zyx universe cartr.- ideal weight -ideal vta ,


Dear analogue friends , i want your assistance to regulate my zyx universe cartr.
I use conquerror tonearm and i would know the ideal tested cartr.weight -actually i tried 1,8 and 1,9 gr with good results, other question is if the arm must be completly parallel to the disk or slightly up for optimum performance.
comaris
While I use the R100H, I find 1.9 about right. Also, until I could secure a spacer, I had to have the tail up a bit. The sound was generally good, but came into its own when I was able to make the arm parallel. Enjoy your ZYX.
Hi Comaris,

I've been using a UNIverse since serial #1 arrived in the US. Welcome to the club!

VTF
Once you're near the VTF sweet spot, a UNIverse will respond quite audibly to changes of .01 or .02g. You must fine tune by ear to get the most from this cartridge, often on a daily basis depending on the weather. If you just pick a number like 1.80 or 1.90 and then set and forget, you'll never hear what the cartridge can do.

Fortunately, finding a UNIverse's VTF sweet spot is pretty simple:
1. Choose a few dynamic, difficult to track passages.
2. Set antiskating to zero.
3. Play the passage and listen for mistracking (slight fuzziness in the HF's just before actual static-like breakup)
4. If you don't hear mistracking, reduce VTF in .05g steps until you do. That VTF is your "mistracking point".
5. Now add a TINY amount of anti-skating. You need far less than the normally expected amount. Use just enough to prevent R channel mistracking on difficult passages. Any more antiskating will smother the life out of the music.

I've had 12 UNIverses in my system. Their individual mistracking points varied but their sweet zones were invariably .02-.04g above their mistracking point. In this they were perfectly consistent.

Once you find YOUR mistracking point, move VTF upward in .01-.02g steps (yes, you must be this exact). You'll hear the HF fuzziness clean up and then the bass will firm up. That's where you should play, at least for today. If you go much higher the HF's will go dull and the music will lose its pace and "jump". Remember, this VTF sweet zone is VERY narrow and it may change tomorrow. Learn what to listen for and you'll get maximum performance and satisfaction from this amazing cartridge.

VTA
Start with the ridge near the bottom of the cartridge body level (don't level the tonearm, that's irrelevant). Adjust by ear from there.

What you're listening for with VTA is the optimum integration of musical fundamentals with harmonics. If VTA is too high the HF overtones will come in "too early". You'll hear the zing of a cymbal almost before you hear the tap. If VTA is too low the HF's will come in too late or be smothered by the decay of the fundamental. The cymbal hit will sound dull or the tap and zing will sound like they came from different instruments.

Hope that helps. Enjoy!
Doug

P.S. If your tonearm doesn't have VTF fine-tuning, get yourself some O-rings that fit the ends stub. Sliding one or more O-rings onto the end stub lets you reduce VTF in .01-.03g increments without moving the counterweight.
Dougdeacon, would this method apply to a R100 Yatra cart...or any cart for that matter?
Tvad,

I'm pretty sure this VTF method would apply to any ZYX. We haven't used a Yatra but it worked for the Airy 2, Airy 3, Atmos and an unreleased model we once previewed for Mehran. None of these is as sensitive/responsive to tiny VTF changes as a UNIverse, but their the sweet zone was always just above the mistracking point.

This method also worked well with a friend's Lyra Olympos, another superbly sensitive cartridge in the UNIverse's class. It worked fairly well with our Shelter 901, a very different cartridge from any ZYX. But it isn't universal, some cartridges have a wide gap between their mistracking point and their sonic sweet zone or are less sensitive to VTF in general. Most inexpensive MM's don't have the resolution to distinguish .01g changes, or even .1g changes.

We discovered this method simply by trial and error. With so many cartridges moving on and off our tonearm the concepts eventually coalesced from all the repetition.

The reason it works is the same reason minimal anti-skating works: some suspensions are so responsive that the minimal amount of downforce AND sideforce consistent with good tracking is all that's needed. Additional external force applied to the cantilever-suspension interface just smothers responsiveness.