SF Super 'Verb BF Conversion?

Discussion in 'Amps and Cabs' started by Artimus82, Oct 3, 2008.

  1. Artimus82

    Artimus82 Member

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    Can this be done?
    Got my eye on a SF Super Verb (70's I'm assuming) and I'm wondering if a guy could convert it to BF like someone would convert a Twin SF to BF.

    Or is it even that big of a difference with the Supers?

    Thanks again.
     
  2. ozspawn

    ozspawn Member

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    Your Super can be bf'd just like any other SF Fender.

    It is potentially simple and cheap to do.

    I say "potentially" because part of the bf process involves opening up stage impedances and removing hi-frequency filtering that sometimes results in parasitic oscillation (uncontrolled feedback). The only way to combat the oscillation is to re-route leads and/or use shielded wire. This process is more complicated and can be expensive.

    Some BF and SF amps may be distinguished from each other by their build quality. Most BF amps have neat and tidy lead dress. As such, parasitic oscillation is not a problem and hi frequency filtering is not required.

    Some SF amps have sloppy lead dress, which results in parasitic oscillation. Fender addressed this problem by adding hi-frequency filter caps to their "SF" circuits. An unintended consequence, however, was that some of the BF shimmer was shaved off the SF's top end. One of the goals of bf'ing is to restore the shimmer. However, in some cases removing these caps causes oscillation.

    You might be lucky and avoid this problem. [​IMG]
     
  3. soldano16

    soldano16 Member

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    I think you need to be careful it's not a late 70's with the linear transformers.

    I also think that the earlier the amp, the less there is to be done.
     
  4. Artimus82

    Artimus82 Member

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    how do I tell if this is the case with the one I'm lookin' at?
    was there a certain year where they started (or ended) that?
    anyone know?
     
  5. Artimus82

    Artimus82 Member

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    Actually, nevermind :p
    I just tried lookin' up the diff in cost between a SF and BF...
    don't think the BF is anywhere close to being inside my budget...
    I'd have to sell off most of my **** to get a hold of one o' those babies.
    We'll see what happens with these SF auctions :)
     
  6. blackba

    blackba Supporting Member

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  7. pfflam

    pfflam Silver Supporting Member

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    What circuit is it?

    Many early SF were the same circuit. And, IMO, the SF circuit is nothing to sneer at. Try your amp out without a sense of feeling the need for BF and see how it sounds. I, for one, actually really really like the early SF circuits . . . I'd say that I like them better than the BF, crisper and more of that Fender shimmer.
     
  8. Artimus82

    Artimus82 Member

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    pfflam, if you like 'em, than the SF is the amp for me!


    *takes the plunge*
     
  9. pfflam

    pfflam Silver Supporting Member

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    Artimus,I know its natural to want to sound like me, but I really think you should weigh your own tastes and take your time, you'll eventually find your own voice.

    ;)
     

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