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Thread: What alternatives to Evox MMK?

  1. #1
    Join Date: Jun 2015

    Location: Powys, Wales

    Posts: 334
    I'm Sandy.

    Default What alternatives to Evox MMK?

    I fancy replacing the "C2" amp section caps in my NAP180 as per acoustica mods which recommend 68uF >6V Evox MMK, which are no longer available.
    Any recommendations for a suitably decent quality non-electrolytic alternative?

  2. #2
    Join Date: Aug 2012

    Location: Hartlepool UK

    Posts: 1,640
    I'm Alan.

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    Im not familiar with the circuit on the NAP 180 but I am presuming its the feed back cap you are referring too.
    If so I recommend a mil spec Wet Tantalum 68 or 82uf, even 100uf
    A Vishay 136 or 138D would be nice, used to be made by Sprague

    Alan
    Turntable - Garrard 401/Jelco 750L/Ortofon Kontrapunkt B, Pioneer PLC 590, Micro Sieki MA505 , Denon DL103R - DIY Paradise Phono stage - Reel 2 Reel Studer A810, Otari MX55,Tascam BR20, Revox A77, B77, PR99, TEAC X1000 & 3440, Digital HTPC / Young Dac - Preamp - DIY B4, 821, Power Amp's DIY Avondale NCC300 Mono Block, Speakers Wilmslow Kit Volt BM220.8 / Scanspeak D2905/9500

  3. #3
    Join Date: Jun 2015

    Location: Powys, Wales

    Posts: 334
    I'm Sandy.

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    Quote Originally Posted by 337alant View Post
    Im not familiar with the circuit on the NAP 180 but I am presuming its the feed back cap you are referring too.
    If so I recommend a mil spec Wet Tantalum 68 or 82uf, even 100uf
    A Vishay 136 or 138D would be nice, used to be made by Sprague

    Alan
    Thanks Alan- think that's likely what Les @ Avondale would suggest too. I'll have a look at Mouser...

  4. #4
    Join Date: Apr 2011

    Location: cheltenham

    Posts: 746
    I'm matt.

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    IIRC Les used the Vishay Sprague Tantalex 150D for feedback. I'm not sure why, but I always assumed low leakage tants were favoured.

  5. #5
    Join Date: Jun 2015

    Location: Powys, Wales

    Posts: 334
    I'm Sandy.

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    Quote Originally Posted by fatmarley View Post
    IIRC Les used the Vishay Sprague Tantalex 150D for feedback. I'm not sure why, but I always assumed low leakage tants were favoured.
    Thanks for the added information, Matt. Not ventured inside yet... Les already did the power section mods, I suspect I couldn't afford for him to do the rest at the time...

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