building a super-light cab: what wood?

Discussion in 'Amp Central Station' started by Jupiter, Feb 23, 2020.

  1. W.L.Weller

    W.L.Weller Tele-Holic

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    Another option is making a phase-reversing speaker cable. Tip of one end to the sleeve of the other. The cable I made for this purpose has yellow Plasti-dip on both ends (because I used to have a yellow Ethernet crossover cable back in the OS9 Appletalk days).
     
  2. BobbyZ

    BobbyZ Doctor of Teleocity

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    The really good stuff, like what old Hiwatts were made out of, is special order where I'm at. The big box stores here sell birch plywood wood but it's not the same and uses different core wood, pine or whatever's cheap.
     
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  3. getbent

    getbent Telefied Silver Supporter

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    yes. you can't buy it at home depot, but you can source it if you look. It is expensive and worth it.
     
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  4. printer2

    printer2 Poster Extraordinaire

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    I always take a look to see if anything good is sitting on the shelves.

    Built a guitar out of stuff in the shelves.


    [​IMG]

    Won't do for a guitar top but good enough for a cabinet.

    [​IMG]

    A 12" speaker sized cab, neck for a Tele, poplar and maple.

    [​IMG]

    Laminated and bookended one board to make a Tele body, I still have it sitting.

    [​IMG]

    Quartered and incredibly fine grained.

    [​IMG]

    Back to our regularly scheduled program.



    Will be roadworthy but the point is to make a light cab.
     
    Last edited: Mar 1, 2020
    old wrench and getbent like this.
  5. Steerforth

    Steerforth Tele-Afflicted

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    Get some Sapele BS 1088 with Lloyd’s Register stamp. You will never have a better baffle. I have a bunch of it in the barn for boat projects.

    Paulownia would be my choice. Maybe do some bas relief carving and/or inlay or marquetry if you’re not going to cover it with Tolex.
     
  6. Gfurman

    Gfurman TDPRI Member

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  7. Jupiter

    Jupiter Telefied Silver Supporter

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    I did get some 9mm luan plywood for the front and back panels. I don't know if it's "void-free", but I've never seen a void yet while cutting through it. I guess it's what you might call furniture grade. It was expensive too! Not particularly light, but it's a small cab, and the back will be about 1/2 open.
     
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  8. Jupiter

    Jupiter Telefied Silver Supporter

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  9. Jlwctn

    Jlwctn Tele-Meister

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    I'm sure there has to be some availability for Void-free Baltic Birch.
    I'm in the States, and here it is available in 150cm×150cm sheets (~5'×5').
    Not really Expensive like Unobtanium expensive, but not dirt cheap, either.
    https://www.woodworkerssource.com/search.html?Search=baltic+birch+plywood
     
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  10. Jupiter

    Jupiter Telefied Silver Supporter

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    um yeah, so I'm thinking I'll splurt truck bed coating over it; do you recommend the marquetry before or after that?
     
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  11. Jupiter

    Jupiter Telefied Silver Supporter

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    I'm thinking a toggle like this mounted inside the cab:
    dpdt phase reverse switch.JPG
    I mean, that'd be pretty slick and easy wouldn't it?
     
  12. Steerforth

    Steerforth Tele-Afflicted

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    Always apply truck bed coating after you’ve finished doing any marquetry or inlay. :lol:
     
  13. Jupiter

    Jupiter Telefied Silver Supporter

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    I could artistically smoosh some pork rinds into it before it dries, I guess...
    pork.jpeg
     
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  14. teleaddicted

    teleaddicted Tele-Holic

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    It'd be fine as long as the switch can withstand the operating current and is operated when the amplifier is turned off.

    (100 watt/4 ohm)sqrt=5 amperes
    so my choice would be a 10A switch or more.

    Moreover operating the switch while the amp is on, since you're not guaranteed the 2pdt switch is a real "break-bofore-make" simultaneously on both paths, there could be an instant where both phases are shorted giving instantly zero load on the amp output: not a good idea for solid state amps.
    Just my honest 2 cents fwiw.
     
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  15. Jupiter

    Jupiter Telefied Silver Supporter

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    Thanks for those facts! I do have a kinda big switch, but haven’t checked the specs on it yet.
     
  16. Jupiter

    Jupiter Telefied Silver Supporter

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    So, this wasn’t intended to be a build thread, but since I’ve documented pretty much every project for 10 years...

    Lookee what I found in my wiring box! 10A, DPDT on-off-on toggle. In other words, exactly what I need to make a phase-flipper circuit for this cab. What are the odds?
    27950828-883F-41D3-AE0F-639BA67051FC.jpeg

    I bought it for my pickup winder, but for some reason I used another one.

    Right now I’m gluing in the little runners that my baffles will screw onto.
    AF944E28-BBC4-4386-A6C0-97CBAD4285A4.jpeg

    I couldn’t find truck bed coating spray (well, I could but they want like 80 bucks for one rattle can of it. o_O), so I bought black automotive undercoating spray. Should be tough and somewhat dent-resistant. Sure is ugly-looking though!

    speaker is coming tonight
     
    Last edited: Mar 7, 2020
  17. Informal

    Informal Tele-Holic

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    I did a custom molded sub box for my truck with carbon fiber, It wasn't cheap though, I had leftover material from a custom jetski hull build.
    It was featherlight, and sounded awesome.

    Thanks, now I'm gonna have to go into my attic and see if I have enough material for a 1x12 cab. :lol:
     
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  18. Alamo

    Alamo Doctor of Teleocity

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  19. Jupiter

    Jupiter Telefied Silver Supporter

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  20. Alamo

    Alamo Doctor of Teleocity

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