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firs pics of my rig build

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tv00 View Drop Down
Old Croc
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Post Options Post Options   Thanks (0) Thanks(0)   Quote tv00 Quote  Post ReplyReply Direct Link To This Post Posted: 04 February 2014 at 9:32am
I think I made my opinion on this subject pretty clear.
I in respect of peoples fine work I think fir ply is not good enough for it.

Fir cabs are not that strong & hard.
They resonate more like a drum when u hit em
They're easy to scratch
They have an uneven surface
They'll give you a lower sale price
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Adam_Iron_Horse Quote  Post ReplyReply Direct Link To This Post Posted: 04 February 2014 at 12:43pm
What is fir?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Father-Francis Quote  Post ReplyReply Direct Link To This Post Posted: 04 February 2014 at 1:10pm
http://www.ebay.co.uk/bhp/timber-fence-boards

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Music is the strongest form of magic.(+45 31879997)blakmanpro@gmail.com, foa@sweetboxaudio.dk
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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: 04 February 2014 at 5:19pm
So is it a total no no for box building , or is this one mans opinion...
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 Gfoster Quote  Post ReplyReply Direct Link To This Post Posted: 04 February 2014 at 6:11pm
I would say 18mm Ply is best for this?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote TONY.A.S.S. Quote  Post ReplyReply Direct Link To This Post Posted: 04 February 2014 at 6:15pm
Years ago, American cabs had a really bad reputation, which is one of the reasons why so many PA companies had their JBL cabs built here. I remember seeing some Altec "Voice of the Theatre" A7 cabs which just fell apart. It seemed that, unlike now, Americans couldn't buy Russian Birch, so they were stuck with Canadian Douglas Fir, which is technically a soft wood. Douglas For shouldn't be confused with Far eastern or Lauan Ply which be similar in appearance.

Edited by TONY.A.S.S. - 04 February 2014 at 6:16pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote app Quote  Post ReplyReply Direct Link To This Post Posted: 04 February 2014 at 6:24pm
Still biggin up the Finnish birch!Althou I enjoy em in the woods as much as I enjoy my birch ply speaker boxLOL
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TONY.A.S.S. View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote TONY.A.S.S. Quote  Post ReplyReply Direct Link To This Post Posted: 04 February 2014 at 7:06pm
Been said before, Finnish is regarded as the best, and the most expensive. Great for production because it is generally softer than Baltic or Russian Birch, and is easier on the cutters. When we were building the TMS range for Turbosound, it was all Finnish although a little thinner. Max was 15mm apart from the 24 which was 24mm. the TSE range used Russian. It could be argued that in spite of being classed as a better ply, Baltic or Russian could have the edge on sound because it's harder and therefore a little less resonant perhaps.

Edited by TONY.A.S.S. - 04 February 2014 at 7:12pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jazomir Quote  Post ReplyReply Direct Link To This Post Posted: 05 February 2014 at 3:02pm
Originally posted by TONY.A.S.S. TONY.A.S.S. wrote:

Years ago, American cabs had a really bad reputation, which is one of the reasons why so many PA companies had their JBL cabs built here. I remember seeing some Altec "Voice of the Theatre" A7 cabs which just fell apart. It seemed that, unlike now, Americans couldn't buy Russian Birch, so they were stuck with Canadian Douglas Fir, which is technically a soft wood. Douglas For shouldn't be confused with Far eastern or Lauan Ply which be similar in appearance.
I remember seeing both JBL & Altec cabs in the early seventies and was not impressed with ply used which in both cases looked like it had sat on a building site in the rain for a few months. Both sets of Altec A7s looked worse than the JBLs (one was painted grey the other varnished or waxed) and it was obvious that both were delaminating and not only at the edges, but the JBLs were in a truly dreadful state and either hadn't been glued/screwed together properly or the whole box was de-laminating but the evidence wasn't yet visible from the outside except that the cabs were wobbly! Also, the JBLs seemed to be made of very thin wood - possibly only 12mm - and didn't look like they would last for any time. Still, major large scale touring was pretty much in its infancy - most bands in the UK were still using WEM systems and Martin et al had just started but they were far superior build wise than the American stuff I saw - I wonder how many company made JBL/Altec cabs from that era are still touring today (I know lots of them were installs, due to my earlier point, but I have seen many pics of old cabs taken from clubs/theatres etc that had also began to fall apart. Many old cabs still around are probably home made as plans were readily available, and probably used better quality materials than the manufacturers themselves).
For sidefills, can we have two enormous things of a type that might be venerated as Gods by the inhabitants of Easter Island, capable of reaching volumes that would make Beelzebub soil his pants.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote SMP Quote  Post ReplyReply Direct Link To This Post Posted: 05 February 2014 at 3:12pm
I  concur with TR on this often US Manufacturers no choice as import of "Russian Birch" was actually banned in the USA IIRC not allowed so they had Poplar or Furniture grade Ply a bit like our "Shutterring"

Some like JbL had there cabs made in Finland for the European market in the past there was a similar issue in Japan also they had a similar supply constraint and some did what JBL did and supply Components for systems built in Euriope

I do not think there still exists such issue around the Globe any more. "Finnish" or "Baltic"  Birchply is just a commodity now available on a global scale
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Post Options Post Options   Thanks (0) Thanks(0)   Quote SMP Quote  Post ReplyReply Direct Link To This Post Posted: 05 February 2014 at 3:14pm
In fact I believe my JBL Studio Mons here are made in Denmark with US Components
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