Teach me about cartridge 'retipping'


Thought I would throw this out there for comment by long time vinyl aficionados...

We all have cartridges we love, some are pricey treasures... but they wear out eventually even with much care and diligence in use.

There are still some good folks with excellent reputations doing retip services of various makes - Peter at SS, Andy Kim in WA, Steve Leung in NJ etc etc... not to mention some of the manufacturers of course, who still do them. It would seem to me these old craftsmen may or may not be passing along these valuable skills to younger apprentices.

I have bought a couple Grace F9 retips from Peter Ledermann - they work wonderfully. No longer having a fresh factory F9L I will never know whether they sound different.  But they sound great.

Curious to hear comments about how these retips are done, and whether they can reliably reproduce the original sound signature of the cartridge. I wonder, for instance, about how the cantilever is removed and reinstalled, relative to the suspension of the original cartridge, etc etc.  Is the suspension replaced?  What is a suspension comprised of, for example, in a typical higher end MC cart like a Dynavector a Lyra a VDH...

Of course, as time passes, the original cartridges age and I can imagine suspensions in them eventually get compromised as well...
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Speakers can be upgraded with different parts. Amplifiers, CD players, phono stages, turntables, tone arms- even speaker cables, power cords and interconnects can be upgraded in the aftermarket. Only phono cartridges cannot. 

I do have one question though: is ANYTHING the answer to all questions?
One can also re-tip by buying pre-made assemblies, from Adamant Namiki.

I get your point, though (chakster).
The nude mounted styli on our cartridges is a namiki aluminum unit. (elliptical, shibata, or micro-ridge. Micro-ridge being akin to micro-line)
As the owner of many vintage cartridges I must say that compliance is measurable with Hi-Fi News TEST LP. Based on my experience with more than 60 cartridges I can say that a high compliance is always a high compliance and a low compliance always a low compliance.

Stiff suspension is a myth, softened suspension is a common problem for some well know cartridges, just don’t buy them and you’re fine.

I think Lewm is not a hunter for vintage cartridges even if he has some at his vaults.
SoundSmith Grace stylus has advanced stylus profile, the original is elliptical.

But when you will try an original Grace with original MicroRidge you will not find anything better than this.

Grace offered MR styli in the 80’s with F14 and LEVEL II cartridges, your F9 is from the 70’s.

Grace upgraded the whole line of cartridges in the 80’s - they are the best from Grace.

For a person who think that every vintage cartridge must be rebuild because of that myth (about suspension) my advice to pass on it and stick to the new cartridges. Very simple.

People are buying top vintage cartridges not because they want them to be rebuild by someone with new parts. Buying many different samples of the same vintage cart is the best test, after purchasing many samples of the same model you can judge about the quality of this model. If you can’t do it yourself you’d better ask those who purchased many and tested many. A top vintage cartridge is valuable ONLY when it’s perfect. Some people sell junk, don’t buy from them. Audiophiles (not dealers) is the best source for used cartridges in best condition, they you will get exactly what you paid for (not a junk sample with dead suspension).

New cartridges can have many more problems than an old ones!
Suspension collapse quickly even on $5000 LOMC made today (if you think all new is better then how can you explain that?)  

My advice: NEVER BUY RE-TIPPED CARTRIDGES! (exception is a factory retip/rebuild by the manufacturer).
Always search for the original sample even if it will cost more. Only an average cartridge can be upgraded with different cantilever/stylus, a perfect cartridge can only be downgraded with different parts coming from a third-party vendor. 

P.S. SoundSmith cartridges is not the answer to all questions, they are not the best in the world, some of them in the new line are so ugly (sorry, previous design was aesthetically much better in my opinion).  




@lewm

sorry to have you repeat old hat, i should probably have done a search through a-gon archives before posting

it was this listing that made me wonder... i have loved the sound of my dyna's... saw this... thus the query

https://www.usaudiomart.com/details/649667301-dynavector-xv-1s-retipped-w-0-hours-free-ship-no-fees/

much appreciate the replies

@millercarbon

i will look at all the good stuff from peter ledermann you highlighted, thank you
This subject has been done so many times it is now flat as a pancake.  There are undeniable facts: If you have an original vintage cartridge, the suspension is old.  That per se may affect compliance and sound quality.  If it is NOS (never ever been used), then in my opinion it is even more likely that the suspension will be problematic.  Not to say it won't work and sound very very good, only to say that you cannot know how it sounded originally.  So, why the big fuss about re-tipping?  If you re-tip, don't expect original sound quality unless you go through the manufacturer, who usually will just be giving you a replacement new cartridge, for big bucks if MC type.  If you use an aftermarket re-tipper, then what you've got might sound wonderful but probably not like the original, and so what, if you are otherwise pleased?  Case in point, I own both an original Grace Ruby (sapphire cantilever/elliptical stylus) and a second one that was re-tipped by SS with their sapphire cantilever and OCL stylus.  I have often listened to them both in sequential order.  The SS re-tip version sounds better but not like the original.  I am happy either way but I use the SS re-tipped version much more often.  You can't have your cake and eat it too.  You can't go home again. What's past is prologue.  Etc.
I have bought a couple Grace F9 retips from Peter Ledermann - they work wonderfully. 

Your actual experience then is quite good. Yet we have pictures trying to create the impression that because there's a lot of glue it must be a sloppy job. At least that seems to be the impression. Always hard to tell with innuendo. 

Ledermann has a whole career built on developing and improving phono cartridges. If you want to learn about cartridges you could do worse than to watch the videos he has up on Soundsmith and YT.

Here for example is a fascinating discussion of jitter, (vibration and resonance in all the different parts of a cartridge) https://www.youtube.com/watch?v=WmwnN_T_wW8 Just the first few minutes should be enough to understand anyone posting pictures of glue is probably missing the big picture. Tracking a record groove sets in motion a complex pattern of vibrations in every part of the cartridge. The first point of vibration is the stylus itself. One might think its the stylus/cantilever attachment point. That seems to be the reason for the pictures. If so its misleading.

The stylus itself is very small but the tip of the stylus, the actual contact area, is microscopic. The stylus itself is bound to vibrate. The better the stylus is supported above the contact point the less of the stylus there is to wobble and flex around.

Now look at those photo's again. It would be super easy to put a blob of glue on there and stick the stylus into it. If that's what it was I'd be appalled. But instead what we see is glue perfectly applied in a smooth curve from as low on the stylus as it can go to as far out on the cantilever.  https://www.sound-smith.com/sites/default/files/BO-CL1a.jpg
This can't be by accident. Can't prove it, but watch a lot of Ledermann, try and tell yourself this was an accident. Try and tell yourself its anything other than Ledermann building a bunch of these things and figuring out by trial and error this is better than OEM.

Compare that now to OEM. https://scontent-arn2-1.xx.fbcdn.net/v/t1.0-9/119490585_4737129112971885_4613339876402529386_o.jpg?_... Notice that not only is the stylus itself not supported very close to the contact area, but the whole thing is projecting out much further from the cantilever. That's a big drawback, because the further it projects out the more mechanical leverage it has to put torque into the cantilever.

This would explain why your experience was, "They work wonderfully".

Watch a bunch of his videos. There's a lot to learn.

If you're impatient, or just want a terrific teaser how good his jitter video is
https://youtu.be/WmwnN_T_wW8?t=1220
All you need to know, explained well by Jonathan Carr (Lyra) on this forum long time ago, I will just copy paste here again: 

  "Changing only the stylus will alter the sound less than if the cantilever material is changed. When a cartridge is designed, the designer will consider the moving mass (sum of the stylus, cantilever and coils), the resonant character of the cantilever, and the (sonic) propagation velocity of the cantilever (affected by the cantilever's mass and rigidity), then choose the suspension and dampers accordingly. If you change the cantilever material, you are effectively throwing the original designer's calculations away. There is much more (far more than what I have written above) to rebuilding a cartridge than affixing a new stylus or altering the cantilever. In over 30 years of involvement in the phono cartridge industry, I have not seen one retipper who has presented the entire story, who has effectively said "Here are the all of the considerations. Here are the cons as well as the pros. Make a wise choice that is best for you" ... " (J.Carr, 2013)
fair points and perspectives so far - thank you

i should have been more precise to distinguish a retip from a rebuild... the difference is of course meaningful, thanks for pointing that out chak...

appreciate other comments that more experienced folks than me may have - am sure lewm, raul, mc and many others will chime in before long
Remember Technics best cartridges, this is one of mine under macro lens. Technics made the lowest possible moving mass MM cartridge (Boron Pipe cantilever). See why it’s better.

According to this Technics research:

"Somewhere in the high frequencies, every cartridge has an undesirable resonance point. Undesirable because there the frequency response curve climbs a sudden peak. If that peak is in the audible range, your records sound not as intended. That resonance frequency is determined by the total effective moving mass of the vibrating system - the summed masses of the diamond stylus and, most importantly, the cantilever and magnet, etc. To shift that harmful resonance frequency up into the high supersonics, the effective moving mass must be reduced to the lowest possible minimum. Also, too much effective moving mass increases the mechanical impedance, thereby negatively affecting the cartridge’s tracing ability."

Retippers can’t do anything like that, they don’t even have an access to those cantilevers, they are not available today (boron pipe, beryllium). What they can do is to buy what’s available and install it. Or they can glue a new tip on old cantilever, but glue will add mass etc. Re-tip or rebuild is a compromise, most likely degradation of the very special cartridge (if you have a very special one). This is why a very special cartridges must be shipped back to the manufacturer for rebuild or upgrade with a new one.  


Could you explain why do you need a retip of MM cartridge if you can buy NOS Grace stylus, even F14 (RS14) which is huge upgrade over F9 (RS9) of any kind, the RS14 styli from Grace can be Boron/MicroRidge, Sapphire, Ruby and even Ceramic cantilever. Grace made Aluminum with MicroRidge too. This is the best diamond profile you can get, life span can be 2000 hrs! They are rare, but well worth the investment, I collect all Grace styli. Never re-tipped any of my Grace cartridges (I have many of them). SoundSmith actually rebuild Grace, it’s not a re-tip, he can install whole new cantilever with stylus tip. Re-tip is just a tiny diamond replacement on a cantilever using glue. This is original Grace Ruby, try to find any glue (more here). This is SoundSmith Ruby with glue (more here).

The situation with MC cartridges is another story, you’d better read what cartridge designers think about third party re-tip if you want to know the truth, find Jonathan Carr’s comment on this forum.

Re-tippers will always accept any cartridge for re-tip, this is their job and you will pay for it (very high price). On the other had we have people who have no idea what they are doing and always comment that re-tip is better than the original, at the same time you will find tons of re-tipped MC cartridges on ebay with less than 50 hrs on it (why people are selling them? Think about it).

Here is a typical example of SoundSmith glued stylus tip on Boron Rod cantilever (image from his site again).
And this is a factory job, nude diamond on boron rod cantilever (image under my macro lens).

What re-tippers can’t get today is Boron Pipe cantilevers (just one example), they can’t mount their styli like this. Do you see any glue? This is super riggid and super light mass construction (hollow boron pipe and stylus mounted through the laser etched hole). This is how top of the line MM or MC were made in the golden era of analog (not today). I could add more different images I made myself, but I think it’s enough to understand what I mean. Here is the side view on Boron Pipe cantilever with Nude Diamond. Like Grace it is a high compliance MM (SONY). Same Boron Pipe cantilever you can find on the best Grace models. Extremely low moving mass! Another example is Beryllium (Victor X1II), just look at this



MC cartridges have a wire that extends from the back of the cantilever through the coil. The wire is pulled through a rubber damping ring then through a hole in the rear pole that has a set screw to lock the wire. As the wire is pulled tight the coil compresses the rubber. The tension on the wire is critical as this determines the compliance of the suspension. 

I would only get a factory rebuild. Some companies like Elusive Disc will give you a new cartridge for a rebuild price. They send the used cartridge back to the factory. It costs a little more but you get a new cartridge right away.