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Thread: Glenn Croft MM Phonostage capacitance loading

  1. #1
    Join Date: Nov 2010

    Location: Yorkshire

    Posts: 9,341
    I'm Andrew.

    Default Glenn Croft MM Phonostage capacitance loading

    Guys, I bought Len Gregory's old Croft MM phonostage that he used to voice his range of cartridges. I'm in the process of critically assessing a couple of old Shure Carts on my system and I'm trying to fine tune capacitance loading. Does anyone have an idea of what capacitance loading Glenn used to design into his phonostages? I have no way of changing capacitance on his phonostage but would like an idea of what capacitance load my MM carts are, "seeing".
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  2. #2
    Join Date: Oct 2012

    Location: The Black Country

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    I'm Alan.

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    IME the capacitance is that of the input coax and the miller capacitance of the first valve.

    I would guess about 100pF. Hope that helps.
    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

  3. #3
    Join Date: Jan 2013

    Location: Birmingham

    Posts: 6,829
    I'm James.

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    Quote Originally Posted by Firebottle View Post
    IME the capacitance is that of the input coax and the miller capacitance of the first valve.

    I would guess about 100pF. Hope that helps.
    That seems to ring a bell Alan
    Main system : VPI Scout 1.1 / JMW 9T / 2M Black / Croft 25R+ / Croft 7 / Heco Celan GT 702

    Second System : Goldring Lenco GL75 / AT95EX / Pioneer SX590 / Spendor SP2

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