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TriPlanar Tips

The manual that comes with the TriPlanar Mk VII tonearm is fairly complete, but there are a few things I’ve learned only by living with the arm. Note: I do not know which if any of these would apply to previous versions of the arm. My only experience is with the Mk VII.

1. NEVER raise the cueing lever while the arm is locked in the arm rest. This pressures the damping cylinder and could cause a silicone leak. For this reason and also for safety, whenever the arm is in the arm rest the cueing lever should be DOWN. This is backwards from most arms and takes some getting used to.

2. If your Tri-Planar doesn't cue straight down there's a quick fix, which may be included on some new arms. The problem is insufficient friction between the arm tube and the hard rubber cueing support bar. Just glue a bit of thin sandpaper to the underside of the arm tube. Make it big enough and position it so it hits the cueing support bar at all points across the arm’s arc. (Note: after doing this you will need to adjust the cueing height, see Tip #3.)

3. When adjusting cueing height (instructions are in the manual) always do so with the arm in the UP position. This adjustment is VERY touchy, since the cueing support bar is so close to the pivot. Be patient and be careful of your cartridge. (Note: after doing this you may need to adjust the anti-skate initiation point, see Tip #4.)

Chris Brady of Teres told me of a way to improve cueing even more by re-shaping the cueing support. Moving the cueing support point farther from the pivot improves its mechanical advantage and makes the cueing height and speed adjustments less touchy. This mod is easier than it sounds and requires only a length of coat hanger (!), but I don’t have pix and haven’t yet done it myself.

4. Changing the cueing height affects the point where anti-skate kicks in. (Yes, it's weird.) Once cueing height is satisfactory, adjust the short pin that sticks out of the front of the cueing frame. That pin controls where the anti-skate dogleg first engages the knot on the string.

5. The Tri-Planar comes with three counterweight donuts of differing masses. Many cartridges can be balanced using either of two. The arm usually tracks best with the heaviest donut that will work, mounted closer to the pivot. Of course this also reduces effective mass, which may or may not be sonically desirable depending on the cartridge. It also leaves more room for Tip #6.

6. For fine VTF adjustments don’t futz with the counterweight, there’s an easier way. Set the counterweight for the highest VTF you think you’ll need (ie, close to the pivot). Pick up some 1/4" I.D. O-rings from Home Depot. To reduce VTF a bit just slip an O-ring or two on the end stub. Thin O-rings reduce VTF by .01-.02g, thick ones by .04-.05g. Quick, cheap, effective. (For safety, always lock the arm down while adding or removing O-rings.)

7. When adjusting VTA, always bring the pointer to the setting you want by turning it counter-clockwise at least ¼ of a turn. This brings the arm UP to the spot you've selected, which takes up the slop in the threads. You can easily feel this happening.

Hope someone finds these useful. If you know any more, please bring ‘em on!
dougdeacon
paperw8
165 posts
 

08-22-10: Dougdeacon
the publication of suggestion #6 here is what inspired Tri-Mai to add that small, threaded VTF weight. You apparently got one and your gratitude is duly noted!
The fact of the matter is that I do appreciate that you contributed to improving the tonearm. I only got my tonearm a couple of months ago, so I didn't know the history of it all.

As to your other comment:

As for theoretical arguments that the damping trough is quite rigid and "shouldn't" need to be removed, I'll refer you to the dozens of owners who've actually tried it. Not one has failed to hear improvements such as I described.

Whether you choose to try it yourself or not is up to you of course, but theoretical objections won't convince anyone who's actually heard the difference.
I tried to make clear that it is not my business to tell people that they aren't hearing what they say they are hearing. My inquiry tends to focus on whether I can make sense of what other people are saying; things that make sense to me are more persuasive than things that don't make sense to me. I must say that the fact that other people say that they can "hear the difference" is not particularly persuasive because you always have to watch out for the "emperor's new clothes" phenomenon in which one person says something, and then other people possibly convincing themselves that it is true because they saw it in writing somewhere. The reason for my skepticism is that in this forum, I have read incorrect statements made by people who assert the authority of the statements on the basis that others had written the same thing, or that they saw it in a wikipedia entry, and so forth. While the Internet is a good source of information, one of the problems with the Internet is that incorrect information can get propagated, and then acquire a certain measure of authority by the mere fact that it was repeated.
lewm
12,610 posts
 
I kind of agree with paperw8. If the damping trough is securely fastened, then it is in effect a part of the overall mass of the tonearm. The totality of the tonearm almost certainly has a resonant frequency, so removing the damping trough could only alter that frequency, as the act of removing the trough has altered the mass of the tonearm. Since the damping trough is such a small fraction of the overall mass of the tonearm, one would expect that its effect on the resonant frequency is small. Maybe it goes up a few Hz because the mass has been slightly reduced. However, if the damping trough were loose and could therefore resonate independently, then removing it would only be a good thing, because by itself the trough would resonate at a high-ish frequency. The frequently reported improvement in sound related to removing the trough could also be due to the fact that the arm may sound better without any damping applied. If you're not going to use damping fluid, you may as well remove the trough. Then there is also the "Emporer's new clothes" effect, mentioned by Pw8.

As regards that added way of fine adjusting VTF in the Ultimate version, isn't it interesting that the rear end of the arm has a threaded hole, even on very old arms like mine? Seems maybe Herb Papier was thinking about a threaded weight 20 years ago.
syntax's avatar
syntax
2,193 posts
 
Dougs recommendation to "improve" the Triplanar are spot on. It is a good design from scratch which survived a long time. But honestly, the main problem from the Triplanar is, it has no weight. It looks solid, but it isn't. This is the main reason why this Arm works super - or best - with cartridges which do not reflect much energy into it, or which are not heavy. Its own energy transfer reaches the limit based on this. I think, the actual copy, the Talea, solved this. IMO, without listening to it.
dan_ed
2,451 posts
 
Paperw8, I would advise you to stop tapping and start listening. Your test, by the way, does not tell you anything about resonances during playback and that is what is important. (I'd like to find the first guy who ever started this "tapping" argument and punch him in the mouth. It proves nothing.) We don't know what your system is but I believe it is you who needs to spend time listening to your new TP to get to know it better with respect to your system and what ever cartridge you are using. If you don't hear improvements by following the advice offered hear, that's ok, but don't assume that those of us who find good improvement by reducing some of the resonant parts are hypnotized or sipping kool-aid.

If you can get up to New England I'd be glad to show just what the TP sounds like, with and without these parts installed.

Syntax, it can be said the Talea is similar to several other arms if we only take looks into account. You are correct that the Talea has surpassed the TP, and I agree with your assessment of the TP.

disclaimer, Talea dealer and TP owner
atmasphere's avatar
atmasphere
11,662 posts
 
The Triplanar has a extensional damping material on the arm tube to reduce mid and high frequency resonance artifacts. This is one of the reasons this arm is so neutral- most arm manufacturers do little to address this issue.
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