VTA issues TNT HR5

VTA issues TNT HR5

Postby Andreas » Wed Oct 31, 2018 9:01 am

Hi guys!
My first post here.
I got this vta problem on my jmw 12.7 arm thats sittning on a tnt hr MK5.
And the cart is a Sumiko pearwood.
I have the vta tower to the bottom and it still too high in the rear with thin sound.
My simple solution to this was to put two records on top of the platter then the record i was listening to, much better but still the cartridge is a bit high.
Is there any solutions to this problem? I know my solution w the records isnt good in any way.

Thanks for answering.
And excuse my bad english.
Regards from Sweden
Andreas
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Re: VTA issues TNT HR5

Postby Brf » Wed Oct 31, 2018 9:51 am

Welcome to the forum.

Please post a picture of your tonearm and table which will allow us to provide you with the correct advice.
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Re: VTA issues TNT HR5

Postby Andreas » Wed Oct 31, 2018 4:15 pm

Here are some pics at my tnt and 12.7 arm
Attachments
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Re: VTA issues TNT HR5

Postby Stringreen » Thu Nov 01, 2018 12:18 am

There is an adjustment to raise/lower the pivot spike your arm rests on. If there is a hole right above pivot point, insert an Allen wrench and adjust.... post a picture of your arm for additional comments. Take the picture from above the arm, and from the side.
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Re: VTA issues TNT HR5

Postby Andreas » Thu Nov 01, 2018 5:02 am

I tried to upload some pictures in a reply but it didnt seemto work.

But i found that allen screw and solwed the problem.

Thank you guys
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Re: VTA issues TNT HR5

Postby miner » Thu Nov 01, 2018 3:19 pm

Try to keep the space between the bottom of your arm pivot base and the arm base to less than 3/8" - when mine was more than that I would get acoustic feedback.
McIntosh C2300 pre; McIntosh MC452 amp; McIntosh MCD500 SACD; VPI Aries 3 with 3D arm and Ortofon Cadenza Black MC cartridge; Manley Chinook SE; PS Audio P5 regulator; VPI SDS; Pioneer RT707 R2R; Nakamichi ZX-7 cass.; Sonus faber Cremona Auditor M; REL B1
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Re: VTA issues TNT HR5

Postby Andreas » Fri Nov 02, 2018 8:12 am

As i was saying i lowerd the piwot screw, but still think that its too high. And if i lower even more the piwot base
touches the base and i got the vta tower as low as it gets. Can you se any faults in my setup?
Attachments
49C60E29-41C4-4F26-AEEE-1A5D5DCB5EAF.jpeg
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Re: VTA issues TNT HR5

Postby Brf » Fri Nov 02, 2018 9:09 am

Your tonearm is resting too low on the pivot spike, it needs to raised to create a 1/8-1/4" gap between the dog leg platform and the azimuth ring.

Your best bet is to raise the platter. It can be done in three ways.

1) First - make sure that your platter is supported on the three platter set screws that balance the platter on the bearing flange. I have seen many TNT platters that have tri-point set screws fully recessed and the platter sitting directly on the flange.

2) Second - underneath the table you will see a brass screw plug on the bottom of the female platter bearing. This brass screw plug holds the thrust plate in which supports spindle bearing. See if you can give this screw plug a couple of clockwise turns which will raise the platter.

3) Third - if none of the above work, remove the platter bearing and place a large fender washer over the bearing. The washer goes between the bearing flange and the plinth and will act as a spacer.

Let me know if you have any additional questions.
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Re: VTA issues TNT HR5

Postby Andreas » Fri Nov 02, 2018 9:27 am

Oh thank you. I se know what you mean, il give the two first tips a try and respond How it went.
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Re: VTA issues TNT HR5

Postby Andreas » Sat Nov 03, 2018 4:55 am

As you were saying the tonearm was too low, and the set screws on the platter was level.
i raised the set screws so much that the threads on the record clamp just was taking. And lowerd the female pivot point so that i have 1/8 inch between tonearm base and the dogleg.
I tried to move the brass screw under but it sat like welded.

Well it was a big improwment in sonics, now everyting is in place in the soundstage.
Im curious if it improves even more if i was able to raise the platter more?

Anyway Thank you so much for your guide.
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