Roccaforte Switcher kit from mojo

Discussion in 'Amps and Cabs' started by primerib, Feb 14, 2008.

  1. primerib

    primerib Member

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  2. Kapo_Polenton

    Kapo_Polenton Member

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    Looks cool.. wondering why they didn't go with an added tube stage for more gain. I guess it might just be tweaked values to get more drive out of it? I'll be interested to hear people's opinions.
     
  3. deke99

    deke99 Member

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    I'm very interested in this kit. Doug says that they will be posting clips in the near future. I really want to build an amp and this seems like a really good one in terms of usability. The footswitchable preamps will basically make it a 2 channel amp, or a 1 channel with solo boost, however you want to look at it.
     
  4. Roccaforte Amps

    Roccaforte Amps Member

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    This amplifier has a two stage preamp, and it's single channel.
    There is a trim pot so you can vary the bias of the second
    stage for more gain.
    I didn't want to go high gain with this amp, I was more
    interested in getting the best possible tone out of it,
    and leave room for using clean boost pedals ect....,
    if a more modern type of OD is needed.
    For me, the circuit is just fine.
    I'll be adding some mods for the kit on the forum as time rolls on.
    It's a great amp.
     
  5. Roccaforte Amps

    Roccaforte Amps Member

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    Exactly!
    Now, add a clean boost and it's like a three channel amp
    minus all the extra junk in the chassis to do that.

    :dude
     
  6. joolzriff

    joolzriff Member

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    no to be funny but does it come w/ instructions.....ok now laugh
     
  7. Roccaforte Amps

    Roccaforte Amps Member

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    Yes,
    it comes with both a schematic, and a layout diagram.
     
  8. 85db

    85db Member

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    Doug, are the clips already available?
     
  9. Kapo_Polenton

    Kapo_Polenton Member

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  10. Leonc

    Leonc Wild Gear Hearder Gold Supporting Member

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    Doug, great idea! Trying to get a handle on the basic components/design, so stick a question mark after each item in my list:

    - 2xEL34
    - SS rectification
    - class AB
    - adjustable fixed bias
    - Choke
    - Whose transformers?
    - bias points
    - 1 trimmer to adjust pre-amp bias/gain
    - 2 or 3 12AX7s
    - 2 outputs for 4/8/16 oms cabs (or maybe 4/8/8/16...something like that?)
    - T-M-B, Gain, .... for each channel
    - Master volume
    - Presence
    - must use A/B box to switch 'channels'

    Let us know what's incorrect there, or missing.

    I'm guessing this is very fast, articulate type amp, yes?

    Can you describe the gain levels in terms of any of your existing models?
     
  11. devilrob1979

    devilrob1979 Member

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    For some reason getting any info on this thing has been kind of difficult lately. I'm very interested in buildong one as well.
     
  12. riffmeister

    riffmeister Gold Supporting Member

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    Doug,

    Do you offer an 'already built' version of this amp (i.e., not a kit)?
     
  13. Roccaforte Amps

    Roccaforte Amps Member

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    This is a single channel amp with footswitchable preamp controls.
    Remember your Custom 80, that's how much gain you have
    but you can trim that up or down internally.
     
  14. jiml

    jiml Supporting Member

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    Wanted to get one, but no clips kinda bummed me out. Not that I base my purchases soley on clips, but it's nice to hear something on these. The idea of a great clean amp as a base is cool, and the low gain thang works for me too.
     
  15. Roccaforte Amps

    Roccaforte Amps Member

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    No, but there are many people around the net building kits
    for others. Shouldn't be hard to find someone.
     
  16. Roccaforte Amps

    Roccaforte Amps Member

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    The info is on the mojo site, and I'm only an email away. FWIW
     
  17. 85db

    85db Member

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  18. jiml

    jiml Supporting Member

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  19. 85db

    85db Member

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    Is this amp prime-time ready or should we wait some more?
     

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