Attachment 26985
Not too long ago, I had done the footwork to gather a support from a group of individuals all known for their producing bearings for the Lenco GL75 TT.
Each Individual was willing to supply a bearing to enable a under one roof Bearing Trial on a PTP Solid Nine , A custom DIY GL75 and a Standard GL75 with a Platter Bearing service/Motor service.
Around the same time as this, I was slowly heading to the DD Side of TT's and failed to materialise the opportunity to carry out the trial.
The idea of a trail has stuck, but it took on a different direction and expense to bring the one presently being worked on to fruition.
The new version of a trial/comparison I have been working toward for some time is getting close now.
The devices are coming together all under one roof, and the arena for the trial is nearly ready to be occupied.
A few things that will take place are,
Each TT will have had a Platter Spindle Bearing Housing Service to the lubrication as the minimum work done.
Each Direct Drive TT will have a Plinth Produced from the same highly compressed material,
I will look to do the same for a Goldring GL75 to give a Idler Drive a trial with matching conditions.
Each Direct Drive TT will have the same Tonearm and Cartridge used.
( The Test could include all three Tonearms to produce a better overall perception of the qualities of each TT with a different Tonearm Interface, the Cartridges used when the
PMAT 1010 Tonearm is used will be, a AT-150 MLX MM and a Kontrapunkt B Moving Coil, if the other Tonearms are used the Cartridge will be limited to one of the selected only)
Each TT will be mounted on the same Sub Plinth, Footers and Mounting Device.
Each TT will have approximately 15 minutes of free rotation before it is entered for a assessment.
There is a very reasonable priced DD TT I have, that I feel will be prejudiced against if its make becomes known , I feel confident it is going to hold its own and offer a exceptional performance in the exhibited company, I will keep the Model under wraps.
There are a few variables that may be noticed and questioned,
One is that there is not a Belt Drive in the Line up, I have a belt drive, but it is not my go to choice for a drive of a TT, this drive system was ruled out for my own usage and Belt Drive TT's have not been seriously considered for more than 20 years, so I am happy not to be putting in the work to produce the plinth for the test.
There is a PTP Idler Drive, I have been into Idler Drives for far too long to not want to put one in the Line Up.
To some, it would be perceived as a Top of the range GL75.
I hope to have my GL75 put into the trial using a produced plinth.
I would like to try and get my sold 401 back for the Trial, it was Martin Bastin treated so I don't know of much more that can be done to further improve on it.
The Idler Drives will all have their own dedicated Power Supplies to give them the best chance to perform.
There is a super heavy 'chop ones finger tips off' Phosphor Bronze Platter on the factory standard DP80, does this give it a advantage ?? I hope so, as this is the fundamental of the trial, having each TT, in what I believe, will be its most advantageous set up.
The SP10 has been fully Phonomac Treated ( what a wonderful device this is ), there is a chance it will have the fully overhauled bearing design in place for these trials, again placing it at its most advantageous position.
The TTS 8000 is a Factory Standard, with to my inspection, a near perfect Bearing, it is not the one that has been referred to by myself in the recent servicing Thread.
There is a TTS 8000 that I would really like to see in this line up, but it is a work in progress, this one is a redesigned version, that is undergoing a amalgamation of design ideas that have been collected over many years, this TTS is currently being worked on.
I am not interested in choosing a 'Champion', I am much more interested in the learning of how the differing models deliver their performance in my system, the fact that these differing performances, will hopefully be able to be compared within a short time frame between each TT's replay, will be off interest to me and making notes on what is being perceived while in use on my system will be for me a valuable record.
The process of putting all the TT's into service to receive a assessment is not a short term event, it will be carried out over time with different individuals being invited to offer their perceptions on what they are picking up on and their findings will be recorded as notes to compare to my own recorded notes.
Two MM Phonostages will be used, one will be a much improved design on the other, a Hashimoto SUT will be used, as this is still a common choice of SUT as a result of its recognised properties.
Apart from reminding me that I have gone slightly 'Cuckoo', if anyone feels I can do more to achieve a fair assessment then I will be happy to be informed.
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