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Thread: Jelco 750D sits too low on 1200.

  1. #1
    Join Date: Mar 2016

    Location: Brighton, UK.

    Posts: 3,093
    I'm Mike.

    Default Jelco 750D sits too low on 1200.

    Just attached my 750D to this newly acquired bit of loveliness, its ok, but the cart sits very close to the plinth, bit of a pain when you want to give the styli a quick brush off before cueing, anyone else had this experience with the 750 and 1200/1210 combo?

    IMG_20200821_220831853 by [url=https://www.flickr.com/photos/145505522@N02/]

    Here is arm whilst playing, nice and level I think you'll agree.
    IMG_20200821_213414729 by [url=https://www.flickr.com/photos/145505522@N02/]

    IMG_20200821_213340112 by [url=https://www.flickr.com/photos/145505522@N02/]
    Current system 1210 GR. CDP - Meridian G08. Amp -Sugden A21I - Sig. Wharfedale Lintons.

  2. #2
    Join Date: Oct 2010

    Location: Devizes, Wiltshire.

    Posts: 1,446
    I'm Nigel.

    Default

    Can’t you just raise the arm rest a little?

  3. #3
    Join Date: Mar 2016

    Location: Brighton, UK.

    Posts: 3,093
    I'm Mike.

    Default

    Quote Originally Posted by vinylspinner View Post
    Can’t you just raise the arm rest a little?
    I could if I fixed something under it, but as it is it just falls , it sits loosely in its holder, thinking about I'm not sure I have the tonearm exactly where it should be as with the arm rest raised the stylus cannot touch the record at the start of the LP - nearest the record edge as it hits the arm rest! Hopefully the pics will explain it better!

    IMG_20200822_142636279 by [url=https://www.flickr.com/photos/145505522@N02/]

    IMG_20200822_142631538 by [url=https://www.flickr.com/photos/145505522@N02/]

    IMG_20200822_142654027 by [url=https://www.flickr.com/photos/145505522@N02/]
    Current system 1210 GR. CDP - Meridian G08. Amp -Sugden A21I - Sig. Wharfedale Lintons.

  4. #4
    Join Date: Oct 2010

    Location: Devizes, Wiltshire.

    Posts: 1,446
    I'm Nigel.

    Default

    The arm rest should have a small grub screw to lock it, perhaps it is missing. The second photo looks better, just release the collar locking screw and turn the arm to the right a little and re tighten.

  5. #5
    Join Date: Feb 2020

    Location: Fife, Scotland

    Posts: 160
    I'm Gordon.

    Default

    The fit of your Jelco looks to be very low as mounted on the Technics arm board, which is what I believe may be causing a fundamental problem.

    Jelco (and others) produced a 10mm spacer ring for this very purpose, ie: lifting the whole arm assembly into a more versatile position. Once the ring is fitted (may require longer securing screws), the arm / cartridge will end up higher leaving more space for you to give the stylus 'a quick brush' as required.

    This also allows you to make the necessary adjustments to both the arm rest and the cueing device by using an appropriate allan key in the very small grub screws, as advised by Nigel.

    If you fit a spacer ring, or make any of these adjustments, don't forget to re-check all cartridge specifications prior to playing a disc again.

    Good luck.
    Technics SL1000R, DynavectorXV1t, Garrard 401, Jelco SA750LB, Decca Reference, ATVM750SH, AT33Mono, Hana Umami Red, Reimyo CDP777, EarYoshino 912, Ear Yoshino 509s, JBLK2 SL5800s, ART Dram interconnects / speaker cables.

  6. #6
    Join Date: Jan 2009

    Location: Norwich

    Posts: 2,814
    I'm Hugo.

    Default

    The important thing is that the arm is at the correct height for optimal VTA, and that appears to be good. That cartridge is quite tall, so sitting close to the turntable's top plate when the arm is in its rest is not unusual. If it bothers you, just raise the arm rest clip, as advised by Nigel earlier.
    Last edited by Ammonite Audio; 22-08-2020 at 18:31.

  7. #7
    Audio Al is offline Pishanto Specialist & Super-Daftee
    Join Date: May 2012

    Location: Dagenham Essex

    Posts: 11,215
    I'm Allen.


  8. #8
    Join Date: Jan 2009

    Location: Norwich

    Posts: 2,814
    I'm Hugo.

    Default

    Quote Originally Posted by Audio Al View Post
    This Jelco arm is already set at the correct height, so there is no need for any spacer to lift the mounting collar.

  9. #9
    Join Date: Mar 2016

    Location: Brighton, UK.

    Posts: 3,093
    I'm Mike.

    Default

    Thanks to all replies, as Hugo said the arm is set at the right height, raising it would make it too high to be parallel to the platter. The arm was misaligned, I have now moved it to the right a bit, and it is much better. Playing some 80s house now - Mr fingers and it is quite special, Direct drive really excels with beat driven music. I love this turntable! It came with an Ammonite armboard, which looks exactly the same as the original, which is great, luckily it was a Jelco fit!

    IMG_20200822_194125827 by [url=https://www.flickr.com/photos/145505522@N02/]

    IMG_20200822_194114753 by [url=https://www.flickr.com/photos/145505522@N02/]
    Current system 1210 GR. CDP - Meridian G08. Amp -Sugden A21I - Sig. Wharfedale Lintons.

  10. #10
    Join Date: Mar 2016

    Location: Brighton, UK.

    Posts: 3,093
    I'm Mike.

    Default

    Quote Originally Posted by vinylspinner View Post
    The arm rest should have a small grub screw to lock it, perhaps it is missing. The second photo looks better, just release the collar locking screw and turn the arm to the right a little and re tighten.
    Hi Nigel, I've had that arm about 3 years and I never noticed that! Set to the right height now, much better. I've still got the 401 by the way, yet to get it in a decent plinth though! Will do soon.
    Current system 1210 GR. CDP - Meridian G08. Amp -Sugden A21I - Sig. Wharfedale Lintons.

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