Building Fender Champ Type Amp

Discussion in 'Off Topic' started by Jackie M, Feb 15, 2017.

  1. Jackie M

    Jackie M New Member

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    My happiest time is in my tiny wood shop rather than in front of guitar amp but after building several guitars I wanted to make a tube amp for a change.
    I didn't need a high output, sophisticated amp. Simple and handy one is the best for my home use so I went with Fender Champ schematic.
    The cabinet design was also based on Champ but I used ash for cabinet (not pine) and used wood bars instead of speaker grill cloth.

    Primary specs are ;
    Cabinet : Solid white ash
    Speaker Baffle : Solid maple/mahogany
    Tubes : Sovtek 6V6GT, 12AX7WA, 5AR4
    Speaker : Jensen P8R (alnico 8")


    Making amp ...

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    Totally point to point wiring
    I'm not knowledgeable about electrical circuit but I could find enough information on-line to build this amp.

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    Tubes are Sovtek from Russia.


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    Next is speaker baffle ...

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    Cutting speaker opening

    I think ply-wood is common for baffle but this time I used solid maple/mahogany that was left over from my semi-hollow Telecaster project.

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    Wooden bars on back are for reinforcement.


    And cabinet ...

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    Cabinet finger joint

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    Baffle, wooden bars, and cabinet will be assembled like this.

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    Cut-out for control

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    Amp is attached this way.

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    Cut-out for front panels

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    Gluing vertical rails

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    Gluing front panels

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    Cutting cabinet corner R

    Next is finishing ...
     
    Last edited: May 28, 2019
  2. Jackie M

    Jackie M New Member

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    [​IMG]
    I used Watco oil to finish cabinet. I repeated applying the oil and #400 wet-sanding 5 times.

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    Baffle painted matte black

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    Gluing baffle to cabinet.

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    Wood bars fixed with screws on baffle

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    Speaker attached on baffle

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    Amp and vacuum tubes installed


    ... and my new amp completed.

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    Last edited: May 28, 2019
    BlackSG91 likes this.
  3. BlackSG91

    BlackSG91 Member

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    Nice job that you did there. The wood cabinet looks very stylish.
     
  4. Jackie M

    Jackie M New Member

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    Thanks.
    Before this, I made the same cabinet using pine wood (... and more vintage finish) because I heard original Fender Champ was pine but I felt the tone was a little bit too soft and dull. So I re-made the cabinet with white ash and the tone became more focused.

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    Last edited: May 28, 2019
    Adam likes this.
  5. Jackie M

    Jackie M New Member

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    [​IMG]
    The Sovtek 6V6GT power tube cracked and burned out.
    I got a new JJ 6V6S. I think JJ is average grade brand but enough for my purpose.

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    My tiny amp is back.
    Slovakian JJ tube sounds cleaner than Russian Sovtek. Not bad.
     
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