Tonearm for Teres turntable - approx $1000 - ??

I hate math!! :-) Anyway, the Zyx R100H compliance is listed as 15 x 1.6 cm/dyne (horizontal)/12 x 10.6 cm/dyne (vertical) How do I plug that into the formula (rf = 159 / sqrt ((eff. mass + cart weight + fastener weight) * (compliance)) ???

I may email you for assistance, Twl!

Also, anyone know where the Morch DP6 tonearms can be purchased? Music Direct sells them for the $1500 price I spoke about above, though you have to call them as they don't sell it on line. Just wondering if it could be found a little bit cheaper elsewhere! (Wish Chris of Teres sold them, but he only sells the Tier 1 tonearms he recommends on his site; the Morch is listed as a Tier 2. :-( )

With an 11.5gram effective mass tonearm, I get around 10Hz as your calculated resonant frequency in the horizontal plane, and 11.2Hz in the vertical plane, using your listed formula. 10Hz horizontal and 11Hz vertical is just fine. The actual measured frequency on your turntable may vary some from the predicted, but it should be fairly close.

The OL Silver MkII is about 11.5 grams

You may note that the cm/dyne rating is also known as compliance units(cu).

As you can see, this is a combination of a medium-high tonearm effective mass(11.5g-the higher end of medium), and a medium-low cartridge compliance(with 12vert. being in the lower end of medium compliance, and 15horiz. being in the medium). It fits nicely into the general categories that I presented in my earlier post.

However, with the light cartridge mass of 4.2 grams, the counterweight may have trouble achieving counterbalance, so the the supplied ZYX headshell weight may need to be used, and this will change the calculation, but even a 4g headshell weight increase will still yield results in the similar area of mass/resonance, and certainly still be in the target frequency range.

With a cartridge like the ZYX, you may choose from either a quality gimbal-bearing arm like the OL, or a quality unipivot tonearm with sufficient mass(around 11g).

Both Morch arms, up4 and dp6, have replaceable arm wands. They also come in both 9" and 12" wand lengths. If you contact Morch or an authorized rep they should be able to provide you with a list of popular cartridges and the recommended wand. The DP6 would be my fist choice, too, as I just don't much like handling a unipivot; it makes me nervous when it twists around while I am lowering the thing onto the record.

They come with wiring is my understanding but there are several options for more money. Biggest problem I have with the Morch and any other unit with detachable wands is all of the wiring joints. There is a break from the cartridge to the wire and then another break where the wand joins the tonearm assembly and yet another break where the DIN plug attaches to the bottom of the tonearm mount.

An arm with a seamless wire is the best option for the cleanest sound. Incognito and Audio Note offer such wiring (others might, too) for the Rega RBxxx arms. Biggest problem with the one piece wire scheme is most of the phono cables are 1 metre. This means you have to have your table pretty close to your phono preamp or you must use RCA couplers and an extension cable (yet another set of connections).

The Audio Note arms based on the Rega RBxxx arms are the ARM1 and ARM2. The ARM1 is the rb250 with audio note pure copper wire and is seamless from cartridge clip to the RCA termination. The ARM2 is the rb300 with audio note pure silver wire and seamless, too. There is also an ARM3 which is also a RB300 with even better silver wire.

The ARM2 with a Michell Technoweight (or Kerry heavyweight; several good ones out there) is an excellent arm for under 800 inc the weight. I believe Audio Note retails the arm for 600.

Well, I'm still trying to make a decision - the Morch DP6 seems as if it would be a good match with the Zyx cartridge and Teres turntable (thanks for calculating the complaiance range for me, Twl!)

Your description of a unipivot tonearm makes me a bit nervous, too, C123666, but....Just found another unipivot that intrigues me, the Bluenote Borromeo tonearm. I can't find anything about its weight or compliance, though it is listed as having a "medium-high" mass. Anyone have experience with this tonearm?

If you are comfortable with a unipivot I urge you to check out the Scheu Classic II unipivot arm. It can be had for around 500 to 600 direct from Scheu in Germany. It is sold by Audio Advancements under the name "Belcanto". It is a good arm and reasonably priced. I am probably going to order a 12" versioin with a new Scheu Premier Mk II table pretty soon as that seems to be the best deal in town (table/arm inc shipping for 2495 US).