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Thread: Help me understand...passive preamps

  1. #11
    Join Date: Jan 2008

    Location: Norfolk, UK

    Posts: 6,258
    I'm BigBobJoylove.

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    Quote Originally Posted by Marco View Post
    P.S Bloody ace avatar of Richard's there, Rob!
    His own work mate.

    Lounge:
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  2. #12
    Join Date: Jan 2008

    Location: Norfolk, UK

    Posts: 6,258
    I'm BigBobJoylove.

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    Apologies to Alan for slight thread hijack, please resume.

    Lounge:
    Samsung QE65QN80F 65" QLED TV
    Echo Link streamer
    RME Audio ADI-2 FS (AK4493) DAC
    XMOS DSD Async
    Emotiva A2+ power amplifier
    Neat Motive SX1 speakers
    Van Damme 4.00mm tour grade speaker cable
    Audiocrast Spreizbar banana plugs
    Chord Clearway XLR interconnects
    Audioquest Crimson USB interconnect
    QED Quartz Reference optical interconnect


    Studio:
    2022 MacBook Pro 14" M1 Pro 10/16/16/16
    SMSL SU-1 DAC
    Modified Fosi P4 preamp
    Adam Audio T5Vs
    Fenton 10" active sub
    Fosi V1.0G integrated amp
    Roxel RBS 300s
    Several small valve preamps

  3. #13
    Join Date: Jan 2008

    Posts: 544

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    An adenda to my first post. Obviously my findings are with NVA power amps which are designed to be used with a passive pre. With power amps designed to be used with an active pre you may find the TVC better than pot or sa based passives. This is due to matching and interface considerations.

  4. #14
    Join Date: Feb 2008

    Location: East Sussex

    Posts: 191
    I'm Alan.

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    No problem & thanks for the response.
    Richard, I am very interested in your reply (notwithstanding my limited understanding). I was sure I remembered seeing some TVCs in you ebay showroom, now I see why they aren't there now.
    It certainly helps me try and weigh up whether a cheap TVC is worth a punt over a good stepped attenuator model. I wish I were in a financial position to weigh it all up for myself, but I'm not. So this is another vote for 'the new way' of buying Hi-Fi.
    Regarding the response of my amps as the volume increases, I must stress it is just my perception. No-one else has ever commented on it. Perhaps bigger amps on the bottom?
    Plenty to think about for now (thanks also Rob), will check in again tomorrow.

  5. #15
    Join Date: Feb 2008

    Location: East Sussex

    Posts: 191
    I'm Alan.

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    Quote Originally Posted by Richard View Post
    An adenda to my first post. Obviously my findings are with NVA power amps which are designed to be used with a passive pre. With power amps designed to be used with an active pre you may find the TVC better than pot or sa based passives. This is due to matching and interface considerations.
    300 posts - congratulations! I may need to think of ditching the top amps to fund a nice P90sa, but I would then certainly want to add A80s in place of A70s.
    However I am wary of losing any of the magic I enjoy at the moment, and I have no way of knowing how much of it is down to the Bi-amp configuration.

  6. #16
    Join Date: Jan 2008

    Location: Wrexham, North Wales, UK

    Posts: 110,938
    I'm AudioAl'sArbiterForPISHANTO.

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    Quote Originally Posted by Shian7 View Post
    There is nothing wrong with my spelling ability you clowns!
    Which is why I wrote:

    And I freakin' edited my response again to take into account his other typo!!
    Eejit!

    I will take criticism from Marco when he learns how to use a soldering iron
    You'll have a bloody long wait then!



    Sorry, Alan, as you were...

    Marco.
    Last edited by Mike; 28-03-2008 at 17:29.
    Main System

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    Paul Hynes MC head amp/SR5 PSU. Also modded Lentek head amp and Denon AU-310 SUT.

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  7. #17
    Join Date: Jan 2008

    Posts: 544

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    Quote Originally Posted by Alan View Post
    300 posts - congratulations! I may need to think of ditching the top amps to fund a nice P90sa, but I would then certainly want to add A80s in place of A70s.
    However I am wary of losing any of the magic I enjoy at the moment, and I have no way of knowing how much of it is down to the Bi-amp configuration.
    Ah! now I know who you are

    Most is down to bi-amp as I told you, what you have in bi-amp is better than two 80's, and better than just two 70's with P90sa.

    Wait until you can afford to trade in the P50 for P90sa. Only then upgrade the amps as and when you want and can afford. Don't move away from bi-amp, retrograde step.

    Anyway I am not here to promote NVA so any question for me then back channel please. Any others can comment at will.

    300 posts 'struth, I should shut up more.

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