Getting into the "speaker box" game...

Discussion in 'Miscellaneous [BG]' started by BeeTL, Feb 22, 2014.


  1. BeeTL

    BeeTL

    Joined:
    Sep 26, 2006
    Location:
    Oldsmar, FL
    Disclosures:
    Brad Lowe, Lowe Custom Guitars
    Over the last couple of years I've been intrigued by the DIY speaker building community, and I've noticed there's really no one out there building exceptionally nice cabinets for proven designs, and certainly NOTHING like what I've come up with.

    While it's possible there may come a day when I choose to sell my own branded, fully assembled speaker model, for now I think I've found a simple way to "cut my teeth" in the speaker business.

    At minimum, I'll end up with a really kick-ass home theater setup.

    The plan is to build a cabinet for this:

    http://www.diysoundgroup.com/waveguide-speaker-kits/fusion8-kit.html

    [​IMG]

    That looks like a cross between this:

    http://www.jblpro.com/press/Jan13/JBL_M2.html

    [​IMG]

    ...and a vintage Marshall plexi-style amp:

    [​IMG]
     
  2. BeeTL

    BeeTL

    Joined:
    Sep 26, 2006
    Location:
    Oldsmar, FL
    Disclosures:
    Brad Lowe, Lowe Custom Guitars
    I got the kit in from Erich H at diysoundgroup.com a few weeks back.

    As expected, it was meticulously packed.

    There were even peanuts in the crossover parts box:

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]
     
  3. BeeTL

    BeeTL

    Joined:
    Sep 26, 2006
    Location:
    Oldsmar, FL
    Disclosures:
    Brad Lowe, Lowe Custom Guitars
    Another slow & steady project...with progress pics.

    The box takes shape as the sides and tops cut:

    [​IMG]

    Edge round over:

    [​IMG]
     
  4. Passinwind

    Passinwind Charlie Escher Supporting Member

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    Hi Brad,

    Most of the many DIY cab builders on Talkbass hang out in the Amps Forum. I guess a home theater cab might be a bit of a loose fit there though. ;)

    Best of luck with your build. I'll be particularly interested to see where and how the Marshall tie-in comes into play.
     
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  6. BeeTL

    BeeTL

    Joined:
    Sep 26, 2006
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    Oldsmar, FL
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    Brad Lowe, Lowe Custom Guitars
    Yeah...I didn't want to post in the wrong sub-forum.

    Miscellaneous seemed like the safest bet.

    :)

    The current focus for this project is home theater and possibly studio monitor/small PA use.

    Because of the aesthetics, I'm guessing these will really appeal to musicians.

    Since these use pro-audio drivers with a well-designed crossover, they get loud and stay clean.

    That said, this cabinet doesn't go very low, so a sub is really recommended for most uses.
     
  7. iamlowsound

    iamlowsound

    Joined:
    Nov 30, 2005
    Location:
    Listowel/KW Ontario
    Have you checked out Bill Fitzmaurice designs yet? His are the best in the business and his HT subs are monsters!

    lowsound
     
  8. fdeck

    fdeck Supporting Member

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    Mar 20, 2004
    Location:
    Madison WI
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    HPF Technology: Protecting the Pocket since 2007
    The curves for that design look great, and the parts aren't too expensive. I've been thinking of going DIY for some speakers to install in my preamp factory (aka basement laundry and furnace room). For that use, a high quality monaural system would probably sound better than lower quality stereo for the same overall cost.

    With those sweet dovetails, it'd be a shame to put anything but a clear finish on it.
     
  9. BeeTL

    BeeTL

    Joined:
    Sep 26, 2006
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    Brad Lowe, Lowe Custom Guitars
    Yes, I have.

    In fact, Bill is an active participant on one of the forums where these designs were developed.

    I have a great deal of respect for his perspective on speaker cabinet design and bracing.

    However, these represent a DIY segment that is growing exponentially right now.

    There has been a lot of interest in controlled directivity, horn-loaded designs that use high-quality polyimide compression drivers that offer PA-level sensitivity combined with dome-tweeter smoothness.

    The designs being produced are pretty spectacular from a performance perspective, and are begging for an equally compelling cabinet.

    The Fusion-8 Alchemy was designed by Jeff Bagby, the creator of Passive Crossover Designer and other speaker design software, and a highly respected designer in his own right.
    I agree, and it's possible I may offer a "raw" cabinet for the builder to do an oil, nitro, or shellac finish on.

    Still, hide glue and tolex with string and piping is the go-to for this style box, so it will be the baseline.

    I work with a local painter who does guitars and custom cycles, so bursts, flakes and flames are all within the realm of possibilities.

    :)
     
  10. BeeTL

    BeeTL

    Joined:
    Sep 26, 2006
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    Oldsmar, FL
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    Brad Lowe, Lowe Custom Guitars
  11. BeeTL

    BeeTL

    Joined:
    Sep 26, 2006
    Location:
    Oldsmar, FL
    Disclosures:
    Brad Lowe, Lowe Custom Guitars
    By the way, this is a box joint done on an antique machine...I'm working with an OEM speaker cabinet builder on this project.

    For a variety of technical reasons the plexi vibe was a bust.

    So, without further ado, here are the cabinets in black tolex adhered with hide glue, blackface grillcloth and silver string trim:

    [​IMG]

    [​IMG]
     
  12. bThumper38

    bThumper38 brian ebert Gold Supporting Member

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  13. BeeTL

    BeeTL

    Joined:
    Sep 26, 2006
    Location:
    Oldsmar, FL
    Disclosures:
    Brad Lowe, Lowe Custom Guitars
    Thanks...it's been a fun project!

    I think my next effort will be a matching cabinet for the Fusion-8 MTM, then a box for the Contiuum Subwoofer or similar.

    It should end up being quite a nice little system.
     
  14. David Jayne

    David Jayne

    Joined:
    Jan 16, 2006
    Location:
    Brookfield, CT
    Wow, hugely cool project! Gives me an idea for a mailbox....
     
  15. BeeTL

    BeeTL

    Joined:
    Sep 26, 2006
    Location:
    Oldsmar, FL
    Disclosures:
    Brad Lowe, Lowe Custom Guitars
    Thanks!

    So...here are the cabinets as I received them:

    [​IMG]

    Really well packed and secured:

    [​IMG]

    Here they are with the drivers loaded in:

    [​IMG]
     

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