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    VTA board NFB tap question for Bob and Roy......

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    Bob Latino
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    Posts : 2411
    Join date : 2008-11-26
    Location : Massachusetts

    Re: VTA board NFB tap question for Bob and Roy......

    Post by Bob Latino on Sat Feb 26, 2011 5:18 pm

    I agree pretty much what Kegger has said. In my own listening experience when altering the feedback resistors (R7 and R8) on the VTA standard gain board which I always take off the 16 ohm tap, I have found that anything between about 3.5K and 10K is OK (to my ears). If I go below 3.5K the VTA driver board tends to make the amp sound "harder" and less tube like. If I go above 10K the bass starts to lose a little definition. The 7.5K taken off the 16 ohm tap IMHO is a good compromise - the amp has that smooth tube sound yet the bass is not sloppy.

    Bob

    Kegger

    Posts : 5
    Join date : 2009-11-16

    Re: VTA board NFB tap question for Bob and Roy......

    Post by Kegger on Sat Feb 26, 2011 5:33 pm

    I'm in agreement with you as well Bob, the standard gain board that 16ohm tap
    is the one to use an say 10k for the resistor, or if going to the 8ohm tap cut that
    resistor in about half or 4.7k if you will.

    On the low gain version the 8ohm tap is the one to use an 7.5k to 15k resistors.

    Take care,
    Keg

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