Gibson T-Top replica with a 490R or 490T?

Discussion in 'Pickups' started by andrewflour, Nov 4, 2009.

  1. andrewflour

    andrewflour Senior Member

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    Hail to the Forum! My name is Andrew and I'm an aficionado of this cool place where we can discuss, share, know and disagree on eveything about our les paul guitar! And please,forgive my english, I write from italy

    Said this, I've read here several threads about Gibson T-Top and replicas, because I'm in love with Jimmy Page mid-70's live tone. It came out that modern 490R/T could be the Tbucker if magnet will change to short alnico 5.I know the real deal was polywire, 50mm bobbins lenght, short alnico 5 mag, about 7.8k resistance and not potted.

    Now WHICH 490 could I choose to make this experiment? The R or T one? I know the T has wider poles spacing due to the strings in the bridge position but also read that 490R is very similar in global specs. My luthier will take the wax off the 490 I take, though I'll take it without cover.

    Thanks for everyone who could help me!
     
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  2. andrewflour

    andrewflour Senior Member

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    No idea of what I'm talking about? :slash:
    My question is quite simple: normal length 490r or further apart-poles 490T?
    which of these two is the nearest of the T-Top?
     
  3. MrRhoads

    MrRhoads Senior Member

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    Go for the 490R since it´s lower in output.
    Besides the magnet the 490 and the T-tops/T-bucker are identical.
    T-Tops were around 7,5kOhm +- 0,25
    But i´ve seen T-Tops that been 8,6kOhm.
    But target is 7,5kOhm
     
  4. MrRhoads

    MrRhoads Senior Member

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  5. John the Revelator

    John the Revelator Senior Member

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    Ahhh, nice tip - didn't know that the 490R where possible... How exactly would you alter it?
     
  6. andrewflour

    andrewflour Senior Member

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    Neither me, since I read this here in this forum! By the way, I'll take the 490R with open coils (black), it's easier because they're potted and the wax on the bobbins / downside the cover could represent a problem. Then I'll open the humbucker by loosing the four little screw from the back and change the magnet, being VERY careful to everything there. This process is explained very well on various sites. Check this out!

    Project Guitar :: How To Change Out A Humbucking Bar Magnet

    Then I'll close everything, solder on the pots in the guitar and got my fingers crossed! :D
     
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  7. MrRhoads

    MrRhoads Senior Member

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    A word of advice.
    If you accept pickups without covers there should be plenty 2nd hand.
     
  8. andrewflour

    andrewflour Senior Member

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    I'll take it brand new in a shop and "work" on it.
    By the way, Thanks MrRoards! :thumb:
     
  9. andrewflour

    andrewflour Senior Member

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    Another thing, MrRhoads: did you tried the magnet swap in the 490? How the effect was? Thanks! :)
     
  10. MrRhoads

    MrRhoads Senior Member

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    I did the magnet swap:laugh2:
    I thought i had a 490T but it was a 500T, very different.

    But my guess is that the Alnico 5 would tighten up the sound and give you more treble and some more power as in output.
    Please make a demo if you try it :)
     
  11. MrRhoads

    MrRhoads Senior Member

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    You´re welcome :thumb:
    have a look at this site Humbucker magnets
    They have alnico 5 short magnets.
    I´ve heard something about shortmags in T-Tops but i don´t know for sure.
     
  12. andrewflour

    andrewflour Senior Member

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    Thanks for the link! It could be useful in other swapping moments too :D
    Anyway I think I already have the short Alnico V mag, but I'm not sure. I swap the magnet out of the bridge of my Epi Black Beauty custom. To my surprise it is shorter than my other resting magnet (an A2 and A3) and looks identical to the photo shown on the site. Strange...who knows??
    I'll demo when everything will on the right place, don't worry MrRhoads and MyLesPaul people! :cool:
     
  13. andrewflour

    andrewflour Senior Member

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    UP: Seen the Epi catalog. It's a Alnico V magnet, from an "Alnico Classic HB" by Epiphone. Didn't know they use short magnets too. Good to know this!
     
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  14. MrRhoads

    MrRhoads Senior Member

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    Oh, good to know:naughty:
    My 2 little brothers both got epiphones with Alnico 5 classic humbuckers :)
    One of them will be getting some ceramics from me and i´ll even swap them for him.
    Maybe i should try some short mag.
     
  15. andrewflour

    andrewflour Senior Member

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    I did it! I sounds AWESOME! You were right, MrRhoads. Putting a short Alnico V in a 490R has tight the sound of the pickup: now it's more consistent, mid-rangier,trebly and defined! Definitely yes, this humbucker is really the son of the famous T-top used by Jimmy Page, I can hear its vibe under my fingers in overdrive mode and when using middle selection switch (has a BB #2 in the neck). Mine is about 7,8k, black coils, four conductors (luthier installed phase reversing too, I had a previous push-pull on the guitar) but the output is as strong as the neck BB2 (8,2k). Maybe it's the Alnico V. Great!
    Video demo in these days to come!
    Thanks MrRhoads!
     
  16. MrRhoads

    MrRhoads Senior Member

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    :thumb: Glad to have helped you :D
    A alnico 5 gives you more output than a Alnico 2 magnet so that must be it.
    I´d like to try this in the future.
    Maybe if i can get ahold of some cheap 2nd hand 490´s :)
    But i´ve got some other pickups on the "To Try" list:)
    I´m looking forward to that video demo :D:dude:
     
  17. andrewflour

    andrewflour Senior Member

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    Video demo recorded, hope you like it! This is for the future and for who cares!
    Zeppelin Tones (IMHO). Enjoy :)

    [ame=http://www.youtube.com/watch?v=_ygDKK51UPA]YouTube - T-Top replica in my Jimmy Page custom Les Paul[/ame]
     
  18. MrRhoads

    MrRhoads Senior Member

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    I loved the tone :D
    The video freezes at 1:24 :(
    Gonna try and watch it later and see if it works better.
    Definetly gonna try this myself sometime ;)
     
  19. John the Revelator

    John the Revelator Senior Member

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    Nice indeed - just the mid quack I'm going for! Got an old epi classic HB lying around and a 490R heading my way (swapping for a SD '59 neck I had)
     
  20. MrRhoads

    MrRhoads Senior Member

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    AAaaaaaAAAAaaaaaaAAAAaaaaaah:D
    Finally i saw and heard the whole video:D
    The Immigrant song and Stairway to heaven are my favourite songs with Led Zeppelin.
    Awesome tone in that guitar :D
    REally really loved that tone:D
    Oh, gave it 5 stars at youtube;)
     

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