What cartridge to use....Rega RB25 Structural Mod

"no less a critic than Art Dudley in Stereophile has stated that they [RB 250/300] are extremely good value for the money"

Yes, I agree. That is what I said in my post no? In fact, they are probably the best value for money arms out there. They are however, not very good. (In the same way $200 is a lot less than $3000)

"they all fell into the range of 1P-3P"

Agreed. 1P is the very worst ABEC grade and 3P is the second worst grade. 1P and 3P are not sufficient to reproduce music with any level of accuracy. All you will get is a blunted and smeared mess; which is what the RB250/300 deliver in spades.

BTW - I have not heard the RB1000, but have heard the 600 and 700. I heard the same bluntness and smearing from both. So I have no problem with your statement that 250/300 bearing spec the same as the so called ‘better’ models in the RB range.

"is a tolerance you cannot feel"

Agreed, you cannot feel it but you can most certainly hear it. Personally I listen to music – touching my tone arm does very little for me.

"I have had literally hundreds of Rega arms (of all models) in my hands and have never had a single one with excessive play."

That is a lot of arms to have owned (you must be very wealthy), but since they spec at 1P to 3P they all have excessive play. Your inability to discern that is hardly contrary to the fact.

Regards
Paul

I am not the owner of all those arms,they probably belonged to a whole lot of people.I was actually quoting from Garth's experience with Rega arms who makes the Incognito Rewire Modification,which no doubt you are familiar with.He also states "I doubt a Rega arm would barely move with an ABEC 7P bearing which has a radial play of .0001 to .00015. I rebuilt a RB250 with ABEC 5P bearings and it was tight, very tight....I would say that the quality of tonearm assembly is of even more key importance than the type or tolerance of the bearings used."That is from someone with a lot of experience adjusting and tweaking Rega Arms and their bearings.I might suggest that you heard the Rega arm in less than ideal conditions and I would say that they are much better if tweaked from the "stock" form they are set-up on a Rega table.You would hear "smearing" in spades I am sure.I have seen the official Rega Fixture for the bearing nut and it is totally wrong.Roy Gandy probably has no right to sell his tables set-up in this way.That being said something like the Origin Live silver shows how good this arm can be,very close to a Triplanar 7 as Doug Deacon has stated on this forum.

Stefan

I know who Garth is. Garth sells Rega/OEM arms. He has a lot of experience but nobody lies more than a salesman. I believe that in the industry, lying to the public is known as marketing, no?

My setup is very good and more than adequate to come to an objective conclusion as to which arm is better. (I can send a photos and description off line if you want – email me) Also, I have no reason to like or dislike Rega arms. I am only interested in having good sound – I do not have to sell anything to anybody.

My RB's (I had 3) were all modified with Incognito(2) and Discovery. I loved them till I mounted my Morch – the difference was nothing other than dramatic. Even some arms that are less expensive than a modified RB (Scheu Classic/Bel Canto Unipivot and Graham Robin) are significantly better. Yes, I tried them both and now own a Scheu also. At one time I had two Morch's mounted on my table.

A good friend who is a Rega fan lent me his RB600 to compare against my Morch. It was a joke – the RB was blown out of the water. He now is running a Morch UP4 also.

I think Jeff would be well advised to consider upgrading to an arm like a Morch UP or Hadcock and keeping his Koetsu Red.

Regards
Paul

Whoh! Are you folks getting a little out of control? An Origin Live modified RB300 with Cardas wiring is hard to beat for the price. It beats performance on a lot of arms costing up to 3 times more if one has the correct set up with matching cart. I beg to differ with some of the negative comments above from the experience I have had.

I now use an Origin Live Incognito, Shelter 90x cart, SOTA vacuum table. But the Modified RB300 with 901 cart performed quite good for me on my system. It had new Cardas internal wiring with 5 pin DIN termination. I have read where the modified RB250 actually outperforms the modified RB300 (Thorsten Loesch/TNT-Audio, 1999 @ www.tnt-audio.com ).

I do believe the Benz would be too warm for the arm Jeff now owns.

Yes,Poaul Ladegaard in his paper on mechanical resonances in turntables established that lightweight arms are really the best performers overall.I think he used a Danish Moerch arm as one of the arms in the experiment actually.This was cognizant also on the best arm /cartridge match in terms of cartridge resonance and system matching.If you can find a good used UP-4 I would probably try it myself.I don't think Garth is misleading though and I am aware there are better arms out there.Take Mark Baker's development of the basic Rega into the Encounter arm for example.You can see what could be done to it.