SME 20/2 SME V or Triplanar VII?


I'm in the process of acquiring an SME 20/2 and I would like to know others' thoughts and experiences with deciding whether to arm it with the SME V or the Triplanar VII.
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Showing 7 responses by dougdeacon

Another vote for the TriPlanar. As Nsgarch said, today's top cartridges respond to very precise adjustments in every parameter. Few arms can match the TriPlanar in its ability to optimize every aspect of setup. The better and more resolving the system, the more this will matter.

Gregadd is right that VTA-on-the-fly can compromise rigidity, but of course every tonearm is a bundle of compromises. The question for each of us is, "Which of the available compromises will have the fewest and smallest sonic negatives for me?"

The TriPlanar's potential lack of rigidity does not translate into any significant loss of dynamics or bass as far as I can tell. Its microdynamics and speed are better than any other arm we've heard. Before we chose the TriPlanar we demoed the Basis Vector, Graham 2.2, all three Schroeders and the SME V.

The SME V lacks easy, repeatable height adjustment. Since this adjustment varies with each record it must be set by listening. Having to cue the arm up and down while trying to find the right setting wouldn't work for me. Nor would I want an arm where I couldn't instantly return to a height known to be good for a particular LP. YMMV of course. If you don't easily hear the differences that VTA/SRA make, this won't matter much to you.

The SME V also lacks azimuth adjustment. This would be another non-starter for me. Cartridges are never perfect. Fine tuning azimuth for a cartridge is essential for achieving good stereo separation.

IIRC, the SME also lacks any real ability to adjust cartridge alignment angle. Again, cartridges aren't always perfect. Headshell holes instead of slots confer no sonic advantage, but they do make aligning an imperfect cartridge difficult or impossible.

The suggestion that an SME V might be more synergistic with an SME table sounds plausible, but what exactly does that mean? The only thing an armboard and plinth can do for a tonearm is provide a pathway for draining resonances. If the arm's design is such that few resonances reach the mounting plate, then this pathway is of little use. Perhaps the SME's one-piece armtube needs such a pathway. But the TriPlanar's armtube is thrice-decoupled from the mounting plate. Once by the azimuth yoke, once by the bearing tube yoke and once by the VTA tower. Resonances from the arm simply won't reach the armboard, so what "synergy" is there?

I'm not sure why Raul thinks a VTA mechanism needs a remote control to be useful. Mine works just fine, and I don't have to stop listening to music to use it! :-)

Thomasheisig's suggestion of the DaVinci was intriguing. I've never seen one, but the photos look very interesting.
Raul,

Excellent question/suggestion re: arm/cartridge matching. We should have asked that earlier.

Jtimothya,

Thanks for the update on the SME Vd with azimuth-adjustable headshell. That seems like an excellent solution, which I was unaware of. (The two SME V's I am familiar with, from friend's systems, do not have this.)

Drilling out the headshell holes (by hand) is a reasonable accommodation, though I'd prefer to use a hole-sized bit and expand them *only* longitudinally and not laterally. If TriPlanar owners can fiddle with sandpaper and O-rings (per my "Tips" thread) I don't know why SME owners can't fiddle with a drill bit!

Perfect sound forever, anyone? ;-)

P.S. SirSpeedy is right about the "free" feeling of the TP while hand cueing. It feels like I imagine how zero G would feel. There's so little resistance in any direction it's kind of scary at first.
Tim summarized the synergy topic nicely and Flyingred provided some excellent details. (See, no flames!)

SirSpeedy,
Give us details and a name and address. We'll all post letters to Rowland, inquiring about power supply upgrades. Maybe that will get them moving! We were without a playable rig for 5 months and Dan_Ed has been without one even longer. It ain't fun.

Ed,
Hearing different gear is VERY helpful. Chatting like this can be, but nothing substitutes for carefully considered listening experiences. Your insane plan makes perfect sense to me.
SirSkimpy,

We're all easily distracted by "fairly asses", especially if they're "sporting analog threads".

Analog threads follow natural waveforms more realistically, as I'm sure you appreciate.
SirSpeedy,

Why not just buy a used amp, here or on ebay, then sell it when the Rowland comes back? It would probably net out at virtually zero cost.
Dgad,

The very low impedance values Thom is discussing assume the use of stepup transformers. When I used stepups I also used sub-100 ohm values, and found that great precision was necessary to optimize the performance of any LOMC.

FWIW, our new high gain phono stage + the .24mv UNIverse are happiest somewhere around 150-225 ohms. If I go any lower it sounds exactly as you described, closed in or muffled. Cello's Supratek Grange + UNIverse sounded best around 100-125 ohms, IIRC.

Assuming your phono stage doesn't include stepups, you might be fine at either 100 or 200. If those aren't optimal I'd bet on something in between.
Thom's right about dual paralleled resistors, which I did use extensively with my stepups. The math is easy though.

Dgad,

My MC phono stage is also solid state, so those numbers should put you in the same ballpark as me. (One possible difference is the native input impedance on the inputs. Mine is around 1500 ohms without any resistors, FWIW.)

If you're referring to break-in on the UNIverse, my experience (with four of them) is that they made most of their progress in the first 5-10 hours and changed very little after 20-25. They were bass- and dynamics-shy OOTB, but they opened up and then stabilized very quickly.

No other cartridge I've had broke in so quickly and easily. The Airy 2 needed 75+ hours to open up. OTOH, the Airy 3 needed 150+ hours to calm down. The Shelter 901 needed 300 hours before it stopped sounding like nails on a blackboard.

If you're asking about break-in on the resistors I have no idea. Considering the levels involved, it's probably decades!