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Thread: Nick G modified Lentek Head Amp

  1. #231
    Join Date: Nov 2010

    Location: Yorkshire

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    I'm Andrew.

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    would it help if I posted a picture of mine with the mods?
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  2. #232
    Join Date: Sep 2014

    Location: brighton uk.

    Posts: 4,737
    I'm jamie.

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    yes please
    My System
    John Wood KT88 Amp.
    Paradise Phono Stage
    Sony TTS-8000 Turntable.
    PMAT-1010 MK6 Tonearm.
    Ortofon Cadenza Bronze
    Sony X555ES Cd Player
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  3. #233
    Join Date: Apr 2012

    Location: N E Kent

    Posts: 51,625
    I'm Geoff.

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    Quote Originally Posted by jamie123 View Post
    just reading through this thread and i noticed there appears to be at least 3 versions on the lentek,in the alans post above the second picture shows a mk3 pcb,mine has mk2 printed on it
    It's possible version 1 was a development board that was never put into production.

  4. #234
    Join Date: Sep 2014

    Location: brighton uk.

    Posts: 4,737
    I'm jamie.

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    yep maybe,it would seem from comparing the 2 pcbs thats my transistors are different,the ones in the mk3 are BD380 transistors where as mine are in metal cans,i have 2 marked BF X85 and 2 marked BC461 87742.
    what the difference is and if ones better than another is over my head.
    My System
    John Wood KT88 Amp.
    Paradise Phono Stage
    Sony TTS-8000 Turntable.
    PMAT-1010 MK6 Tonearm.
    Ortofon Cadenza Bronze
    Sony X555ES Cd Player
    Yamaha NS1000m Speakers

  5. #235
    Join Date: Sep 2014

    Location: brighton uk.

    Posts: 4,737
    I'm jamie.

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    im getting a bit confused with regards to replacing these capacitors,nf,pf or uf??
    i need 2 of these,


    and 3 of these,
    My System
    John Wood KT88 Amp.
    Paradise Phono Stage
    Sony TTS-8000 Turntable.
    PMAT-1010 MK6 Tonearm.
    Ortofon Cadenza Bronze
    Sony X555ES Cd Player
    Yamaha NS1000m Speakers

  6. #236
    Join Date: Oct 2012

    Location: The Black Country

    Posts: 6,089
    I'm Alan.

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    The top two are 220pF (0.22nF). The bottom one is 10nF.

  7. #237
    Join Date: Sep 2014

    Location: brighton uk.

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    I'm jamie.

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    Thanks Alan , I had a good read up on cap markings last night and sussed it in the end
    My System
    John Wood KT88 Amp.
    Paradise Phono Stage
    Sony TTS-8000 Turntable.
    PMAT-1010 MK6 Tonearm.
    Ortofon Cadenza Bronze
    Sony X555ES Cd Player
    Yamaha NS1000m Speakers

  8. #238
    Join Date: Sep 2014

    Location: brighton uk.

    Posts: 4,737
    I'm jamie.

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    ive been using a denon ha-500 headamp so the poor little lentek hasn't had a look in,today i recapped it though which is a start
    does anyone know if the wilmas are bipolar?
    My System
    John Wood KT88 Amp.
    Paradise Phono Stage
    Sony TTS-8000 Turntable.
    PMAT-1010 MK6 Tonearm.
    Ortofon Cadenza Bronze
    Sony X555ES Cd Player
    Yamaha NS1000m Speakers

  9. #239
    Join Date: Oct 2012

    Location: The Black Country

    Posts: 6,089
    I'm Alan.

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    The Wimas are none polarised.
    Best type of capacitor to stick in there is either polystyrene or polypropylene dielectric.

    However you only need a low voltage rating of capacitor, the problem will be finding small ones as most of this type of capacitor have large voltage ratings and will be correspondingly large in size.

    Good luck

    PS may be best to try it as is and see what the improvement is so far.
    I love Hendrix for so many reasons. He was so much more than just a blues guitarist - he played damn well any kind of guitar he wanted. In fact I'm not sure if he even played the guitar - he played music. - Stevie Ray Vaughan

  10. #240
    Join Date: Sep 2014

    Location: brighton uk.

    Posts: 4,737
    I'm jamie.

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    Cheers Alan,yep that’s the plan for next weekend
    My System
    John Wood KT88 Amp.
    Paradise Phono Stage
    Sony TTS-8000 Turntable.
    PMAT-1010 MK6 Tonearm.
    Ortofon Cadenza Bronze
    Sony X555ES Cd Player
    Yamaha NS1000m Speakers

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