Hi everyone,
I put together the first of my new mtm boxes today, each driver has a separate compartment and the midbass enclosures are 5.5L (without bracing) for a nominally 5L box. I have 1" on a side (actually looking at my pic I think it is 19mm.... hmm) quarter round in the corners top and bottom as glue blocks, and a 1" square piece of MDF in each midbass enclosure to act as an extra surface for the Baffle to glue onto.... the MDF is all 1" (25mm) except the partitions in the middle of the box which are made up of a couple of laminated pieces of 12mm MDF (reason being I had to make the pieces on the tweeter side shorter to allow me to mount the tweeter).
Anyway I was thinking about using some 1/2" dowel cross ways and perhaps top to bottom, but after looking at the boxes I'm thinking maybe no additional bracing is really necessary....
The internal dimentions (in mm) are 151 W X 211 D X 173 H (for each mid encolosure) the overall side length is 443mm not counting the top and bottom MDF pieces, but it effectively has 2 braces at 173mm in the form of the partitions. Oh and there will be a brace between the two partitions in the tweeter compartment as well... you can see one half shoved in in the pic (it is a bit tight and needs to be sanded a little).
So.... In your opinion do I need to add any more bracing, or just run with it the way it is in the pic
Tony.
I put together the first of my new mtm boxes today, each driver has a separate compartment and the midbass enclosures are 5.5L (without bracing) for a nominally 5L box. I have 1" on a side (actually looking at my pic I think it is 19mm.... hmm) quarter round in the corners top and bottom as glue blocks, and a 1" square piece of MDF in each midbass enclosure to act as an extra surface for the Baffle to glue onto.... the MDF is all 1" (25mm) except the partitions in the middle of the box which are made up of a couple of laminated pieces of 12mm MDF (reason being I had to make the pieces on the tweeter side shorter to allow me to mount the tweeter).
Anyway I was thinking about using some 1/2" dowel cross ways and perhaps top to bottom, but after looking at the boxes I'm thinking maybe no additional bracing is really necessary....
The internal dimentions (in mm) are 151 W X 211 D X 173 H (for each mid encolosure) the overall side length is 443mm not counting the top and bottom MDF pieces, but it effectively has 2 braces at 173mm in the form of the partitions. Oh and there will be a brace between the two partitions in the tweeter compartment as well... you can see one half shoved in in the pic (it is a bit tight and needs to be sanded a little).
So.... In your opinion do I need to add any more bracing, or just run with it the way it is in the pic
Tony.
