Ortofon 2M vs OM series

the thin end of the wedge
Shadowman82
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Ortofon 2M vs OM series

Post by Shadowman82 » 06 Dec 2019 21:37

So KAB USA is offering Ortofon OM 10,20,30&40 stylus mounted to concord bodies and sell them as PNP solutions for all Technics SL-1200 turntables . Now when comparing these to their equivalent 2M series counterparts they are quite a bit cheaper . How do the OM series compare sound quality wise to the 2M series ? The only difference I can see in the specs is that the OM series have a 4mv output vs 5mv for the 2M series . Currently I have a 2M Blue but maybe some day I'd like to upgrade .

billshurv
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Re: Ortofon 2M vs OM series

Post by billshurv » 06 Dec 2019 22:44

A very good question. I like the look of the concorde shape and have an original LM concorde but generator wise the concorde is a solid pin OM style and the 2M is the split pin Super OM style. In theory this makes the 2M a superior generator, but enough people prefer OM over superOM to suggest it is not that simple. I'm an OM fan so have no wish to try the 2M.

The oddity is the $$$ concorde century which has a 2M blue generator in it.

Collux
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Re: Ortofon 2M vs OM series

Post by Collux » 06 Dec 2019 22:52

KAB link:
http://www.kabusa.com/index_pc.htm
Navigate by selecting from LHS.
Ortofon DJ and select HiFi (for SL-1200s)
also from the link
KAB Audiophile or Ortofon HiFi (for SL-1200s)

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Re: Ortofon 2M vs OM series

Post by wolfie62 » 07 Dec 2019 12:36

I don’t get it.

I did what you said, and it still shows astronomical prices for styli, the exact same prices as if you just navigate to HiFi styli:

This is why I haven’t purchased any styli for my Ortofon Super OM body:
DA39D4B0-DAEB-436F-9A80-A50BC1972342.jpeg
(148.26 KiB) Downloaded 260 times

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Re: Ortofon 2M vs OM series

Post by Dan_Seweri » 07 Dec 2019 14:24

billshurv wrote:
06 Dec 2019 22:44
generator wise the concorde is a solid pin OM style and the 2M is the split pin Super OM style. In theory this makes the 2M a superior generator, but enough people prefer OM over superOM to suggest it is not that simple.
IMHO the pole pins do not really make a difference. But the number of windings of the coil and inductance do make the difference:

- OM, Concorde Pro: 750 Ohms, 450 mH
- OM Super, 2M Silver, Concorde Nightclub Mk2: 1000 Ohms, 580 mH
- 2M Bronze, 2M Black: 1200 Ohms, 630 mH
- 2M Red, 2M Blue: 1300 Ohms, 700 mH (at least in theory, all my 2M Reds came with 1200 Ohms)

IMHO the Concorde Nightclub MK 2 is the best body for a stylus 20, 30 or 40.

Shadowman82
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Re: Ortofon 2M vs OM series

Post by Shadowman82 » 08 Dec 2019 00:33

All I know is that those PNP OM series cartridges that KAB offers are cheaper than if you were to get the equivalent in the 2M series .

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Re: Ortofon 2M vs OM series

Post by raphaelmabo » 08 Dec 2019 11:46

The 2M is a new version of the OM-serie, the body is different and there's internal differences too, the idea with the 2M was to make it more compatible across a wider range of tonearms. The OM has higher compliance so suits low to mid mass tonearms best. I have listened to both the 2M and the OM series, and I personally likes the OM better, I had a OM20 that I was quite pleased with. I would say that the main difference between the 2M and the OM is that the 2M sounds more forward, has a faster and more biting sound, sharper to the edges, more CD-like. OM sounds more laidback, relaxed, warmer you could say. There's not a big difference, but it is there. OM suited my ears better. Both has the typical Ortofon sound - a bit of a dry, analytical and neutral sound.

billshurv
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Re: Ortofon 2M vs OM series

Post by billshurv » 08 Dec 2019 23:06

Dan_Seweri wrote:
07 Dec 2019 14:24

IMHO the pole pins do not really make a difference. But the number of windings of the coil and inductance do make the difference:
- OM Super, 2M Silver, Concorde Nightclub Mk2: 1000 Ohms, 580 mH

IMHO the Concorde Nightclub MK 2 is the best body for a stylus 20, 30 or 40.
There is a definate measurable difference with the split pins but requires a different approach to the phono stage to make the most of. The nightclub is an interesting outlier. For a while I hoped it had the split pin superOM generator in but sadly not. But its the only solid pin I could find with those specs.

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Re: Ortofon 2M vs OM series

Post by kingfisher224 » 09 Dec 2019 03:06

Am I misinformed here, it is my understanding that since the 2M series came to be it is of higher performance than the OM series. I have 1 of each but my 2M Red is on a Jelco 750 tonearm mounted to HEYBROOK TT2 and OM10 mounted on REGA rb220 on Planar 2 (original Planar 2). Both sound very good, but better? Difficult to say. Each or in separate locations.

Which is the better cartridge?

Erin1
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Re: Ortofon 2M vs OM series

Post by Erin1 » 09 Dec 2019 03:08

I have read that the OM series has lower inductance and a flatter frequency response than the 2M series.

Both can sound nice in the right system.

billshurv
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Re: Ortofon 2M vs OM series

Post by billshurv » 09 Dec 2019 11:14

kingfisher224 wrote:
09 Dec 2019 03:06
Am I misinformed here, it is my understanding that since the 2M series came to be it is of higher performance than the OM series.
There are two generator styles. Solid pin used in the LM, OM, concorde and DJ ranges and the split pin used in the 500 series, SuperOM and 2M with various tweaks over the years. Ortofon have never tried to explain why they have changed the windings over the years, but AT have done the same. All the split pin designs have theoretical advantages, but with certain phono stages the solid pins may perform better. So no clear winner.
Which is the better cartridge?
That is up to personal choice. I think the 2M series are too heavy, so not for me. If they did a nude diamond version of the Qbert I think that would be a stunning combo as even the 2M has too high compliance for most modern arms.

billshurv
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Re: Ortofon 2M vs OM series

Post by billshurv » 09 Dec 2019 11:15

Erin1 wrote:
09 Dec 2019 03:08
I have read that the OM series has lower inductance and a flatter frequency response than the 2M series.
Frequency response is as much a function of the phono stage. All will be flat if loaded correctly.

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Re: Ortofon 2M vs OM series

Post by raphaelmabo » 09 Dec 2019 11:47

kingfisher224 wrote:
09 Dec 2019 03:06
Am I misinformed here, it is my understanding that since the 2M series came to be it is of higher performance than the OM series. I have 1 of each but my 2M Red is on a Jelco 750 tonearm mounted to HEYBROOK TT2 and OM10 mounted on REGA rb220 on Planar 2 (original Planar 2). Both sound very good, but better? Difficult to say. Each or in separate locations.

Which is the better cartridge?
It depends how you define "better". Let your ears decide. My ears prefer the OM over the 2M, others prefers the 2M. But it's not a big difference, it's not a night-and-day difference. Both series has the Ortofon house-sound. They are just different variations on the same theme.

kingfisher224
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Re: Ortofon 2M vs OM series

Post by kingfisher224 » 09 Dec 2019 23:31

Thanks raphaelmabo, For me, its difficult to compare. The 2M RED resides on a table at me girlfriend's and the OM10 here on my REGA. I purchased my 2M RED online fleamarket as I did with the OM10 SUPER. What astounded me on my purchase of the OM10 was the great sound coming out of something so small. In contrast to the 2M red's larger size, I expected and was satisfied with the performance given its cost, relative only to what Ive read or pictured online.
So...Given the numerical scale of model numbers, should I expect better performance from the OM20 and higher model# 30, 40...? I've been away from vinyl for some years and only recent regained interest. Hens my ignorance in the field.

kingfisher224

Erin1
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Re: Ortofon 2M vs OM series

Post by Erin1 » 10 Dec 2019 08:50

Yes, you get better performance as the number increases. But, you need clean records and decent speakers to take full advantage. The sound quality doesn't go up the same percentage as the price.
The improvement is there, but not 300% better sound for 300% extra cost.
That's not how it works. It's subtle, or not, depending on your point of view.

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