Eminent Technology ET-2 Tonearm Owners



Where are you? What mods have you done ?

I have been using these ET2's for over 9 years now.
I am still figuring them out and learning from them. They can be modified in so many ways. Bruce Thigpen laid down the GENIUS behind this tonearm over 20 years ago. Some of you have owned them for over 20 years !

Tell us your secrets.

New owners – what questions do you have ?

We may even be able to coax Bruce to post here. :^)

There are so many modifications that can be done.

Dressing of the wire with this arm is critical to get optimum sonics along with proper counterweight setup.

Let me start it off.

Please tell us what you have found to be the best wire for the ET-2 tonearm ? One that is pliable/doesn’t crink or curl. Whats the best way of dressing it so it doesn’t impact the arm. Through the spindle - Over the manifold - Below manifold ? What have you come up with ?
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Chris, I wish I could give you a more interesting 😉 description of how I remove tonearm cartridge leads from a cartridge, but my method is exactly like yours. Only thing I would add is that the tiniest amount of Deoxit helps keep the connection lubed and easier to separate while presumably also helping conductivity. Your use of a toothpick is also my method of expanding clips that are too tight due to overcrimping. As you know, when crimping the clips in order to make the connection tighter it is all to easy to crimp it in a way that the clip loses round; this would most likely decrease the number of contact points between the clip and cartridge prong. I took a small needle nose pliers with serrated "teeth" and by using a small thin round hobby file I made the space between the "teeth" and on both sides just wide and deep enough to cradle the cartridge clip; this allows crimping with equal pressure along the entire length of the clip without deforming it; and I do this with the toothpick in the clip to help keep round and to prevent overcrimping. Re subwoofers:

In my experience, you are exactly correct re near field placement. My pair of REL’s sit on either side of my two-person listening couch. I set the xover point as low as possible; usually at 28hz with occasional adjustments of a couple of hz one way or the other depending on the recording. I find that anything much higher than that thickens the sound in the midrange unnaturally and what I am looking for, more than anything, is not necessarily more obvious bass weight, but the concert hall (and studio) ambient information that is found in that frequency range. I also find that the midrange, independent of the presence of obvious bass information, takes on added purity and density when the system can reproduce the lowest frequencies. A controversial topic and not entirely understood (certainly not by me), but just as there exists the overtone series in music, we have undertones or subharmonic series that factors into all this. For instance, a recording of a woodwind choir playing in a range well above a subwoofer’s xover point will sound noticeably fuller and with more tonal density (as in live music) with the subwoofer on than with it off; importantly, and as Pegasus points out, eventhough there is no spurious midrange information being reproduced by the subwoofer. Re inverting phase setting: I think whistling 😚. One can whistle while blowing air out or by sucking air in. To me, the correct phase setting sounds like the bass is being projected out (as it should be) as opposed to sounding like it is being sucked in. The latter, as well as generally sounding weaker in volume, detracts from the contribution of the bass instruments in musical terms. I like your hand on the woofer cabinet method. Btw, while I generally agree that directionality is not a major issue with subwoofers, before I bought a second REL,  I found that with a single sub "up-front" with the main speakers sometimes center images would subtly "lean" in the direction of where the sub was placed (if to one side or the other); again, whether there was obvious bass information or not. Regards.

Hello Chris,
Good audiophile day here in the Carolinas. Crisis over.  I tore down the VPI to more closely inspect the shaft and pulley on the SAMA.  My SAMA is a very early version which included a small flywheel.  It is like a very fat stainless steel washer that slides down over the pulley and rests on a flange at the bottom of the pulley, just above the motor housing. It is not attached to anything but just sits on the flange.  I noticed that the flywheel was wobbling far more than the pulley/shaft.  In discussions with a former dealer friend of mine in Florida he advised that the flywheel only came with very early versions of the SAMA and VPI had abandoned it because they found it more detrimental than helpful.

So.......I reassembled the table and tried it without the flywheel.  Voila, rumble and speaker pumping all but gone.   It's not 100% but pretty close.  I'll need a new motor someday but it is certainly not critical.  Incidentally, I had the same thought regarding a loose set screw on the pulley.  That is why I tore down the table.  Unfortunately, this version of SAMA has no pulley set screw but is evidently pressure fitted over the motor shaft.

Chapter 2:. Santa Clause arrived today with my magnesium arm wand. I installed it and redid setup.  I'm only using the one big weight in addition to the one to which the other weights attach.  Initially one weight was not enough to get proper tracking force even at the very end of the plank.  Rather than add weight I turned the weight bracket around so the weight barrack screw points out instead of in.  Unfortunately, I installed the new wand right after solving the rumble problem so I'm not sure which improvements are attributable to which tweak but, midrange seems a little warmer, bass tighter, separate instruments seem better defined and upper end smother but no less extended.  I don't have 20 foot wide pianos or drummers with a 15 foot wingspan. Finally, the soundstage seems a little deeper.

Next time wife is away for a few hours I'm going to try the near field sub placement.  More on subs later.
Cheers,
Harry

The newer Magnesium wand is definitely heavier, and precluded my using a stock I-beam. In the final listen, I had to conclude that two springs work best in my setup, with two little damping pads removed, allowing freer movement. Bruce said I didn't need them.
My cartridge is supposedly best with the top surface parallel to the record surface. This is hard to eyeball, especially when the arm wand looks parallel and the cartridge looks tilted back.  Does anyone know if, when the arm is parallel to the record, the cartridge is parallel as well? I mean is this a good starting point for setting VTA? My eyes are old and parallax gets the best of my judgement.
Thanks,
John 
What started me thinking about the issue of how much to (not) torque down on bolts/screws was when I realized that I had inadvertently compressed and deformed one of my wands’ "head shell" to the point that the cartridge would no longer be "parallel to the record surface"; which I believe, in theory, it should be. Obviously, that is still no guarantee of intended VTA.

Thanks frogman,
I don't overtighten my cartridge screws, and my wand is spanking new.
So, can I assume that if the wand is parallel to the record, the cartridge top is as well? I just need a starting point.
John