Sony PS-X55 Extra Tonearm Weight

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Van_Isle
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Sony PS-X55 Extra Tonearm Weight

Post by Van_Isle » 25 May 2015 04:51

Does anyone out there have the auxiliary tonearm weight for the PS-X55 and can they take measurements of it (mass and dimensions)?

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Re: Sony PS-X55 Extra Tonearm Weight

Post by Van_Isle » 16 Aug 2015 20:59

Anyone?

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Re: Sony PS-X55 Extra Tonearm Weight

Post by almabes » 03 Nov 2015 13:31

Maybe. I bought a PS-X55. I'll check it out and see if I got the aux weight with it.

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Re: Sony PS-X55 Extra Tonearm Weight

Post by almabes » 03 Nov 2015 13:38

This slid into the back of my PSX-55's tonearm:
sonypsx55weight.jpg
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Re: Sony PS-X55 Extra Tonearm Weight

Post by Van_Isle » 03 Nov 2015 15:33

Thanks!

Any idea what the mass is?

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Re: Sony PS-X55 Extra Tonearm Weight

Post by almabes » 03 Nov 2015 16:15

It's more than 5g so I'll have to take it to work. I think they have a precision scale there.

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Re: Sony PS-X55 Extra Tonearm Weight

Post by almabes » 03 Nov 2015 17:35

The scale at work says 12g. I don't have a micrometer, but will buy one this weekend.

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Re: Sony PS-X55 Extra Tonearm Weight

Post by almabes » 12 Nov 2015 03:30

I bought a Starrett caliper and took some measurements. Hopefully these make sense to you. Think of the sub weight as two cylinders stacked on each other; a major and minor cylinder. The minor cylinder has a flat spot machined into it, and a hole drilled in the center. All the edges have a 45 degree chamfer machined into them.


Major cylinder diameter 12.80 mm
Minor cylinder diameter 7.97 mm
Diameter to the flat spot on the minor cylinder 6.47 mm

Major Cylinder Length 9.2mm
Total length 19.06 mm
hole in the top of the minor cylinder 3.95 mm
hole depth 8.37 mm

If you need, I can try to annotate a picture.

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Re: Sony PS-X55 Extra Tonearm Weight

Post by mkoerner » 13 Nov 2015 08:37

Thank you. That is very valuable Input!

Mike

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Re: Sony PS-X55 Extra Tonearm Weight

Post by Van_Isle » 13 Nov 2015 16:48

Yes, thanks very much!

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Re: Sony PS-X55 Extra Tonearm Weight

Post by ministering » 13 Oct 2019 18:46

almabes wrote:
12 Nov 2015 03:30
I bought a Starrett caliper and took some measurements. Hopefully these make sense to you. Think of the sub weight as two cylinders stacked on each other; a major and minor cylinder. The minor cylinder has a flat spot machined into it, and a hole drilled in the center. All the edges have a 45 degree chamfer machined into them.


Major cylinder diameter 12.80 mm
Minor cylinder diameter 7.97 mm
Diameter to the flat spot on the minor cylinder 6.47 mm

Major Cylinder Length 9.2mm
Total length 19.06 mm
hole in the top of the minor cylinder 3.95 mm
hole depth 8.37 mm

If you need, I can try to annotate a picture.
Hi, I have a Sony PS X55 but there is no additional load so that I can use heavier heads on the tonearm, if it does not bother you, please post a photo of the additional load in different projections. Thank.

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Re: Sony PS-X55 Extra Tonearm Weight

Post by lenjack » 13 Oct 2019 18:57

One can alway tape a coin or two to the existing counterweight in the meantime.

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Re: Sony PS-X55 Extra Tonearm Weight

Post by ministering » 13 Oct 2019 21:49

lenjack wrote:
13 Oct 2019 18:57
One can alway tape a coin or two to the existing counterweight in the meantime.
I think this is a bad idea, an attached coin or two to the back of the tonearm load will lead to an unbalanced tonearm, which will badly affect the sound.

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Re: Sony PS-X55 Extra Tonearm Weight

Post by lenjack » 13 Oct 2019 22:18

No. You only do this if you cannot balance the arm because your counterweight is not heavy enough. This might happen if you are using an extremely heavy cartridge/headshell combination, which would be a rare occurrence. If you need to do this, you then balance the arm in the manner prescribed by the turntable manufacturer.

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Re: Sony PS-X55 Extra Tonearm Weight

Post by ministering » 14 Oct 2019 00:27

lenjack wrote:
13 Oct 2019 22:18
No. You only do this if you cannot balance the arm because your counterweight is not heavy enough. This might happen if you are using an extremely heavy cartridge/headshell combination, which would be a rare occurrence. If you need to do this, you then balance the arm in the manner prescribed by the turntable manufacturer.
Unfortunately, this is difficult to do without disrupting the balancing of the tonearm, since when installing an additional load in the form of a coin on the main load, it is difficult to install it strictly in the center of the horizontal axis of the tonearm, and the slightest deviation from the horizontal axis will lead to unbalance.

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