Eminent Technology ET-2 Tonearm Owners

Thanks for the PM Tim - as it alerted me to the thread. Guys, I have been away and am in the middle of moving house. My gear is being consolidated into one large room. I have decisions to make regarding speakers. 8^0

Hello Pegasus and welcome to the thread Stu and DJspinner.

Djspinner - I have my doubts that you are going to use your new kit for DJ work 8^0

Congrats on the ET 2. The ET 2 design allows for "any" cartridge to be used by swapping out armtubes and I Beam leaf springs. Also with its patented worm gear VTA system, does not change VTF when you raise and lower VTA. All other tonearms regardless of design change VTF when you adjust VTA. Someone name another? This makes the ET2 still IMO one of the most advanced tonearms on the planet, and from my personal experiences the most advanced.
Your choices DJspinner.

AT VM-540ML
40 x 10-6 cm/dyne
AT VM-740ML
40 x 10-6 cm/dyne
Nagaoka MP-150
18 x 10-6 cm/dyne
Grado Opus3
Compliance: 20μm/mN
Denon 103R
5 x 10-6 cm/dyne
Hanna E
17 x10-6cm dyne

As a general guideline in the numbers above. the higher the first number, stick to the aluminum armtube. As you go lower (15-20) consider getting the Carbon Fiber or Magnesium Armtubes from Bruce Thigpen. Definitely get Bruce to send you the new longer I Beam with double leaf springs. This longer I Beam eliminates half the counterweight needed and this increases vertical inertia. From my experience the double leaf spring works better with all cartridges except those with the highest compliance. So we are trying to (for those looking to better the sound) match the better armtube and leaf spring to the cartridge compliance. You will hear the difference if that is your pursuit.

This compliance word that we keep hearing about, I simply refer to how springy and soft/hard the suspension of cartridge is - that holds the cantilever/stylus in place. The softer/springier the suspension the higher the first number. I think of Cars that come with buttons now that change the suspension from soft (cushy ride) to hard (sporty). Those that are fans of vintage carts.....that suspension has hardened over the years lowering the compliance.
We can still get music from a cartridge that is not matched to the better suited ET2 armtube/leafspring setup. It just won’t sound as good as what you can get from a well-matched combination. These types of choices that change "real mechanical aspects", are part of what makes IMO, this analog hobby so much more interesting and involving than digital.

Can there be a better hobby during a lockdown ?
unless you are moving house....

Stay safe, stay well.

So you would advise against me lugging around two 45 pound SOTAs to a DJ gig?  Ha!

I do love fine tuning the VTA while playing records, but it takes a very steady hand, given my springy table suspension system.

Thanks for the detailed explanation on compliance.  I'll probably stick with the current I-Beam length. It looks like the previous owner may have cut the I-Beam shorter (to the 6 mark) in order to allow the dust cover to close properly.  The threaded rod that holds the lead weights in place has to point inward to avoid sticking out as well.

Given the range of cartridge options out there, I'd like to try to match the cart with the tonearm setup as it stands, especially given the range of quality cartridge options. Once I get more comfortable with the table adjustments and possible modifications, then I may revisit.

So given those factors, a cartridge with a compliance number higher than 20 should pair best with my current tonearm setup?

Hi all & Dj...
Just my thoughts: Your selection of cartridges is tasteful, even mouthwatering...
Generally there is only one sort of cartridges I'd rather stay away except for a wish to abuse time, like to teaching a rhinoceros to dance. This is the combination of high horizontal compliance with low damping. This means Deccas, maybe the DJ Decca (double tie-back string) mightwork - this would be highly interesting. (It's worth the hassle, but...)
Myhigh compliance B&O MMC1 (root of the Soundsmiths) works *superbly* even if it shouldn't. This is because it's  "well behaved" = damped.
The new ATs are higly interesting - I'd look maybe more for the 500 series and a Shibata tip. I read a careful review in a german journal where they hinted at a slightly more upbeat character of these vs. the more refined (aka. slightly over-civilized) 700 series. (There are technical reasons for that). They play in the league of the Ortofon Black.
The Nagaoka I don't know, the Grado might be less damped (mechanically) and a bit more characterful=" musical !!!".
The Denon and Hana seem to be winners. Specially the Denon but maybe the Hana too will profit from a 5g brass "shim" between headshell and cartridge. This worked wonders with a DL 103 in a friends Thales Simplicity arm. There are IMO no reasons to expect different on the ET2.
The lower compliance of these two MCs will make setup somehow easier specially on a springed subchassis turntable.

BTW - constant VTF isnt’t the issue of the arc-block for VTA adjustment. It is the constant (zero) overhang with different VTAs.
Increasing VTA by increasing the height of the pillar of a radial arm, the arm shortens in the horizontal plane. Thus overhang is reduced:... by 0.5 mm for a 9" arm with a change in VTA of 3.8 degrees... which IMO is close to academical... :-)
The VTF varies with height if the counterweight is "underhung" or "overhung". Ie. if the centers of gravity of arm tube / cartridge and the counterweight "connect" below or above the horizontal bearing. This is the case with most univipots and strongly with the Well Tempered arms.
What is special with the ET2 is that one can perfectly balance this (if one wants to and knows what to do :-).

@ct0517 

End of November 2020 I was having my Sota Saphire restored by Sota.  Since I had the ET2 removed (before I shipped table), I called ET; I was checking in to see if there was any other maintenance / updates that I should have done by ET.  A gentleman responded, not Bruce.

I could be wrong, but I don't think Bruce is working (maybe retired?) with ET anymore. The gentleman said ET focusing only on speakers now; I think I recall him saying the machining was just too labor intensive so they are just focusing on speakers.  I don't even think they are doing any more service work.  Not sure about parts, but I suspect they are selling off whatever non speaker products/parts related to arms left in inventory...as mentioned on their website re. buying an ET2.5.