natural.
Hey Peter, make an extensive video on the exotic stylus shapes.
Now I have new appreciation for my B&O Cartridges.
Hey Peter, I have been curious about one phenomena with HIFI equipment which isnt addressed often in the aspect of how it works and if it really does work.
That thing being "Break in time". Are you able to shed some light and insight on this topic? Is it just a marketing tactic to get consumers used to the sound or is there a clear change over time with cartridges and other electronic parts?
This is a complex subject. I have long said that humans can get used to almost anything, as amply demonstrated by the partners we choose to marry. All kidding aside, some of it is the brain breaking in. As far as cartridges go, Moving Coil designs often ROTATE on their dampers to accommodate alignment of the stylus to the groove walls. This can take varying amounts of time dependent on the design of the MC. Often, MC's rotate OUT of position due to improper skating forces or an accident! Our designs CANNOT ROTATE azimuth, as the generator is bonded to the suspension, so once aligned and set properly they maintain their azimuth, even though improper skating forces are present or even after an accident. Elastomers DO change in cartridges as they break in and age, as can certain styli designs polish and conform on a micro scale, better to the groove. Speaker suspensions DO loosen by degree with break in as well. In electronics, dielectric absorption changes the way capacitors sound, every time they warm up. Other components change over time as well - the list is very long. Switching power supplies and digital amplifiers start degrading the moment they are used and continue degrading. My power amplifier designs are pure analog for that and many other reasons. I DO need to say that hearing changes hour to hour for us all, depending on stress, blood sugar, blood pressure, .............you get the picture. There are times when my system at work sounds very different from other times, and I know it is not the system.
The amp story doesn't add up. High negative feedback, if it can be done whilst keeping capacitative oscillation under control, results in LOW output impedance and LOW distortion...exactly the opposite of what Peter said! Radford was doing this with his sta15 and sta25 designs way back in the 1970s and Radford Revival are still makig those today. Best valve amps in the world by design. Examples like Macintosh, and most other valve amps etc use nowhere near enough feedback so output impedance is relatively high hence damping factor is low and back emf results in loss of control or grip on the speaker so more accurately, frequency response mimics speaker impedance. This, sadly, causes me to question some of Peter's talk. Also the fish and water analogy is wrong as there is no change of energy in refraction. You spear fish by offsetting aim but the energy needed is the same and the position of the fish is the same.
Also, dissing all mc carts is suspect. The advent of tiny tapered boron cantilevers half the length of standard ones together with nude stylii halves the moving mass at the tip which pushes resonance due to reflected energy way up over 50khz so carts like ATs PTGII and oc9xsa are very well engineered and low wear low jitter designs. Nagaoka moving permalloy designs are similarly low resonance low wear low distortion designs.
Interesting talk but there is more than one way to skin a cat and no one company has all the answers.
Thank you Peter very interesting.