I made a bass practice amp out of cardboard

Discussion in 'Amps and Cabs [BG]' started by AlanSanJoseBass, Jun 7, 2021.

  1. LeSonyr

    LeSonyr Supporting Member

    Dec 27, 2012
    You are my new hero.
    jazzbass_5 likes this.
  2. javadog


    Mar 13, 2010
    Yep, that was a great idea. After looking at numerous speaker cabinets with prices in the $800 to $1000 range, I made this "cabinet" out of a cardboard box and an old 12 inch speaker I had..... not great but it works and will help me get by for a while. I used a piece of plywood on the front to mount the speaker, and put a port in the back made from a plastic drink bottle . ABB25B77-2D3F-4DB9-BC08-DB2083A2C3AA.jpeg
    DrMole, andruca, Kirk Bryant and 8 others like this.
  3. twinjet

    twinjet Moderator Staff Member Supporting Member

    Sep 23, 2008
    DrMole, 2tonic, Haroldo and 7 others like this.
  4. 2tonic


    Dec 22, 2015
    @AlanSanJoseBass, now tell the truth.
    When you were a kid, at Christmas time, you had more fun, playing with the boxes your gifts came in, than the toys themselves. Am I right? ;):thumbsup:
    DrMole, db59, andruca and 4 others like this.
  5. Lowbrow

    Lowbrow Supporting Member

    Apr 22, 2008
    Pittsburgh PA!
    Tres cool!
    ellipsis likes this.
  6. micguy


    May 17, 2011
    There are two things that this method of construction lacks:

    1) Stiffness. However, if you use the right amount of glue in the right layers (epoxy or polyurethane) you can make the face layers of corrugated carboard into a matrix - a poor man's fiberglassish thing. the fingerboard on my fretless is wood fibers and glue, and it's VERY stiff. With enough work, and enough layers, you could make something very stiff, but I'm not sure how thick you'd need things to really work well.

    2) Toughness - drop it and it decomposes from the impact damage. This would be helped somewhat by enough glue, but I'm not sure if you'd ever get to the point of equalling something like baltic birch plywood.

    It is an intriguing idea, though - especially if it's something that never gets moved..
    DrMole, 2tonic and Al Kraft like this.
  7. AlanSanJoseBass


    Feb 9, 2020
    Thanks for all of the great comments, pics, and videos. I really enjoyed them. If you are interested in making things out of cardboard, check out a website on cardboard lumber Cardboard Lumber
    That is where I got the idea for this project.
    DrMole likes this.
  8. red_rhino

    red_rhino Artful Dodger Gold Supporting Member

    I've always wanted an uber lightweight 8x10 "fridge" solution. Now I know what to do with my LG refrigerator shipping carton. ;)
  9. Crater


    Oct 12, 2011
    Dallas, TX area
    Cardboard > Styrofoam

    Let's not revisit the "Styrofoam cab" thread, OK? Thanks.
  10. Adienn7


    Jan 26, 2007
    how about contact paper or that liquid proof tape they have for roofs on the outside for weather proofing.. and foam for damping
    Rabidhamster likes this.
  11. lug

    lug Supporting Member

    Feb 11, 2005
    League City, Tx
    I'm going to try to make one out of a very large balloon. Advantage? Low vibration!
  12. i seriously love this.
  13. wcriley


    Apr 5, 2010
    Western PA
  14. fu22ba55

    fu22ba55 Gold Supporting Member

    Apr 16, 2009
  15. chadds


    Mar 18, 2000
    Perfect for the Recycle Tour!!!

    That's Heavy Paper!!
    DrMole and The Owl like this.
  16. Yonni


    Oct 31, 2016
    Why not add a big box to a 210 and paint 6 circles on it?
    2tonic and red_rhino like this.
  17. No one ask about the Thiele parameters yet - don't worry it's coming. Also be prepared when bracing will be asked too - however the corrugation is your defense here.

    Seriously. I love this project.
    DrMole likes this.
  18. When are you going to post a video of you playing through it?
  19. Peteyboy


    Apr 2, 2018
    Los Angeles
    DrMole, tubatodd, 2tonic and 9 others like this.
  20. That's nothing! I had a combo amp that sounded like cardboard!
  21. Primary

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