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Thread: Gathering at NWA

  1. #61
    Join Date: Jan 2008

    Location: Wrexham, North Wales, UK

    Posts: 110,012
    I'm AudioAl'sArbiterForPISHANTO.

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    Quote Originally Posted by Barry View Post
    Sorry Marco, the two arms look similar with the 'cube-shaped' bearing housing. Personally, I prefer static balanced arms as these do not use springs which can ring. As long as the TT is level and one's records are flat, there is no real advantage to dynamic balancing.
    Sure, however, I preferred the look of the 212-D, which also came with a much better reputation, based on the reviews I read, and so I have no reason to regret my choice

    If you go onto the Vinyl Engine site and search for the thread entitled "Best Tonearm For TD-124", you'll see an interesting discussion on the subject, where both Ortofon arms are mentioned. Unfortunately, direct links to VE don't work on AoS, so you'll have to do it manually.

    But I digress, both the RS 212 and AS-212 have identical geometry. To realise the optimum performance, the arm must be set up so that the radial null-points are at 58.5mm and 114.5mm. I assume Ortofon supply a protractor with these null-points marked.

    If you try to set the arm up according to Baerwald you will have to skew the cartridge in the headshell by ~ 1.5 degree, as well as increase the overhang by ~3mm.

    Ortofon/Jelco designed the arm to have a particular geometry which does not correspond to either Baerwald or Stevenson. There is nothing wrong with this, it's just to set the arm up as designed, you can't use arm alignment protractors that are marked with either the Baerwald or Stevenson null-points..

    The errors in doing so are small, and probably inaudable - but if you are going to do the job, you may as well do it properly. As one supermarket says: "every little bit helps".
    Yup, although the geometry corresponds more to Stevenson than Baerwald. My arm was set-up according to the null points marked on the supplied protractor, so all is spot on!

    Marco.
    Main System

    Turntable: Heavily-modified Technics SL-1210MK5G [Mike New bearing/ETP platter/Paul Hynes SR7 PSU & reg mods]. Funk Firm APM Achromat/Nagaoka GL-601 Crystal Record Weight/Isonoe feet & boots/Ortofon RS-212D/Denon DL-103GL in Denon PCL-300 headshell with Funk Firm Houdini/Kondo SL-115 pure-silver cartridge leads.

    Paul Hynes MC head amp/SR5 PSU. Also modded Lentek head amp/Denon AU-310 SUT.

    Other Cartridges: Nippon Columbia (NOS 1987) Denon DL-103. USA-made Shure SC35C with NOS stylus. Goldring G820 with NOS stylus. Shure M55E with NOS stylus.

    CD Player: Audiocom-modified Sony X-777ES/DAS-R1 DAC.

    Tape Deck: Tandberg TCD 310, fully restored and recalibrated as new, by RDE, plus upgraded with heads from the TCD-420a. Also with matching TM4 Norway microphones.

    Preamps: Heavily-modified Croft Charisma-X. LDR Stereo Coffee. Power Amps: Tube Distinctions Copper Amp fitted with Tungsol KT-150s. Quad 306.

    Cables & Sundries: Mark Grant HDX1 interconnects and digital coaxial cable, plus Mark Grant 6mm UP-LCOFC Van Damme speaker cable. MCRU 'Ultimate' mains leads. Lehmann clone headphone amp with vintage Koss PRO-4AAA headphones.

    Tube Distinctions digital noise filter. VPI HW16.5 record cleaning machine.

    Speakers: Tannoy 15MGs in Lockwood cabinets with modified crossovers. 1967 Celestion Ditton 15.


    Protect your HUMAN RIGHTS and REFUSE ANY *MANDATORY* VACCINE FOR COVID-19!

    Also **SAY NO** to unjust 'vaccine passports' or certificates, which are totally incompatible with a FREE society!!!


  2. #62
    Join Date: Jan 2008

    Location: Wrexham, North Wales, UK

    Posts: 110,012
    I'm AudioAl'sArbiterForPISHANTO.

    Default

    Btw, as a small aside (this is aimed at Dom), I forgot to mention that when I set my T/T back up again at home, I noticed that you'd left the anti-skating on my arm set at between the 2 and 2.5 mark (obviously when we were using the DH1), and the VTF was set (somewhat bizarrely) at 2.8g.

    My SPU needs 3 on the anti-skate, together with 3g VTF, in order to perform optimally... Whilst the SPU sounded pretty good, when we were listening to it at the end before I went, it wasn't fully optimised. Furthermore, when we listened to the Paul Hynes head amp for the second time (which phase-inverts the signal), we forgot to reverse the polarity of your speaker cables...!

    I was wondering why, although I really like your phono stage, I preferred it the first time with the PH head amp in circuit (when the speaker cable polarity was reversed), and the second time on its own (when the cables hadn't been reversed, to compensate for the phase-inverting)... The PH unit sounds markedly better in the former configuration.

    Anyway, we can revisit that one next time, when I'll bring both my Croft preamp and TD Copper amp along, and see what they do!

    Marco.
    Main System

    Turntable: Heavily-modified Technics SL-1210MK5G [Mike New bearing/ETP platter/Paul Hynes SR7 PSU & reg mods]. Funk Firm APM Achromat/Nagaoka GL-601 Crystal Record Weight/Isonoe feet & boots/Ortofon RS-212D/Denon DL-103GL in Denon PCL-300 headshell with Funk Firm Houdini/Kondo SL-115 pure-silver cartridge leads.

    Paul Hynes MC head amp/SR5 PSU. Also modded Lentek head amp/Denon AU-310 SUT.

    Other Cartridges: Nippon Columbia (NOS 1987) Denon DL-103. USA-made Shure SC35C with NOS stylus. Goldring G820 with NOS stylus. Shure M55E with NOS stylus.

    CD Player: Audiocom-modified Sony X-777ES/DAS-R1 DAC.

    Tape Deck: Tandberg TCD 310, fully restored and recalibrated as new, by RDE, plus upgraded with heads from the TCD-420a. Also with matching TM4 Norway microphones.

    Preamps: Heavily-modified Croft Charisma-X. LDR Stereo Coffee. Power Amps: Tube Distinctions Copper Amp fitted with Tungsol KT-150s. Quad 306.

    Cables & Sundries: Mark Grant HDX1 interconnects and digital coaxial cable, plus Mark Grant 6mm UP-LCOFC Van Damme speaker cable. MCRU 'Ultimate' mains leads. Lehmann clone headphone amp with vintage Koss PRO-4AAA headphones.

    Tube Distinctions digital noise filter. VPI HW16.5 record cleaning machine.

    Speakers: Tannoy 15MGs in Lockwood cabinets with modified crossovers. 1967 Celestion Ditton 15.


    Protect your HUMAN RIGHTS and REFUSE ANY *MANDATORY* VACCINE FOR COVID-19!

    Also **SAY NO** to unjust 'vaccine passports' or certificates, which are totally incompatible with a FREE society!!!


  3. #63
    Join Date: May 2011

    Location: Preston, UK

    Posts: 851
    I'm Dominic.

    Default

    It was a chaotic day Marco, and when the SPU was in I did set the bias to 3 I believe. My own cart likes a little less than the downforce would suggest, so the bias was adjusted numerous times. To be honest even my own cart wasnt set up optimally given the time and people here. It was more of a throw it in and lets see what it sounds like kinda day.

  4. #64
    Join Date: Jan 2008

    Location: Wrexham, North Wales, UK

    Posts: 110,012
    I'm AudioAl'sArbiterForPISHANTO.

    Default

    Yup, sure - totally agree. I just thought that I'd mention it. It was the PH head amp more than anything, as I was puzzled why it didn't sound as good the second time around, so it's useful when you can work out why

    Marco.
    Main System

    Turntable: Heavily-modified Technics SL-1210MK5G [Mike New bearing/ETP platter/Paul Hynes SR7 PSU & reg mods]. Funk Firm APM Achromat/Nagaoka GL-601 Crystal Record Weight/Isonoe feet & boots/Ortofon RS-212D/Denon DL-103GL in Denon PCL-300 headshell with Funk Firm Houdini/Kondo SL-115 pure-silver cartridge leads.

    Paul Hynes MC head amp/SR5 PSU. Also modded Lentek head amp/Denon AU-310 SUT.

    Other Cartridges: Nippon Columbia (NOS 1987) Denon DL-103. USA-made Shure SC35C with NOS stylus. Goldring G820 with NOS stylus. Shure M55E with NOS stylus.

    CD Player: Audiocom-modified Sony X-777ES/DAS-R1 DAC.

    Tape Deck: Tandberg TCD 310, fully restored and recalibrated as new, by RDE, plus upgraded with heads from the TCD-420a. Also with matching TM4 Norway microphones.

    Preamps: Heavily-modified Croft Charisma-X. LDR Stereo Coffee. Power Amps: Tube Distinctions Copper Amp fitted with Tungsol KT-150s. Quad 306.

    Cables & Sundries: Mark Grant HDX1 interconnects and digital coaxial cable, plus Mark Grant 6mm UP-LCOFC Van Damme speaker cable. MCRU 'Ultimate' mains leads. Lehmann clone headphone amp with vintage Koss PRO-4AAA headphones.

    Tube Distinctions digital noise filter. VPI HW16.5 record cleaning machine.

    Speakers: Tannoy 15MGs in Lockwood cabinets with modified crossovers. 1967 Celestion Ditton 15.


    Protect your HUMAN RIGHTS and REFUSE ANY *MANDATORY* VACCINE FOR COVID-19!

    Also **SAY NO** to unjust 'vaccine passports' or certificates, which are totally incompatible with a FREE society!!!


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