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Thread: Bargains on ebay?

  1. #3191
    MartinT Guest

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    How much better do they sound over stock, Mark?

  2. #3192
    Join Date: Jul 2010

    Location: North Cambs UK, Earth, Sol, Orion - Cygnus arm of galaxy

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    I'm MadeOfDeadGiantStarsThatExplodedEonsAgo.

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    Better, I couldn't give you percentages The thing is the standard output transistors have pretty low current gain & imho this loads the driver (which happens to be part of the voltage gain stage a little too much.

    So I modified the amps to accept MJ11016 NPN darlingtons as output transistors, which have a current gain of about 1000 in the audio band. There appears to be less crossover distortion as a result. As the driver was more lightly loaded I decreased the value of the resistor that provides the class A power & again there was an improvement.

    Think I'll have to change the op amps to something decent as they frankly deserve it. Only need six of them after all
    Bests, Mark



    "We must believe in free will. We have no choice" Isaac Bashevis Singer

  3. #3193
    MartinT Guest

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    OPA627s are good!

  4. #3194
    Join Date: Jul 2010

    Location: North Cambs UK, Earth, Sol, Orion - Cygnus arm of galaxy

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    I'm MadeOfDeadGiantStarsThatExplodedEonsAgo.

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    I'll use OPAs, but i think the 134? Might be wrong on that score...

    Just secured my third 405 We now have (assuming all is well with this one) six channels of amplification

    That's it, no more power amps needed... I have twenty (yes - 20) channels worth of power amps

    Or if you like, four amps per channel with a 5.1 setup Active everywhere here I come...
    Bests, Mark



    "We must believe in free will. We have no choice" Isaac Bashevis Singer

  5. #3195
    Join Date: Dec 2008

    Location: Yorks

    Posts: 16,643
    I'm Nobody.

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    Bingo i won it, they are actually very thin on the ground & look unappealing to a lot but they are actually good sounding Turntables, keeps within the era i'm obsessed with aswell I'll fit either a Colton 'MC101' or Neat Corporation 'G30' tonearm with Goldring 'G800' cart.. providing it survives the post.

    Leak 'Truespeed' £56.00
    Last edited by Rare Bird; 04-04-2012 at 22:08.

  6. #3196
    Join Date: Jan 2009

    Location: Essex

    Posts: 37,757
    I'm openingabottleofwine.

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    Quote Originally Posted by F307 View Post
    Bingo I won it, they are actually very thin on the ground & look unappealing to a lot but they are actually good sounding Turntables, keeps within the era I'm obsessed with aswell I'll fit either a Colton 'MC101' or Neat Corporation 'G30' tonearm with Goldring 'G800' cart.. providing it survives the post.

    Leak 'Truespeed' £56.00
    Well done André,

    I always liked the look of the old Leak 'Truespeed' - very early '70s.

    Do you intend using it, or will it simply be an objet d'art? I ask, because I'm sure one could do better than either the Colton MC101 or Neat G30 arm.

    Regards
    Barry

  7. #3197
    Join Date: Dec 2008

    Location: Yorks

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    Quote Originally Posted by Barry View Post
    Well done André,

    I always liked the look of the old Leak 'Truespeed' - very early '70s.

    Do you intend using it, or will it simply be an objet d'art? I ask, because I'm sure one could do better than either the Colton MC101 or Neat G30 arm.

    Regards
    Hi Barry
    It's to be used everyday..Re the arm, must be early 70's.. i want the two mentioned but would go for a late Hadcock 'Unipose ' if one came along.. I used to own both those arms & prefered the sound over the arm that a lot chose back then


  8. #3198
    Join Date: Jul 2009

    Location: Hampshire, UK

    Posts: 3,689
    I'm Adam.

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    Quote Originally Posted by F307 View Post
    Bingo i won it, they are actually very thin on the ground & look unappealing to a lot but they are actually good sounding Turntables, keeps within the era i'm obsessed with aswell I'll fit either a Colton 'MC101' or Neat Corporation 'G30' tonearm with Goldring 'G800' cart.. providing it survives the post.

    Leak 'Truespeed' £56.00
    Nice deck Andre - I had my eye on that too!

    If you want to keep it original, they were mostly used with Connoisseur SAU2 arms back in the day.
    Engineers: fixing problems you didn't know you had in ways you don't understand.

  9. #3199
    Join Date: Jan 2009

    Location: Essex

    Posts: 37,757
    I'm openingabottleofwine.

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    Quote Originally Posted by Beobloke View Post
    Nice deck Andre - I had my eye on that too!

    If you want to keep it original, they were mostly used with Connoisseur SAU2 arms back in the day.
    Ah yes! - I was trying to think of the arm identity. Too lazy to dig out my copy of 1971 Hi Fi Yearbook!

    I assume the Truespeed is a 'floating' belt-drive design.

    Are unipivot arms happy on these decks? I seem to rememember there was a fashion for fitting Hadcock unipivot arms onto the Linn LP12, so I guess they can work well together.
    Barry

  10. #3200
    Join Date: Dec 2008

    Location: Yorks

    Posts: 16,643
    I'm Nobody.

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    Quote Originally Posted by Beobloke View Post
    Nice deck Andre - I had my eye on that too!

    If you want to keep it original, they were mostly used with Connoisseur SAU2 arms back in the day.
    Thats correct the one i had many moons ago had the Connoisseur..I'm gonna give that Ariston arm a try first see what it sounds like..

    Quote Originally Posted by Barry View Post
    Ah yes! - I was trying to think of the arm identity. Too lazy to dig out my copy of 1971 Hi Fi Yearbook!

    I assume the Truespeed is a 'floating' belt-drive design.
    Aye they are.. They have transit bolts so were all ok for nay damage in transit..

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