ortofon OM20 / super OM 20

the thin end of the wedge
Harrocks
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ortofon OM20 / super OM 20

Post by Harrocks » 09 Sep 2019 11:42

wonder if anyone can help me clarify this:

I've just picked up a new OM Super body (with a 5e stylus).

I've also bought a new OM20 stylus to go with it.

as far as I can tell there's only one kind of OM20 stylus, but the tracking force ranges for the OM Super 20 (cartridge) is different to the plain OM20 cartridge.

the former is 1-1.5 gms (1.25 recommended)
the latter is 1.25-1.75 gms (1.5 recommended)

I'm tracking it at 1.5 currently and the sound is good (although tracking performance on my hifi news test disc isn't great - barely clearing the first 2 bands, and not clean on the third)

any advice (on the tracking weight difference between the two models) appreciated.

billshurv
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Re: ortofon OM20 / super OM 20

Post by billshurv » 09 Sep 2019 12:33

There have been 3 generations of OM20 stylus to my knowledge, but all the ones with a notch in the end to aid cueing are the same between models. 1.5g should be fine.

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Re: ortofon OM20 / super OM 20

Post by raphaelmabo » 09 Sep 2019 13:09

Yes, there are one kind of OM stylus and the OM stylus fits both OM and Super OM bodies. The difference between the OM and Super OM is the body and generator (even if they look similar on the outside), not the stylus. You can experiment with 1.25g if you wish, it won't hurt anything. :) And it won't hurt to go for 1.5g. Personal preferences. Feel free to experiment and see what works best for you.

chiz
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Re: ortofon OM20 / super OM 20

Post by chiz » 09 Sep 2019 13:26

Current specs can be confirmed here:

https://www.ortofon.com/stylus-20-p-372-n-3384

Tracking force range - 1.25-1.75 g (12.5-17.5 mN)
Tracking force, recommended - 1.5 g (15 mN)

This cartridge / stylus range has been around for many years and specs may have changed during that time.

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Re: ortofon OM20 / super OM 20

Post by raphaelmabo » 09 Sep 2019 13:50

Maybe not all are aware here of the fact that Ortofon has restarted production of the OM Super body again. It is sold with the OM5 E stylus. Ortofon only sells the OM or OM Super body with a 5 stylus. The OM10, 20, 30 and 40 are only available as stylus upgrades not as a complete package with body. If you want a new (from new production) OM body you can only get it with a 5 stylus, then you can buy a better stylus as an add on.

I got news of the OM Super production start from a swedish seller this summer. It was labeled as "the new OM Super series". I asked him "What's new? Isn't it just a restart of the old Super OM?" and he confirmed that it was indeed a restart of production of the old OM Super, the "new" thing was that it now was again available as new, that it is in current production.

Harrocks
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Re: ortofon OM20 / super OM 20

Post by Harrocks » 09 Sep 2019 14:16

thanks for the replies all.

as far as I know the OM super 5e I've bought is current production? Certainly 'new'.

given it's tracking at 1.5 isn't great, I guess there isn't much point going down to 1.25.

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Re: ortofon OM20 / super OM 20

Post by bernard1 » 09 Sep 2019 14:23

In the OM and superOM styli line I see a D25M conical stylus, with rather low compliance compared to the other ones (10, 20, etc).
What is the the purpose of this stylus ?

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Re: ortofon OM20 / super OM 20

Post by chiz » 09 Sep 2019 14:33

bernard1 wrote:
09 Sep 2019 14:23
In the OM and superOM styli line I see a D25M conical stylus, with rather low compliance compared to the other ones (10, 20, etc).
What is the the purpose of this stylus ?
It's a 1 mil stylus designed for mono microgroove records.
It was originally sold with a mono version of the OM cartridge.

Harrocks
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Re: ortofon OM20 / super OM 20

Post by Harrocks » 09 Sep 2019 15:31

they also do a 1S conincal stylus for the OM that tracks at 1.75, which I have. Useful thing to have around, particularly with its unusually low tracking force (for a conical stylus - as I understand it anyway).

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Re: ortofon OM20 / super OM 20

Post by raphaelmabo » 09 Sep 2019 16:06

You don’t mention the tonearm you are using. The OM / Super OM was specially designed for low mass tonearms (such as Thorens TP16 Mk II-III for example, and Dual ULM). And they require some time for breaking in the suspension.

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Re: ortofon OM20 / super OM 20

Post by Vanni » 09 Sep 2019 16:11

I may be misunderstanding the op, but the recommended tracking force the OM20 stylus is 1.5 gr and it should be able to clear the first two bands on the test record with ease if it's mounted on a suitable tonearm. The rec. tracking force for the OM5E stylus is a bit higher at 1.75gr.

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Re: ortofon OM20 / super OM 20

Post by billshurv » 10 Sep 2019 12:52

I like the superOM, but the shame is that some of the stylii are more expensive than the comparative 2M versions. At OM30/2M bronze level retail is about the same, although sometimes there are deals.

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Re: ortofon OM20 / super OM 20

Post by Hannes_Hannes » 10 Sep 2019 14:52

BTW, how the OM 1S differs from OM 5S? They seem to be exactly identical or do I miss something?

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Re: ortofon OM20 / super OM 20

Post by billshurv » 10 Sep 2019 15:03

I assume the 1S has replaced the 5S as no 5S replacment stylii listed.

Harrocks
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Re: ortofon OM20 / super OM 20

Post by Harrocks » 11 Sep 2019 11:04

Vanni wrote:
09 Sep 2019 16:11
I may be misunderstanding the op, but the recommended tracking force the OM20 stylus is 1.5 gr and it should be able to clear the first two bands on the test record with ease if it's mounted on a suitable tonearm. The rec. tracking force for the OM5E stylus is a bit higher at 1.75gr.
hi, if you go to the ortofon website and look at spec for the OM super 20, and then the OM 20, different tracking ranges are recommended, as per my original post, while there seems to be only one OM20 stylus available to be used on both bodies...

yes - barely clearing the first two bands on my test record which is disappointing.

music is sounding pretty good actually, so I'm not getting too worked up about that tho'.

I'd blame the tonearm, but the AT95E (the new one) is tracking as I'd expect - first three bands cleared pretty well within its specificed tracking range ... :?

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