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Thread: Fitting Jelco 750 to Nottingham TT

  1. #1
    Join Date: Mar 2016

    Location: Brighton, UK.

    Posts: 227
    I'm Mike.

    Default Fitting Jelco 750 to Nottingham TT

    Hi all, just got my Nottingham Interspace back from NAS (what a job they did!) and I am slightly confused as to how I fit the tonearm.
    Here's a few pics

    IMG_20171109_211745819 by Mike Van, on Flickr

    IMG_20171109_211813193 by Mike Van, on Flickr

    IMG_20171109_211805248 by Mike Van, on Flickr

    Now I know you put cart in headshell (where, front, middle or back?) and then place needle on a record and get arm parallel with record. But what I'm unsure about is the placement of the tonearm once in its collect (holder), how do I know exactly when to tighten the grub screw to fix the tonearm in place? Or is it just guess work? That is the tonearm should obviously run square alongside the TT edge, but as its an S shaped arm this is not so easy. Hope I'm making myself clear, may'be not, please help! I normally get Audio T to do this, but I've already bought a few carts from them recently and don't need another! Gonna fit my well used - but still some life in it - Denon dl110 to it.

  2. #2
    Join Date: Apr 2016

    Location: souf east for work

    Posts: 513
    I'm paul.

    Default

    Quote Originally Posted by Mikeandvan View Post
    Hi all, just got my Nottingham Interspace back from NAS (what a job they did!) and I am slightly confused as to how I fit the tonearm.
    Here's a few pics

    IMG_20171109_211745819 by Mike Van, on Flickr

    IMG_20171109_211813193 by Mike Van, on Flickr

    IMG_20171109_211805248 by Mike Van, on Flickr

    Now I know you put cart in headshell (where, front, middle or back?) and then place needle on a record and get arm parallel with record. But what I'm unsure about is the placement of the tonearm once in its collect (holder), how do I know exactly when to tighten the grub screw to fix the tonearm in place? Or is it just guess work? That is the tonearm should obviously run square alongside the TT edge, but as its an S shaped arm this is not so easy. Hope I'm making myself clear, may'be not, please help! I normally get Audio T to do this, but I've already bought a few carts from them recently and don't need another! Gonna fit my well used - but still some life in it - Denon dl110 to it.
    Check the travel of the tone arm from the centre of the record to the outside of the record and make sure there is nothing impeding it's movement, when you are happy with its position tighten the grub screw. I don't see it needing to be exact.
    Sony STR 6055 Denon DP80 Stax UA-70 Shure Ultra 500 Zu omen

    Office system, DIY CSS fullrange speakers with aurum cantus G2 ribbons Najda dsp as dac Akai AM-U02 Jvc QL-A51 direct drive turntable
    SAE1000LT

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    System components are subject to change without warning and at the discretion of the owner.

  3. #3
    Join Date: Mar 2016

    Location: Brighton, UK.

    Posts: 227
    I'm Mike.

    Default

    IMG_20171109_215956365 by Mike Van, on Flickr

    Does arm look level?

  4. #4
    Join Date: Mar 2016

    Location: Brighton, UK.

    Posts: 227
    I'm Mike.

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    BTW NAS were amazing in helping me renovate this TT. I bought it off a member of AOS, and it was an early Interspace model, no serial number, with the thicker platter which NAS advised they stopped making as it was uneconomical. The tonearm base had been buggered about with but NAS made do, they actually skimmed the arm base on a lathe for me, as it had been badly scratched, it now looks new. They also advised the original motor was noisy and had a bent spindle, so they replaced that. They originally sent me one of their ready made Jelco 750 arm base, but it wouldn't fit as my TT isn't exactly a regular one. So they said I should send it back to them, and I'm so glad I did, as they wouldn't have discovered the buggered motor or had a chance to make the rest of it look lovely as they did. All this for only 80! Getting the TT back (in the strongest box I 've ever seen) was like getting an early xmas pressie! They cleaned the base too and put one of their NAS interspace plastic logos on it. So its now a lovely slab of black, the silver 750 looks good against it. Yet to play it, will tell thoughts when I do. Currently using a Sony PS-X6, which is pretty damn good as well, absolutely silent motor. Just a shame the tonearm isn't more substantial. NAS also threw in a cart alignment gauge which has been very helpful.

  5. #5
    Join Date: Mar 2016

    Location: Brighton, UK.

    Posts: 227
    I'm Mike.

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    OK, more updates. The arm rest was getting in the way of the arm when I placed the needle on a record, so I had to rotate the tonearm around anti clockwise until the arm rest was clear of the tonearm when playing records. A few pics to explain, still don't know whether I've done this right.

    IMG_20171109_223548140 by Mike Van, on Flickr
    IMG_20171109_223607723 by Mike Van, on Flickr
    IMG_20171109_223632449 by Mike Van, on Flickr

  6. #6
    Join Date: Mar 2016

    Location: Brighton, UK.

    Posts: 227
    I'm Mike.

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    Well, all set up using the NAS gauge, seems to be perfect. Tried it with the DL110, wasn't as good as the sony with the Goldring 2200. So I put the Goldring on the jelco - keeping it on the Sony headshell and adjusting the tonearm weight, and it sounded better, fuller bass than the Denon, and overall smoother sound, there must be quite a few hours on the Dl110 to be fair. The Goldring is a month old. Not sounding a million miles better than the Sony yet, but I've only played a few sides, first impressions are quieter, smoother, clearer, but its not night and day. Still it looks great As we all know it takes a few hours listening to different records to appreciate the difference. That's if I've set it up correctly of course.

  7. #7
    Join Date: Apr 2016

    Location: souf east for work

    Posts: 513
    I'm paul.

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    Quote Originally Posted by Mikeandvan View Post
    OK, more updates. The arm rest was getting in the way of the arm when I placed the needle on a record, so I had to rotate the tonearm around anti clockwise until the arm rest was clear of the tonearm when playing records. A few pics to explain, still don't know whether I've done this right.

    IMG_20171109_223548140 by Mike Van, on Flickr
    IMG_20171109_223607723 by Mike Van, on Flickr
    IMG_20171109_223632449 by Mike Van, on Flickr
    as long as the arm runs into the run off groove with no restrictions you must have it right. I had a similar problem when I fitted Stax arm, but as the Stax arm base has a key in a key way I was unable to rotate the arm base like you can. I had to drill three new holes as the collar is fixed with three screws. When the arm got to the run out groove it was lifting off the record because the antiskate mechanism was fouling on the arm.
    Sony STR 6055 Denon DP80 Stax UA-70 Shure Ultra 500 Zu omen

    Office system, DIY CSS fullrange speakers with aurum cantus G2 ribbons Najda dsp as dac Akai AM-U02 Jvc QL-A51 direct drive turntable
    SAE1000LT

    Garage system another Sony receiver, cassette deck and full range drivers in free air


    System components are subject to change without warning and at the discretion of the owner.

  8. #8
    Join Date: Dec 2008

    Location: Lincolnshire, Home by the Sea

    Posts: 3,696
    I'm Shaun.

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    Got to be honest Mike, I used to use a Denon DL160 and really wasn't impressed with it. Whilst I had it Denon cranked up the price so when I sold it I got as much as I paid for it. I do though love the Nottingham Analogue Interspace which is why I use one. I also had the same problem with the rest on my Origin Live Onyx and had to rotate the arm base slightly so that it would clear the rest whilst playing an LP. I prefer the Interspace to the Space Deck as, as a solid support I find it less compromised than the Space Deck. I never used to like that third support under the Space Deck plinth that is wholly supported on a piece of quarter thread.
    Marantz CD6005 into Audiolab MDAC
    Nottingham Analogue Interspace turntable with Origin Live Onyx tonearm/Denon DL103/Dynavector P75 MkIII phono stage

    Prima Luna Prologue preamp
    Prima Luna Dialogue Premium power amp/EL34

    B&W CM8 S2 loudspeakers

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    "Without this gift of rock and roll we'd all be wasting time"

  9. #9
    Join Date: Mar 2016

    Location: Brighton, UK.

    Posts: 227
    I'm Mike.

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    Quote Originally Posted by paulf-2007 View Post
    as long as the arm runs into the run off groove with no restrictions you must have it right. I had a similar problem when I fitted Stax arm, but as the Stax arm base has a key in a key way I was unable to rotate the arm base like you can. I had to drill three new holes as the collar is fixed with three screws. When the arm got to the run out groove it was lifting off the record because the antiskate mechanism was fouling on the arm.
    I used the gauge that came with the TT (NAS threw it in free among other things!), and its all good now.

  10. #10
    Join Date: Mar 2016

    Location: Brighton, UK.

    Posts: 227
    I'm Mike.

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    Quote Originally Posted by Haselsh1 View Post
    Got to be honest Mike, I used to use a Denon DL160 and really wasn't impressed with it. Whilst I had it Denon cranked up the price so when I sold it I got as much as I paid for it. I do though love the Nottingham Analogue Interspace which is why I use one. I also had the same problem with the rest on my Origin Live Onyx and had to rotate the arm base slightly so that it would clear the rest whilst playing an LP. I prefer the Interspace to the Space Deck as, as a solid support I find it less compromised than the Space Deck. I never used to like that third support under the Space Deck plinth that is wholly supported on a piece of quarter thread.
    I don't know how much difference there is between the Interspace and spacedeck and hyperspace etc but I'm not really one for minor upgrades, I don't seem to hear what audiophiles hear. But like you I like the 1 piece base of this TT, and since getting it back from NAS it looks amazing, they are really nice people. I'm starting to appreciate its sound the more I play it, it turns out more solid sounds, for instance drums have real depth to them. But as in my other threads I have a bass boom problem with my set up/room and the Interspace slightly exacerbates that. Of course not entirely sure I have set it up to play at its best.

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