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  1. #16
    Join Date
    Feb 2008
    Location
    Kingscliff NSW
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    327

    Default

    Funny thing, the yanks rave about baltic birch ply make nearly everything from it ,comes from Russia I understand,I have never ever seen it, only seems to come in 5'x 5' sheets.
    Any clues anybody?

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  3. #17
    Join Date
    Apr 2006
    Location
    Hobart
    Posts
    5,105

    Default

    Quote Originally Posted by andymcw110 View Post
    Hi Graeme

    I'm interested! .... Can you post pix of the speakers or supply a link.

    Cheers

    Andy
    Will try, Andy. I am the only person in Australia without a mobile phone or digital camera, so I'll have to ask a mate to help. Might take a few days...

    Cheers

    Graeme

  4. #18
    Join Date
    Apr 2006
    Location
    Hobart
    Posts
    5,105

    Default

    Hi Andy

    This is my first attempt to include a photo with a posting. Hope it works.

    Graeme

  5. #19
    Join Date
    Apr 2006
    Location
    Hobart
    Posts
    5,105

    Default

    Hi Andy

    It worked. Amazing. Remember, its 30 years old.

    I also drew a cutting plan for the MDF. You can get both speakers from a full sheet (8x4) plus a small sheet (2x4).

    I drew it with paint and its 900 kbt and I cannot yet reduce it below the 100 kb limit on this board. Am not the worlds best geek.

    Graeme

  6. #20
    Join Date
    Jan 2007
    Location
    Perth WA
    Posts
    9

    Thumbs up

    Hi Grahem

    Thanks for going to the trouble of getting the pic online, what would you estimate the internal enclosure size to be and is it a sealed or vented enclosure .... is that the amp on top of the speaker? what is it?

    Interesting colour choice too ... does it scare the children!

    Cheers

    Andy

  7. #21
    Join Date
    Apr 2006
    Location
    Hobart
    Posts
    5,105

    Default

    Hi Andy

    I have emailed cutting plan to you privately.

    I think each box is approximately 88 litres internal.

    For first 25years they were not vented; quite tight uncoloured sound. Then I simulated it using WinISD and decided to add a pair of vents. 110mm diameter from Jaycar. Modified speakers are louder than before, with much more base extension. Richer, more detailed sound.

    Actually I modified one speaker only, then listened. After balancing sound levels I decided I preferred the vented sound and then did the second speaker. The vents are in the bottom.

    Colour is the same as the walls! And I plead the Nuremberg excuse.

    Cheers

    Graeme

  8. #22
    Join Date
    Apr 2017
    Location
    Cockburn Central
    Age
    78
    Posts
    8

    Default It is over priced in Perth

    Quote Originally Posted by andymcw110 View Post
    Hi All

    I d like to build a set of speaker cabinets to suit my refurbished 12" Tannoy Gold (Scottish) speakers.

    Researching, I have read that Baltic Birch plywood is highly recommended but in Australia it's hard to get hold of, I Found some 16mm birch ply in Melbourne @ $60 sheet 1400 x 1200 (would need 3 sheets) but cost effective shipping is hard to sort .... any suggestions on that one?

    I'm looking for 3/4" (19mm)

    Someone suggested Hoop Pine ply.

    your thoughts and suggestions would be appreciated.


    Cheers

    Andy
    The price in Australia is over the top when you find it and most of the shipment has been gone through leaving only the 2nds, I built speaker boxes in the mid 70's for ELECTRO VOICE speakers 12’’ woofers then horns for high and mid –range the cabinet size is around the same as a Marshall 4x12 Cabinet.
    When I bought the ply –back then most timber yards had a good selection of Ply but now they all carry the same poor quality that is overpriced (a Friend in USA buys Baltic birch plywood he pays the equivalent of $46au per sheet of 18mm.
    The only solution in Australia is MDF and the worst thing about that is you have to wear a mask not to breathe in the as it is very dusty to work with. But you get a nice finish and there is a good selection of finishes to give you a good looking set of boxes, the finishes you can use is as simple as paint, or glue on finishes such as veneer or laminate or similar or even contact you buy by the roll and it has an adhesive back and you just have to make sure you don’t get Air bubbles. I could tell you about some fantastic Finishes from a paint company in the USA but with shipping expensive. If I was you I would be using MDF and a Dulux Gloss. (MDF is made to be painted) if you have the skills go to Large automotive chain and buy Duco and you can have an amazing Gloss finish.

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