New Amp Build: V2 Caldera

Discussion in 'The Squawk Box' started by V2, Mar 6, 2016.

  1. V2

    V2 V.I.P. Member

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    I haven't done enough comparison yet to have a solid idea about the sonic differences. The E34L is supposed to have more headroom, which is why I want to try them with the Caldera. Some say that the E34Ls are also more aggressive, which seems to match my initial impression (a bit angrier high end). The amp sounded really good with each power tube, so I'm happy.
     
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  2. Marshall & Moonshine

    Marshall & Moonshine Senior Member

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    Hmm... I'm actually looking to drop a little headroom. The amp is almost there. I wonder if this will get it the rest of the way.
     
  3. V2

    V2 V.I.P. Member

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    depends on what you are after (e.g., more distortion). I could try to help by email/pm if you want.
     
  4. Marshall & Moonshine

    Marshall & Moonshine Senior Member

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    Yeah, I'm looking for an earlier breakup. I'll get in touch with you again when I get off the ship in July.
    Thanks!
     
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  5. bulletproof

    bulletproof aka tarddoggy Premium Member V.I.P. Member

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    Beautiful amps,brother!! Very anxious to hear what they sound like:thumb:
     
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  6. V2

    V2 V.I.P. Member

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    bulletproof - have you heard of Jose Arredondo? The Caldera is in that sonic neighbourhood.
     
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  7. guitar-rocker

    guitar-rocker Senior Member

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    Extremely nice looking amps, and I'm sure without a doubt sonic monsters !
     
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  8. V2

    V2 V.I.P. Member

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    Here's a snippet of a local jazz guitarist, Ryley Kirkpatrick, playing a Les Paul through the Caldera in low-gain mode. Punch switch was in the 'off' position.

    [SC]http://soundcloud.com/v2-jmcd/v2-caldera50-clean-without-punch[/SC]
     
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  9. V2

    V2 V.I.P. Member

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    Low-gain mode with punch engaged:

    [SC]https://soundcloud.com/v2-jmcd/v2-caldera50-clean-with-punch[/SC]
     
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  10. matthew bear

    matthew bear Senior Member

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    That sounds very nice!
     
  11. bulletproof

    bulletproof aka tarddoggy Premium Member V.I.P. Member

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    Really nice tones,right there!! :applause:
     
  12. alexb17

    alexb17 MLP Vendor

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    I haven't even heard the dirty tones yet and I know I want one! Seriously, this is amazing craftsmanship! They look beautiful and sound great so far!

    Alex
     
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  13. V2

    V2 V.I.P. Member

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    Here's a new, different V2 Caldera sitting atop of the rack-mount Phaez Pasadena that I've listed in the classifieds.

    [​IMG]
     
  14. cherrysunburst00

    cherrysunburst00 Senior Member

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    nice !
     
  15. V2

    V2 V.I.P. Member

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    Thanks, Roland. Do you notice anything weird about the Caldera?
     
  16. D'tar

    D'tar Senior Member

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    Toroidal PT and a 6vac transformer?
     
  17. V2

    V2 V.I.P. Member

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    Well the toroid PT is rare but not too weird because they work very well. I had a toroidal OT in this amp for a while too. Those are very uncommon in guitar amps.

    The small iron is a 3H choke, which is pretty standard.
     
  18. RAG7890

    RAG7890 Premium Member

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    John I was also wondering about the use of Toroidal Transformers in Guitar Amps (typically lighter & more efficient as I understand it and I have seen a few done with these).

    Do you have any comments re the tones of an Amp if you use a T OT? I'd guess a T PT would not have an impact but the OT must be another matter (I would think).

    Thanks. :)

    Cheers, Rudi
     
  19. cherrysunburst00

    cherrysunburst00 Senior Member

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    No, I'm embarrassed to say. I've looked and looked but I don't see anything weird
     
  20. V2

    V2 V.I.P. Member

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    I'm no transformer expert, but so far I have had good success with toroidal PTs. I think they can present unique problems (more electrical noise), but I haven't had to do anything special with the ones I've used. Antek sells very inexpensive PTs, but I think these ones by SumR are better (internal shielding, etc). If you face the primary wires away from the OT, there is virtually no magnetic interference.

    My jury is still out on toroidal OTs for guitar amps. I think they are excellent devices, but it might be difficult to built a Marshall-type amp without an OT that distorts the low end (the bandwidth of a toroidal OT is very wide, so they won't colour the sound as much). The 'colourless' characteristic could be seen as an advantage or a disadvantage, depending on your perspective. But the reduced magnetic interference (e.g., with your nearby guitar pups) is clearly an advantage of the toroidal OT...

    The toroidal and EI OTs that I've compared in this amp also have different primary impedances, so it's not a perfect comparison.

    Here's a photo of the amp with toroidal OTs.
    [​IMG]
     

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