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First Lightweight Prototype Cabinet

Discussion in 'Amps and Cabs [BG]' started by blackstring, Nov 15, 2012.

  1. blackstring


    Nov 26, 2004
    We finished our first prototype bass cabinet this week. I've been thinking about building one of these for years as an alternative to Indycar parts and NHRA wings and bodywork that we normally build. This was done as a proof of concept project and we are more than happy with the results so far. The cab is loaded with a ten and twelve inch driver(s) plus a horn and an Eminence crossover and is rear ported. The weight is thirty pounds and it sounds huge. We will be doing some experimentation with porting over the next few days to see how it affects the tone and depth. We are already throwing around ideas to bring down the weight and make production a realistic prospect on the near horizon. A 1x12 is also in the works at this point with a target weight of eighteen pounds. Thoughts and ideas are greatly appreciated at this point.
  2. synaesthesia


    Apr 13, 2004
    There is a science to modelling the response based on parameters of loudspeaker drivers that were established by Messrs Thiele and Small and developed by many others on the global platform since those studies were published in the JAE in 1972. It is well worth your while to bone up on the available science rather than take potshots in the dark about port experiments on tone.
  3. Mike Arnopol

    Mike Arnopol Supporting Member Commercial User

    Jan 4, 2005
    Owner of MAS Soundworks
    Oh man---I make composite cabs commercially and I'd love to see what you're doing. I have no problems with new technologies that might even waste mine! Pics, details---are you molding or doing lay ups?

    I'd love to share ideas!
  4. blackstring


    Nov 26, 2004
    We are well aware of Messrs Thiele and Small, thanks. Not really taking potshots in the dark here but thank you kindly for the advice.
  5. shaginwagin


    Apr 2, 2012
    Carbon fiber, right?

    Can we see it?

    Sounds cool...
  6. ... very interesting

    more info & pics please.


    (talk to Mike)
  7. derrico1

    derrico1 Supporting Member

    Apr 12, 2005
    Charlottesville, VA
    I think you need a beta tester based in Virginia. I'm happy to volunteer!
  8. derrico1

    derrico1 Supporting Member

    Apr 12, 2005
    Charlottesville, VA
    Very interesting. So this is a 110+112 cab @ 30#? And a separate design that's 110212?

    I'm curious what sort of tone profile you're aiming for with the design(s): reference-speaker even? superlight box with old school 80-120 Hz thump? mid-peak for articulation on noisy stages?
  9. Passinwind

    Passinwind I Know Nothing Supporting Member Commercial User

    Dec 3, 2003
    Columbia River Gorge, WA.
    Owner/Designer &Toaster Tech Passinwind Electronics
    Definitely looking forward to more details. Don't forget to read and abide by the Commercial User Policy for Talkbass...;)
  10. Chef

    Chef Moderator Staff Member Supporting Member

    May 23, 2004
    Columbia MO
    Staff Reviewer; Bass Gear Magazine
    You're in Nashville?
    You maybe ought to meet Mark Robertson, dukeorock here.
    He's done a bit of cab fab, and would dig what you're doing and maybe have some insights for you.
  11. blackstring


    Nov 26, 2004
    Not sure I qualify as a commercial user yet but thanks for the advice. Did some testing today with a Tonehammer and a Fender TB1200. Pretty flat from low b all the way up. A slight bump in the high mids and nice crisp highs. Very reponsive for a vented cabinet. Responds well to changes in EQ. With the TB1200 you get stupid amounts of volume. Gigging with it tomorrow night in a notoriously bad room. Will update.

    Attached Files:

  12. blackstring


    Nov 26, 2004
    One More

    Attached Files:

  13. Chef

    Chef Moderator Staff Member Supporting Member

    May 23, 2004
    Columbia MO
    Staff Reviewer; Bass Gear Magazine
    That looks very nice.........
  14. Jeff Scott

    Jeff Scott Rickenbacker guru.......... Supporting Member

    Awesome, really! I'd like to see a vertically aligned version of that.
  15. gustobassman

    gustobassman I'm only here for the after party.. Supporting Member

    Mar 31, 2011
    Sandy Eggo
    That looks way cool! Nice work!
  16. Chef

    Chef Moderator Staff Member Supporting Member

    May 23, 2004
    Columbia MO
    Staff Reviewer; Bass Gear Magazine

  17. Jim C

    Jim C Spector#496:More curves than Sophia + better sound Supporting Member

    Nov 29, 2008
    Stunning fit and finish
    Understood that it will be stupid expensive but does make conventional cabs look pale by comparison
    Good luck with R&D
  18. christw

    christw Get low!

    May 11, 2008
    Dayton OH
    I want to be Tesla (tinkerer at Dayton Amp Co)
    Wow, that looks great!
  19. DukeLeJeune

    DukeLeJeune rational romantic mystic cynical idealist Supporting Member Commercial User

    Nov 24, 2008
    Princeton, Texas
    Owner & designer, AudioKinesis; Auth. mfg, Big E (Home Audio only)
    Very nice build, Blackstring! Not looking forward to competing against you (take that as a sincere compliment)!!
  20. Foz


    Jul 26, 2008
    Jax FL USA
    Why ignore baffle step optimization?