2x12 cab build

Discussion in 'Cabinets & Speakers' started by Marcomel79, Sep 22, 2021.

  1. Marcomel79

    Marcomel79 Well-Known Member

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    Hi fellow Marshallians im currently building a 2x12 slanted cab for my 18W plexi clone. Im building it on the cheap and i got all the materials from a friend of mine, so the only actual money ive used, its the gas to drive to his workshop. I know this will likely start a shit storm, but ive used MDF for the four walls of the cab, the baffle and back panel will be made of 13mm plywood. Ill be fitting two greenback so i was wondering if it would be better closed back or open back....here are some pics of the build so far...

    4B5C7BDC-DDEF-4BC6-B563-BCE237DC7179.jpeg 291A0B50-C572-4266-A300-0F246BC10A0F.jpeg 98B7582A-F2C9-41EE-90A2-4665E9A7F7C9.jpeg D22814DF-8CC2-4679-809A-6FB0D841F616.jpeg 4D6B8151-C610-4F7E-BCF2-B6CDC5EE7D04.jpeg F6093136-154A-45CE-ADE6-56769E209E9A.jpeg


    Im not sure why the pictures get flipped when i upload them, i apologise for that. I would like to finish it like this.
    A33FE246-E5C3-4459-B324-639CD048FBB3.jpeg
    3,2,1, let the roasting begin!:facepalm:
     
    Last edited: Sep 28, 2021
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  2. Geeze

    Geeze Well-Known Member

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    Good looking design. I'm a closed back guy so of course I'm gonna say closed. I don't get too fussed about the materials as long as I'm pleased with the result.

    Looking forward to your progress.

    Russ
     
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  3. fitz288

    fitz288 Well-Known Yinzer Gold Supporting Member

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    Lookin' good.
    I built a similar 212 for my O20H.
    I was getting low frequency vibrations with a closed back, so I put some doorknob hole saw ports in the back panel and now it sounds fantastic.
     
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  4. RLW59

    RLW59 Well-Known Member

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    Looking good.

    I've had lots of cabs. Plywood, solid pine, MDF, and super crappy genuine old school particle board. I really don't hear significant differences in materials.

    One of the worst sounding cabs I've owned was all ply. Bought it on ebay so I didn't hear it before I bought it. Tried different speakers, tried it without the back panel, tried a half-open back panel, tried it with acoustic stuffing. It was a compact but deep 112 -- I think it was just too small.

    One of the best sounding cabs I have is all MDF. It's a large Line 6 Flextone open back 112 extension cab. The stock speaker was mediocre but the cab sounds amazing with every good speaker I've put in it.

    MDF is heavy, not rugged, and it turns into mush if it gets wet. But in my experience it can sound very good.
    --------------------------
    Open back vs closed back is a completely personal, subjective thing. I prefer open back or ported, but lots of people prefer closed back.

    Put wood cleats around the rear edge (like the ones in the front that are going to hold the baffles) and cut a panel to fit. Try it both ways and see which you prefer.
     
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  5. Biff Maloy

    Biff Maloy Well-Known Member

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    Looks great man. I think that color scheme will look very good.
     
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  6. pedecamp

    pedecamp Well-Known Member

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    Cool! Ive built many a cab, post some pictures when its done, I'm glad you used ply on the front and back and mdf on the sides, although I do the opposite, I find that a mix of materials brings the best sound! :yesway:
     
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  7. Sapient

    Sapient   Silver Supporting Member Gold Supporting Member

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    Looks great! I would take something (you probably know better than I) and push that top piping in flush. Kinda drive me OCD nuts. Lol.

    :dude:
     
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  8. Marcomel79

    Marcomel79 Well-Known Member

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    The cab is gonna match this head i built a few months back..

    7D211ED4-539D-467B-B9AA-D00AD82A66FD.jpeg 859764D2-D841-404C-BFE9-FB5D019E4347.jpeg
     
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  9. Marcomel79

    Marcomel79 Well-Known Member

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    Whats the biggest difference between closed/open back cabs? Besides personal preference.... since im gonna use two greenbacks and they dont have the biggest bottom end i thought i would have it closed for more thump...
     
  10. junk notes

    junk notes Well-Known Member

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    As an example, take a look at the 1x12 combos. They are open backed whilst their matching 1x12 extension cab is a closed back but has a ported front.
    Also in the Studio series 1x12 combos all have differently designed backs, and the mini jube is a 1x12, and not a 1x10 like the SV and SC. :spock:
     
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  11. junk notes

    junk notes Well-Known Member

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    Looks like you are putting them in an oversized 2x12..
    __

    No effects loop, yet?
     
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  12. Marcomel79

    Marcomel79 Well-Known Member

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    Its the same size as the 212 for the SV20H...i guess it looks bigger than it really is...
    i dont do effects, guitar-amp-speaker
     
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  13. BlueX

    BlueX Well-Known Member Silver Supporting Member

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    Nice project, please post more pictures as you proceed!

    Maybe a "three-piece back", so you can use the cab both as open or closed back. I have an oversized 1x12 cab with such a back, and I like that. Different sounds open or closed, but I can't say one is better than the other. Depends on what music I play.
     
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  14. Marcomel79

    Marcomel79 Well-Known Member

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    Thank you! I will.


    thats an interesting idea!
     
  15. Marcomel79

    Marcomel79 Well-Known Member

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    At first i wanted to make a 1x12 with a V-Type like the Sv but my friend convinced me to go 2x12....
     
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  16. junk notes

    junk notes Well-Known Member

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    Dropdown piano hinged and/or detachable Anvil case hinges. :yesway:
     
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  17. Marcomel79

    Marcomel79 Well-Known Member

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    This ones gonna be a basement queen, so no in and out of trunks in the rain!
     
  18. Marcomel79

    Marcomel79 Well-Known Member

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    Dont even start me on that piping.... gave me anxiety when i saw it...
     
  19. Marcomel79

    Marcomel79 Well-Known Member

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    This one is different though...

    2A3C269C-90AB-4A57-9634-90937F70F74E.jpeg
     
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  20. Geeze

    Geeze Well-Known Member

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    I've found the closed back to be tighter - not flabby - as the internal volume is fixed. For pronounced lows I look to the amp circuit as the speaker repeats the sound. At higher volumes the speakers will add some sonic effects. Cab size can affect low end to a degree.

    Russ
     
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