Yesterday I finally had installed on my Arvi the Velvet Compass 180s I ordered a while ago. These are the NEW 180s, and it did take some time to special-order a long C from Switzerland.
I'm not sure what to make of these strings yet, and they are still settling in and far from broken in. They are like gut strings in the sense that they stretch a lot when first installed, and -- as of this morning -- they're still stretching. The long C string I was shipped is defective (the winding is loose at the very top), and the vendor and Velvet were great about agreeing to send a replacement right away, but I have the bad one on for now.
Unlike prior Velvet strings, the new Compass 180s do not have "loops" at both ends of the string. They must be tied both at the scroll and tailpiece ends. This makes installation complicated. I'm glad Mike Shank was willing to put these on for me -- I'd hate to have tried myself.
My preliminary impressions are these:
The wider gauge and somewhat "brittle" feel of the metal wrappings are really odd to the touch -- both left hand and under the bow -- after years of playing thin metal strings like the Helicores and Flexocors. It is reminiscent of playing on wound gut, though I haven't touched a gut string since Nixon's first term. That's a challenge, because stopping the string with the fingers of the left hand is different than before, especially with the second and fourth finger -- I really have to take the finger to a different place than with the thinner strings, and the physical cues are different with a wider gauge.
Also, these strings demand to be bowed differently -- they seem to want a lighter, faster bow stroke. If I dig into them, I tend to overbow and get nasty squeaks and squawks.
Also, I don't like the sound of the open G nearly as well as the Flexocor, and the open A is hard for me to bow cleanly -- at least for now. Maybe that's just because these strings are new, or because I'm not used to them.
However, the sound is much bigger than I would have expected, and the tone seems much purer than on the Helicore/Flexocor mixed set I had on before (and which I liked pretty well). My left hand seems to find the true pitch much more naturally on the 180s, probably because I can hear the string pitch better.
You should take a gander at these strings if you get a chance. They're really different. Good or bad, I'm not sure yet. But they're definitely different...