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Speaker Box made of odd materials

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Timebomb View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Timebomb Quote  Post ReplyReply Direct Link To This Post Posted: 21 November 2019 at 10:24pm
Originally posted by studio45 studio45 wrote:

I've used spruce ply for a couple of things that had to be super light - with enough bracing it works, and you can achieve a significant weight saving over birch - but this is offset by how easy it is to put dents and scratches in. You could use LineX or something I suppose but then that would add a kilo or two!

My colleague greeef is about to make a 3d printed hollow-wall Hifi/monitor enclosure, and fill the walls with "acoustic concrete" to a recipe of his own devising...It involves shredded car tyres...Now that's going to be a surprisingly heavy little bugger, and should sound excellent, or so we hope :)

I've always wanted to try Poplar plywood, but never been able to get hold of any. In theory, lighter than birch but nearly as hard and tough.

Poplar is a lot softer than birch, but its very flat and stiff, has good torsional strength but it does not take the impacts as well as birch.  Ive done some cabinets in poplar, the good grade void free poplar costs a bit more than birch, but with a polyurea coating its pretty durable and its a good balance of compromise for lighter cabs IMO.  For big heavy tour grade cabs where you tend to wheel them rather
than carry them i think birch / polyurea is the better option, as weight is less of a factor and big cabs tend to take bigger knocks.  

Birch for the outer panels and poplar for all the internal panels and braces would be the best overall though.  

 
James Secker          facebook.com/soundgearuk
James@soundgear.co.uk               www.soundgear.co.uk
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Timebomb Quote  Post ReplyReply Direct Link To This Post Posted: 21 November 2019 at 10:30pm
You get a lot of cheap ply that is poplar core, like the red faced poplar where you get a thin hardwood laminates on the outside, its not as stiff as proper high grade poplar though, tends to have less laminates and voids and un even layering.  

Its worth getting the good stuff its nicer to work with too.
James Secker          facebook.com/soundgearuk
James@soundgear.co.uk               www.soundgear.co.uk
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Post Options Post Options   Thanks (0) Thanks(0)   Quote studio45 Quote  Post ReplyReply Direct Link To This Post Posted: 27 November 2019 at 3:13pm
Oh, now you mention it I did once build a set of X1's out of the red-faced "marine" ply - the customer supplied it - actually probably the worst wood I have ever used! 
Tons of voids in it, with "stuff" in them - like feathers, bark, threads, the sweepings off the shop floor apparently! And glued up with some horrible compound that smelled like hot manure when cut. Very difficult to get a screw to hold in the edge.
I didn't know it was poplar, I really thought that would be a better grade. But it was total bobbar.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote valve head777 Quote  Post ReplyReply Direct Link To This Post Posted: 27 November 2019 at 4:54pm
Originally posted by toastyghost toastyghost wrote:

Originally posted by oren oren wrote:

That Facebook is Insane ,reminds me of some images  I saw before where the military had been developing the huge horn enclosures out of lorries just filled with drivers 


Check the Danley Matterhorn for the peak of silliness. Also the Carreta SomCar things from Brazil.

Perspex is asking for trouble, it cracks super easily. Go polycarbonate if you can afford it!


It was a fun answer to a fun question. I wouldn't actually consider Perspex, having worked with it in the past.
But fun threads turn into, well, unfun threads all to often on here. Which seems to be why most of the interesting contributers seem to have dried up....
Freedom of choice, choice of freedom.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dub Specialist Sound Quote  Post ReplyReply Direct Link To This Post Posted: 27 November 2019 at 5:26pm
Obviously not usable , but looks fun



Musical Roots Reggae Vibration is Life! for music is sound...sound is vibration...vibration is energy... and energy begets life. Therein lies my passion!...MUSIC IS LIFE...
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Post Options Post Options   Thanks (0) Thanks(0)   Quote valve head777 Quote  Post ReplyReply Direct Link To This Post Posted: 27 November 2019 at 7:36pm
See, at least SOMEONE gets it.....
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Post Options Post Options   Thanks (0) Thanks(0)   Quote oren Quote  Post ReplyReply Direct Link To This Post Posted: 28 November 2019 at 10:17am
thats so cool . did you do it 1/1 or is it mini ? ? always thought i could be cool to get some mini cabs and load em with some tang band . a bit like what Ant Paradox has been doing .
Music is nice..
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dub Specialist Sound Quote  Post ReplyReply Direct Link To This Post Posted: 13 December 2019 at 12:34am
Bit of fun my son built...


Musical Roots Reggae Vibration is Life! for music is sound...sound is vibration...vibration is energy... and energy begets life. Therein lies my passion!...MUSIC IS LIFE...
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Post Options Post Options   Thanks (0) Thanks(0)   Quote studio45 Quote  Post ReplyReply Direct Link To This Post Posted: 13 December 2019 at 2:18pm
Those are some really nice square joints he's got on that Weetabix there LOL
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dub Specialist Sound Quote  Post ReplyReply Direct Link To This Post Posted: 13 December 2019 at 3:56pm
hahaha lol , solid as a rock LOL
Musical Roots Reggae Vibration is Life! for music is sound...sound is vibration...vibration is energy... and energy begets life. Therein lies my passion!...MUSIC IS LIFE...
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dub Specialist Sound Quote  Post ReplyReply Direct Link To This Post Posted: 13 December 2019 at 4:04pm
Finished artikal 

his own artwork


Musical Roots Reggae Vibration is Life! for music is sound...sound is vibration...vibration is energy... and energy begets life. Therein lies my passion!...MUSIC IS LIFE...
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dub Specialist Sound Quote  Post ReplyReply Direct Link To This Post Posted: 13 December 2019 at 4:34pm
Musical Roots Reggae Vibration is Life! for music is sound...sound is vibration...vibration is energy... and energy begets life. Therein lies my passion!...MUSIC IS LIFE...
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