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?
Printable View
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?
Hi Andy
This is my first attempt to include a photo with a posting. Hope it works.
Graeme
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
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
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
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.