Santa Baby! re. 2nd pivot Mod Tweek

Re: Santa Baby! re. 2nd pivot Mod Tweek

Postby jonathanb » Fri Apr 07, 2017 6:31 pm

I have never dialed in the azimuth as precisely as I did after installing the mod. Given that it also makes the arm feel much stable when being handled, I find the 2nd pivot mod well worth the expense. (And should you try it and not like it, I'll buy it from you for one of my other arm wands.)
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Re: Santa Baby! re. 2nd pivot Mod Tweek

Postby baddog » Fri Apr 07, 2017 8:10 pm

I concur, I feel it was worth it.

If I go with a second arm for mono I am going to get one as well, recommended by HW no less...
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Re: Santa Baby! re. 2nd pivot Mod Tweek

Postby izk » Tue Jul 04, 2017 6:18 pm

jonathanb wrote:I've had mine for about a week now. The sonic effect of the mod is not drastic but it is worthwhile. Bass sounds a bit tighter and more precise to me. There also seems to be a tad less smearing of the soundstage. The mod allows for a more precise and consistent setting of azimuth and thus enables the cartridge to remain dialed in better than when using the stock counterweight or Counterintuitive. This is likely responsible for a portion of the more stable soundstage I'm hearing.


My initial reaction is the similar. There is better and more stable imaging and more control top-to-bottom. The improvement is not night and day, but pretty noticeable. In addition, azimuth adjustment has never been easier and finer--exact meter reading on Fozgometer on both channels and with a stable needle reading and without affecting the tracking force in under 10 minutes. And as a cherry on top, I can now repeatedly drop the needle on the empty space between tracks accurately.
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Re: Santa Baby! re. 2nd pivot Mod Tweek

Postby Harry » Wed Jul 19, 2017 11:56 am

Like Brf I am happy with the second pivot right behind the left side weight, it approximates the headshell offset angle so the arm will not rotate when riding warps. The error in mounting is very uncritical as the measurements show in my testing. Using a good test record and an oscilloscope you can see the left-right phase angles are essentially correct in an arc of almost 1/4" of mounting.

You should see a 45 degree angle in this test, it does not change when moving the second pivot so you are getting the proper results with at least a +/- 1/8" error in mounting.

Basically, it is not critical and will work perfectly just mounting it behind the left azimuth weight.

About weight on the second pivot, it should be just enough to keep it firmly in contact. The friction level is so low you almost cannot do this wrong. If the arm want to fall to the left side it is more than enough.

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Re: Santa Baby! re. 2nd pivot Mod Tweek

Postby schugh » Fri Sep 15, 2017 2:01 am

Is the plate supposed to be shiny on the top side so you can see a reflection?
That's how it's shown in a picture in this thread somewhere.
But the top of the plate that I got is not shiny. It's got some off-white plastic type of material on the top.
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Re: Santa Baby! re. 2nd pivot Mod Tweek

Postby 10ovr » Fri Sep 15, 2017 7:15 am

schugh wrote:Is the plate supposed to be shiny on the top side so you can see a reflection?
That's how it's shown in a picture in this thread somewhere.
But the top of the plate that I got is not shiny. It's got some off-white plastic type of material on the top.

It's Surface Protective Film ,,Peel it off ImageIMG_1287 by Tim Morgan, on Flickr
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Re: Santa Baby! re. 2nd pivot Mod Tweek

Postby schugh » Fri Sep 15, 2017 10:33 am

OMG. My dealer was with me when we installed it and I can't believe we both missed that! :roll:
Thanks.
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Re: Santa Baby! re. 2nd pivot Mod Tweek

Postby Stringreen » Sun Oct 01, 2017 9:35 pm

..just a caution for 2nd pivot installation. Before actually affixing the plate to the arm, and after you attach the 2nd pivot gizmo, make positive the point of the gizmo can travel along the plate for its entire LP side (and not fall off in front of on the side of, or in back of the plate) Be sure that the arm is adjusted to have it resting on that point. (too light and it will resonate). Use a Fozgometer to adjust the azimuth....if the arm has to be adjusted clockwise when looking at the front of the arm, screw down the adjustment, and v/v. It may take a few times to get it exactly right...take the time. When done to your satisfaction, get purple Loctite (#222) and fix that set screw.....if you don't it will move. Loctite may pour out of the container....be careful...don't get any on the silver colored plate....or wipe it immediately.
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Re: Santa Baby! re. 2nd pivot Mod Tweek

Postby Stringreen » Thu Oct 05, 2017 9:31 pm

I have the 2nd pivot installed on my 3D. It certainly makes a sonic improvement, however, its very fussy to install and keep properly adjusted.
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