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Another 2203 Build

Discussion in 'Building the Classics' started by dinkyguitar, Feb 19, 2021.

  1. dinkyguitar

    dinkyguitar Active Member

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    Hi all,

    Started populating the chassis today.

    Planning on making it "mostly" stock although I might install that Granger X-Gain Kit for that 80's metal sound...plus Metro's FX loop.

    Left off with adding the face plates. I'll probably cut the holes out for the FX Loop now as well.

    So far the only thing I had to modify were the mounting holes on all the transformers. Had elongate the holes on one side...not a big deal.

    Front JMP1002.jpg

    Rear JMP1002.jpg

    Top JMP1002.jpg

    More to come...

    dinky
     
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  2. Travis398

    Travis398 Well-Known Member

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    I like it
     
  3. adew1

    adew1 Active Member

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    Looking good!

    Which transformers did you go in the end?
     
  4. neikeel

    neikeel Well-Known Member

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    Is it to be a studio queen? If not you will need transformer mounting brackets;)
     
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  5. dinkyguitar

    dinkyguitar Active Member

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    @adew1
    The transformers are all Heyboer...PT came from mojotone, and the the other 2 came from amp parts direct.

    @neikeel
    Good call on the brackets...I did notice the weight of those things...were is a good place to get the brackets from?
     
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  6. coolidge56

    coolidge56 Well-Known Member Double Platinum Supporting Member

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    Looking good, now remove all those bear claw tube retainers and replace them with spring retainers.
     
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  7. neikeel

    neikeel Well-Known Member

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    Valvestorm have the brackets. Take care to order the longer ones as the shorter ones are designed for smaller transformers or to fit with holes through the corners of the laminations (most vintage and quite a few new ones do not have those holes so I suggest the wide ones, you will be able to slot them in without removing the transformers.
     
  8. dinkyguitar

    dinkyguitar Active Member

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    Out of stock at Valvestorm...
     
  9. Travis398

    Travis398 Well-Known Member

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    Also you have bolts at the bottom of the transformer holding the laminations together I don't think those brackets have a hole to clear them. You should be able to drill holes in the bracket to fit. I know the classic tone brackets already have the hole. But you can't get those any more. So you may have to wait for Valvestorm to get some in stock and customize them to fit.
     
  10. Travis398

    Travis398 Well-Known Member

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    Not sure if the Valvestorm ones have that hole

    Screen Shot 2021-02-20 at 12.49.55 PM.png
     
  11. Travis398

    Travis398 Well-Known Member

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  12. neikeel

    neikeel Well-Known Member

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    The second set of holes are redundant if you have the external clamp bolts.
    Shame they are out of stock.
     
    Last edited: Feb 27, 2021
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  13. dinkyguitar

    dinkyguitar Active Member

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    Finished the turret board today..hopefully I got all the holes & turret locations correct.

    [​IMG]

    There were many holes & turrets in the instructions not being used, so I left them out. I think I put 2 or 3 extra holes so that all the wires would be soldered from the top. (got the idea from @adew1 :thumb:)

    I also have another project that will continue once the weather gets warmer so I can start painting. Not sure which one this is, but I was playing a lot of Dokken songs (trying to play :headbanger:) at the time and decided to make two...so I named one "Tooth" and the other "Nail".

    I built the necks, burnt maple, ebony fretboard, MOP dots, SS frets.....body is from KnE guitars.

    [​IMG]
     
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  14. adew1

    adew1 Active Member

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    Board looks great.

    I didn't put additional mounting brackets on my transformers either, mainly because Valvestorm didn't have them in stock but also because I was satisfied that the combination of M5 bolts and steel chassis made for a very sturdy mounting. If you foresee the possibility of a roadie dropping the amp down a flight of stairs (poor stairs - this amp is heavy!) then maybe it's worth it. Just my 2 centimes. :)
     
  15. dinkyguitar

    dinkyguitar Active Member

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    Started populating the board....putting the wire around the turrets was kind of a pain.

    Made a little make shift holder for the board to hold it in place.

    Turret 1.jpg

    @adew1
    I've been going back and forth about those brackets....yeah, it will probably sit on a shelf looking pretty....we'll see....
     
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  16. dinkyguitar

    dinkyguitar Active Member

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    Made some progress with chassis...Installed the bias resistors.

    Heater wires2.jpg

    Heaters wires were a pain in the you know what...I did the "up and over" method as @adew1 coined the phrase :agreed:. This is my first time, as my Soldano had buss wire going through all the sockets pins like a a set of rail road tracks....no twisting there, just straight runs, but you have to bend out all the socket pins so they all line up...that was a little tricky.

    @coolidge56
    Has does it look? You inspired me with the method.

    Still needs to get soldered into the sockets, but just in case I have something screwy I can do it over. I looked at pics from @adew1 as well as yours to get a feel of wire routing, twists and how high the arcs of the wires going into the sockets should be. i also don't want these wires interfering with anything down the road.

    dinky
     
  17. neikeel

    neikeel Well-Known Member

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    I would twist the wires the sockets too, but looking good.
     
  18. coolidge56

    coolidge56 Well-Known Member Double Platinum Supporting Member

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    That's looking finely crafted keep up the good work!
     
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  19. adew1

    adew1 Active Member

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    @dinkyguitar Looking good. Just a suggestion - mount the 100k resistor on V2 and the jumper across the V3 cathode pins before soldering the heater wires. Access will be fiddly once the heater wires are in place.

    On my build the black heater wires have quite a shallow arc across the preamp sockets. Just enough to comfortably clear the top of pins 4/5. The arc is a bit more pronounced on the power tube sockets, as the profile of these sockets is taller and the pins are longer.

    I like the big washers for the transformers.
     
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  20. dinkyguitar

    dinkyguitar Active Member

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    @adew1
    Good call on the resistor :thumb:

    I'm starting the preamp wires now....thanks for the heads up.
     
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