TONEARM DAMPING : DAMPED OR NOT ? ? USELESS ? ? WELCOMED ? ?


Dear friends: This tonearm critical subject sometimes can be controversial for say the least. Some audiophiles swear for non damped tonearms as the FR designs or SAEC or even the SME 3012 that is not very well damped in stock original status.

Some other audiophiles likes good damped tonearms.


In other thread a gentleman posted:


"  If a cartridge is properly matched to the tonearm damping is not required. " and even explained all what we know about the ideal resonance frequency range between tonearm and cartridge ( 8hz to 12hz. ). He refered to this when said: " properly matched to the tonearm ".


In that same thread that a Triplanar tonearm owner posted:


" This is the one thing about the Triplanar that I don't like. I never use the damping trough...... I imagine someone might have a use for it; I removed the troughs on my Triplanars; its nice to imagine that it sounds better for doing so. "


At the other side here it's a very well damped tonearm:


https://audiotraveler.wordpress.com/tag/townshend/


Now, after the LP is in the spining TT platter ( everything the same, including well matched cartridge/tonearm.  ) the must critical issue is what happens once the cartridge stylus tip hits/track the LP grooves modulations.

The ideal is that those groove modulations can pass to the cartridge motor with out any additional kind of developed resonances/vibrations and that the transducer makes its job mantaining the delicated and sensible signal integrity that comes in those recorded groove modulations.

 That is the ideal and could be utopic because all over the process/trip of the cartridge signal between the stylus tip ride and the output at the tonearm cable the signal suffers degradation (  resonances/vibrations/feedback ) mainly developed through all that " long trip " .


So, DAMPING IS NEED IT AT THE TONEARM/HEADSHELL SIDE OR NOT?


I'm trying to find out the " true " about and not looking if what we like it or not like it is rigth or not but what should be about and why of that " should be ".


I invite all of you analog lovers audiophiles to share your points of view in this critical analog audio subject. WHAT DO YOU THINK ABOUT?


Thank's in advance.



Regards and enjoy the MUSIC NOT DISTORTIONS,
R.






Ag insider logo xs@2xrauliruegas
Dear @millercarbon  and friends : " Of course they need to be damped. The question is in what way? And how much? "

Totally in agreement. Yes, one way or other tonearms must be damped.

 As a fact any analog rig item and the whole room/system needs always some kind of damping even electronics at its circuit boards passive and active parts, same for loudspeakers but at the analog rig and due that is almost a mechanical " system " the damping down there is need it no matters what.

Room/systems can't avoid its ( any kind. ) developed resonances/vibrations that per sé always degrades the audio signal.

Resonances/vibrations is the true DEVIL that impedes to have better quality level listening experiences in any room/audio system and we can't avoid/disappears totally, the only alternative is to lower the levels of those resonances/frequencies and this can be achieved using different dampening solutions.

In what way? ( example in room ): acoustic treatment as bass traps, acoustic panels and difussors.

How much?, this is a really hard to say/answer because depends on many factors.

 It's not only the need or not to damp the tonearm but to take in count that tonearm is part of the analog rig because is mounted/attached to a TT that is seated ( normally ) in a damped plattform but some times it's not over that kind of plattforms and things about goes with higher resonances/vibrations developed around it.

I think that we need to analize the complete analog rig to decide that " how much ".

 The TT it self is a resonance/vibration source always through its motor, plinth, platter, bearing and arm board.

 One way or the other we need to take care that the whole TT be good damped and after that we can focus in the cartridge/tonearm damping and here exist variables that we have to take in count to define the damping issue: we need to own a good platter mat, A PLATTER/lp CLAMP, TO KNOW THE CARTRIDGE SELF TRACKING HABILITIES ( NOT ONLY ITS COMPLIANCE ), cartridge/tonearm resonance frequency, how good is damped the cartridge it self ( example the AT ART1 has a titanium body and has a rubber body cover at the below plate. ),   obviously how well is damped the tonearm design and how good is the tonearm bearing and if it's an unipivot desing or gimball type or LT, how many play hours has the cartridge stylus tip, SPL usually we listen the LPs.

All those " characteristics " and several others ( like an accurated cartridge/tonearm alignment set up. ) will condition what we can do about and that through several controled listening tests can confirm that " how much " and where.

As we can see not an easy task and our music/sound trained ears levels and room/siytem resolution will have the final decision with each cartridge/tonearm combination.

Regards and enjoy the MUSIC NOT DISTORTIONS,
R.
“What’s the frequency Kenneth? “... fix a low frequency problem another way = agree

fix ( lower amplitude ) any other resonant issue always...

Triplaner owner, really 2 bad the owner the OP quotes never listened to damping... that missed opportunity was free! In my setup on a Brinkmann Bardo w Lyra Delos on an HRS base just a whisker of damping is better by my ears anyway..... the damping comes in a syringe.... in and out / more or less both work....
Also while related, bearing chatter and total friction are not the same animal.
@rauliruegas  I use the two Jelco 850 arms which are not damped. In fact I also ran the 750 without oil.
lewm, yes, damping will broaden and lower the resonance peak which is why you want to use it in the situation where a tonearm is too heavy for the cartridge. BUT, if the tonearm is properly tuned to between 8 and 12 Hz you don't need it at all. Why? SIMPLE, nothing happens there. Warp frequencies are below. Rumble and record noise are above. There is nothing there to excite it. Don't forget that the suspension of cartridges has a certain amount of damping built in. They don't just keep bouncing around. The only time I have ever seen damping in a very useful application was with an air bearing straight line tracker. It definitely decreased the amount of lateral cantilever movement during play. Because these arms have a very high horizontal mass the horizontal resonance frequency can be very low resulting in horizontal cantilever wobble which you can easily see. There is no question that damping quieted this down but, I would still never buy the arm. Don't like crutches.