Goldmund Reference Turntable ?

The two Pierre Lurne tangential-tonearms T3 (any incarnation) and T5 where - while correct in their original idea and nicely made - burden from the start with a few very serious mechanical problems (not just their sleigh-mechanism...) which actually limited the number of cartridges REALLY suitable to be mounted in these particular tonearms to a small handful. All these cartridges had several design features in common ( low mass body and VERY rigid -in the mechanically and durable sense of the word...;-) .... - suspension of the cantilever being the most important).
The Goldmund tangential tonearms were technically fine executed attempts to bring the tangential principle from its theoretical superiority to suitable practice.
They weren't the first and they are not the last.
Sadly neglected here - as in many other tonearm designs - was the aspect of energy transfer.
Hi Nandric - if it is about technical/design aspects I gladly join.
Most threads the past months did not really move me to write any comment.

the biggest problem I was facing with the TF-3 was if you wanted to mount a heavy system the counterweight was not perpared to balance the cartridge. I was thinking about producing a heavier counterweight but keeping in mind that due to the intensive movements of the correction technology of the arm you should not use cartridges with sensitive technology i.e. rubber parts.

I experimented with different platters. I found out a stiff and well fixed extra platter improves the sound.

Finding a well preserved Goldmund Reference I is still one of the best preconditions to build up an excellent analogue system.

Hello Kevin
Hopefully you will have the black service manual to keep you right , I have had mine for some 15 yrs now , Take note of the mechanical grounding spike as it is very important to the sound also hopefully you should have the correct oil supplied . The T3f has a sensor that doesnt like direct light for it will suddenly start tracking across your treasured vinyl , best you play around with an old record and cartridge first. My T3f has been boxed up and shoved in a cupboard for a few yrs iam using the table with a Kuzma airline/ A90 the table now sings like never before !

I've been testing a Studio/T3 for 3 years and while I'll not admit that it's a snap to set a cartridge up, I'll say that once so done the result is pure holographic. I mean- reach out and touch Mikes Davis, while the acoustic pressurizes the room. I don’t hear any image shift as the arm self corrects. Perhaps I’m just lucky or got a good match with the Cello I’m using. Kevin Olsen, noted audio expert, owned it before me and ran a Purple Heart for years with zero problems. You must protect the cartridge while moving the counter weight. And the process is awkward- if you have two thumbs get a steady handed friend to give an assist. I think Lurne’ was ahead of his time. There is a classic look to these tables and the Ref offers a high degree of mass loading. His J1s are spectacular. But there are tricks to setting them up. I’ll discuss it all in 2011 in TAS.

Peter Breuninger
Sr. Writer,
The Absolute Sound

My respects to everyone.

I have had a GRT, T3F and PL8 since 1987. I have never had a single problem nor I have found this package complicated to set up. It requires of course some dedication.
The table has a single main problem and this was the original natural oil for the spindle/shaft. I can not explain how bad it was. I use now the VdH spindle oil.

The T3F had two major problems and they are related with what Syntax and Tuchan said (lack of frequency extremes and CW mass).

I have found the aluminum headshell of this arm to be too heavy at about 7.5gr. This accounts for almost 50% of its effective mass. I changed the material of the headshell bringing the mass down to 2.5 gr. This restored a lot in the extremes, specially in the hi-frequencies.

The main problem however was in the CW, IMO Goldmund in the attempt to keep the CW hided within the bridge placed the CW too close to the bearings, with such short leverage the system can only work by increasing the mass of the CW, for example, with a cartridge of 10gr only the heaviest of the CW could be used and this one has 195gr.

I solved this issue making by CNC a prolongation of the CW shaft and by moving the CW back a mere 40mm I reduced its mass from 195gr to less than 50gr for the 10.5 gr of the Lyra Titan-i.

The gain in performance is terrific.

If somebody having this arm is interested can contact me back, I can provide the respective drawings or CAD. After all the total cost of this mod was less than 150 U$D.

Not that making this you will solve all the design issues of the T3F but the gain in performance is huge and your cantilever will work a lot less stressed.

Regards,
Claudio Abbiendi
Bangkok-Thailand.