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[FS] NAP110 parts including H & F transformers, NAPA boards & PSU modules

Discussion in 'd.i.y. classifieds' started by misterc6, Nov 10, 2017.

  1. misterc6

    misterc6 What's he building in there?

    This is a unique opportunity to buy some sought after parts from which you could make a pair of NAP110 mono amplifiers; or a dual mono NAP160/NAP180 type amplifier or a number of other possibilities. Due to the rarity of some of these items prices are non-negotiable unless you want to buy everything listed here. I may split the items so please express any interest you may have but accept that I may wait to get a buyer/buyers for everything. Shipping will be extra at cost.

    [​IMG]IMG_0058 by Malcolm Connah, on Flickr

    2 off Holden & Fisher NAP110 transformers probably from the early 1980s £85 each

    1 pair of NAPA 5/4 amplifier boards, SOA removed, tantalum capacitors replaced £110

    1 off NAPS140/1 PSU module from a NAP110 with capacitors dating from 1988 £25

    1 off NAPS140/3 PSU module from a NAP140 with capacitors dating from 1993 £25

    8 off Vishay 10,000 uF, 50V, 105 deg used in my amplifiers for about 6 months £3.75 each

    NB price in the link below does not include 20% VAT
    http://uk.farnell.com/vishay/mal225641103e3/cap-alu-elec-10000uf-50v-snap/dp/2474584
     
    Last edited: Nov 10, 2017
  2. pm1961

    pm1961 pfm Member

    I know you said "non-negotiable"........ However.............

    FWIW, I am offering £200 for the amp boards and the transformers.

    Did you break the transformers down yourself? Can you confirm you've drawn current through them and they're non-hummers?

    Cheers,

    PM
     
  3. misterc6

    misterc6 What's he building in there?

    My electricity supply here is awful and averages 248v which has given me hum problems in the past with inferior mains transformers.

    These two transformers came to me in two NAP110 amplifiers that I bought earlier this year from a friend and fellow fish. One of the amplifiers had been through my hands previously for service. I initially converted them to a pair of 110 mono amplifiers fitting them with Avondale 110 power supply modules and selling one of the pairs of NAPA boards. I then had the opportunity of building one of the first pairs of Avondale QUDOS (NCC220) amplifier boards which I fitted in place of the Naim NAPA 5/4 boards. Knowing, from previous experience, that Avondale amplifier boards benefit from higher voltage rails than those present in the NAP110s I specified some new transformers from Canterbury Windings which I fitted in place of the H & F ones that I'm now selling. Some of the history of this project can be seen in these threads:

    http://www.pinkfishmedia.net/forum/...nt-new-amplifier-boards-from-avondale.203999/

    http://www.pinkfishmedia.net/forum/...gs-transformer-for-naim-shoebox-cases.204875/

    Yes, I removed the transformers from the 110s myself.
    Yes, before removing them in October the transformers were in almost daily use by myself for most of this year.
    Yes, I can confirm that, whilst I have had them I have had no problems with hum.

    I won't be accepting your offer but will now sell all the items separately should that be of interest to other potential buyers.

    Thanks for your interest.
     
  4. pm1961

    pm1961 pfm Member

    Thanks for the detailed reply.

    Paul
     

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