cre009

Wammer
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    53
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About cre009

  • Rank
    Wammer
  • Birthday Private

Personal Info

  • Location
    UK Bristol

Wigwam Info

  • Turn Table
    LP12, 301, XA + 14
  • Tone Arm & Cartridge
    many
  • SUT / Phono Stage
    Kinshaw + 3 others
  • Digital Source 1
    Linn Mimik
  • Pre-Amp
    Kinshaw Perception
  • Power Amp/s
    Lumley Reference ST4
  • My Speakers
    Heybrook HB1
  • Trade Status
    I am not in the Hi-Fi trade

Recent Profile Visitors

218 profile views
  1. cre009

    ariston rd11 e

    If you got the deck with SME for the £130 then you got a very good deal because the decks alone normally sale for around that. My understanding is these decks normally came with a different arm that allowed end of side arm lift. If the problem is intermittent then cleaning the pitch pots like Adam suggests may resolve it. My suggestion is to take the opportunity to learn the deck and how to set up the suspension and perform a service. It has some different features to the standard RD11 due to the DC operation but the sub chassis is similar.
  2. cre009

    ariston rd11 e

    The Ariston RD11E uses a DC power supply/motor. My understanding is the early DC based decks tended to suffer a bit more from slowing under load compared with the AC decks of the era and so may be part of the issue here.
  3. cre009

    DIY LP-12 plinth

    Do they use glue as well as the dowels? I am about to have my own go at plinth building for a couple of DIY decks using components from Linn and AR. Got some Sapele for my first try.
  4. Options for pulley removal and suggested tools discussed here. http://lpturntables.blogspot.com/2012/07/removing-rega-pulleys-safely.html
  5. Had a quick look at mine which is awaiting installation onto one of my decks. The serial is 0113xx which I recall I purchased installed on a Heybrook TT2 deck around 86. The serial is 6 digits rather than the 7 in yours. Not sure about the first digit in yours because they did not sell 9 million of the arms.
  6. My understanding is that the Linn pulleys are press fitted to the motors so are difficult but not impossible to remove. To remove them without damaging the motor or spindle requires the use of a suitable gear removal tool. Occasionally motors with issues show up on ebay and can be had relatively cheaply which would allow the pulley to be extracted. There were 2 that showed up over the last few weeks. I have only seen one extracted Linn pulley show up over the last year. Based on my own research I don't believe more than a few thousand RD11 decks were sold before they were replaced by the RD11s in late 74. The RD11s was often sold with a square cross section belt that required a different pulley. I have not tried it but it may be possible that a Thorens TD150 (or TD160) pulley would work. Ivor based his original prototype turntable on a TD150 and the platter dimensions of the TD150 and LP12 are very close with perhaps 1mm difference. I have seen TD150 pulleys available on UK ebay. The Thorens belts are narrower and belt thickness contributes to the speed so this would need to be considered. Just found out the Thorens motors rotate faster (375 rpm) than the motors used by Linn (250 rpm) so the pulley size will be different
  7. cre009

    HMV going into administration

    My understanding is the remaining Fopp outlets are part of HMV so will be interested if those are also involved.
  8. cre009

    2019 £500 Turntable Challenge

    Thanks for the picture. I will probably need to get one of the decks to fully visualise the operation. Loads of different approaches to engineering which is what make TTs so interesting.
  9. cre009

    2019 £500 Turntable Challenge

    Attached is the HFC review of the Systemdek IV where the use of "hanging coil springs" is described for this deck and also used for the IIX. Also a HFN review of the IIX which says positive things about the arrangement. For the purpose of levelling some compression must be applied to decks such as the AR XA, Linn LP12, Heybrook TT2, TD150 and original Systemdek Transcription. I have all of them in my collection. For these decks the platter/sub chassis effectively bounces on the springs. For the Systemdek Transcription very compliant springs were used to increase the level of compression to prevent lateral movement. On the LP12 and TT2 the springs are stiffer to avoid that movement. For TD150 and XA sponge is inserted to stiffen the springs. I have never owned the later Systemdeks or PTs but I understand the sub chassis hangs from the springs. Uzzy claims this is superior but I have no experience to understand if that is the case rather than just being different. I assume some kind of compression adjustment must still be applied for the purpose of levelling.
  10. cre009

    My Latest Purchase

    In the patent hearing Hamish Robertson conceded that the RD11 was based on a prototype turntable developed at Castle by Ivor Tiefenbrun. All the development was done at Castle with plinths and dustcovers etc externally sourced.
  11. cre009

    My Latest Purchase

    Not been able to verify it either way but I have seen it suggested that the very original batch of Castle build RD11 plinths may also have been Goldring sourced. Subsequent Dunlop-Westayr RD11 plinths were sourced from Victor Hallam of Derbyshire and LP12 plinths were apparently from Greaves of Sheffield.
  12. Warm and cuddly was part of it - in reality evaluate the "bass bloom". I wanted an 80's type deck at around the same standard as my original LP12 purchase prior to upgrades for comparison purposes. Also it was about the only way to do it quite cheap as a learning experience given that I already had some components available to me including a plinth.
  13. Thanks - I have a Cirkus bearing on my higher spec deck but my second deck is a bitsa I built myself where I specifically wanted pre Cirkus/Valhalla for a variety of reasons. I also have a couple of spares associated with a DIY project I am undertaking.
  14. cre009

    DIY Turntable?

    Have a look at the Peter Moncrieff piece I linked early on in the thread. He details a series of belt interactions that may at a very minute level impact on sound quality. How many of the things he describes will actually have an impact is open to question but it is stuff that requires consideration. For suspended decks if the belt interaction causes even a faint movement not visible to the eye it may impact quality despite the flywheel effect. The arm will also move with the platter which opens the possibility of causing minute interference with the stylus tracing the grooves. http://www.stefanopasini.it/Audio_Moncrieff.htm I actually like suspended decks and I am clear that the use of a suspension can have benefits for other reasons but there are some trade offs. The nature of the suspension allows all sorts of options. Linn LP12s use stiff springs in a compressed state to prevent lateral movement. The Systemdek Transcription uses very compliant springs that are much more compressed to try to avoid that lateral movement. The Fons CQ30 uses springs compressed to the point where it is questionable they are even useful. I know elsewhere you have been advocating the use of springs in a stretched state as superior but are those likely to have more or less lateral movement? https://www.vinylengine.com/turntable_forum/viewtopic.php?t=1432
  15. Out of curiosity what are the indicators of "hardening errors on the thrust pad" that you can tell if you have a bad one?