Yamaha B-3 V-fet restoration

Discussion in 'Yamaha' started by vintagejapan, Feb 18, 2018.

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  1. Vint Age

    Vint Age B-1 With Yamaha

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    Yes indeed and neither have I.
     
    Last edited: Jul 1, 2018

     

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  2. bmanone

    bmanone Active Member

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    Glad you completed your restoration, Looks Great! I hope they give you many more years of enjoyment.

    Also, from your pictures, it looks like you replaced those double diodes. Which ones did you use?
     
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  3. rottalpha

    rottalpha Yamaholic Subscriber

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    so how can it get quieter then?
     
  4. vintagejapan

    vintagejapan AK Member Subscriber

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    Thank you. Understated simplicity. Really like the look also Mark.
     
  5. vintagejapan

    vintagejapan AK Member Subscriber

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    Just a simple "ear to the tweeter" test. more hiss on the B-1 and B-2. My speakers are 92dB sensitivity.
    Saying that from listening position cannot hear any hiss on all 3 Yamaha's.

    Will be running them for a little while before trying to compare with the B-1
     
  6. vintagejapan

    vintagejapan AK Member Subscriber

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    @rottalpha "which Sony?" My 8650 has a issue with the preamp part. Those green unobtainable Sony IC's...
     

     

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  7. vintagejapan

    vintagejapan AK Member Subscriber

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    2X1N4148's for the diodes
     
  8. rottalpha

    rottalpha Yamaholic Subscriber

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    Then I am officially deaf :)
     
  9. rottalpha

    rottalpha Yamaholic Subscriber

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    I was saying MY Sony demons in the shape of a TAN-8550 and it's bride.
    They have bench priority over my B-3 twins...

    ....So I am looking forward to your B-3 listing impressions in the meantime.
     
  10. vintagejapan

    vintagejapan AK Member Subscriber

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    This will be next...hope to get them both sorted. IMG_8012.JPG
     
  11. vintagejapan

    vintagejapan AK Member Subscriber

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    Well it has only been a couple of days but since only replaced the film caps the B-3's didn't need a lot of running in.


    After restoration they play even more open and highs are more detailed with long lasting decays. I listen to a lot of ECM music which the B-3's portray beautifully.
    "Natural Sound" it is the rightfully logo of the Yammies, all the Vfets B-1, B-2, and B-3 are the list coloured amplifiers I posses.

    Comparing with the B-1 the B-3's on BTL mode sound not as warm, guess is personal preference but I prefer them. The bass goes deep and with more punch, driving my S-955III pioneers and the NS-2000 effortlessly. The bass would be my favourite aspect on the B-3's. They never seem to run out of steam and drum kicks punch you hard in the chest. The B-3's are fast, very fast, with fantastic dynamics. They sound more like a Sony TA-N7 but more authoritative. Depending on which speaker you match them I think on BTL mode they come on top of all the Vfet Yammies. They run not hot and I can use them everyday (unlike the B-1 which in summertime struggles here in Australia) Here they are with Luxman C-5000A and NS-2000.
    IMG_9452.JPG
     

     

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  12. rottalpha

    rottalpha Yamaholic Subscriber

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    so you doubled down on the Sony, I see.
     
  13. vintagejapan

    vintagejapan AK Member Subscriber

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