Quote Originally Posted by VolvoHeretic View Post



Thanks for that information Sri, I think you mean between faceted and curved round back. As I understand it, an arc is always stronger than a flat surface, so you might be able to get away with 3/8" although that bending plywood sure looks limp. I would still always use 3/4" plywood bracing to help ensure a straight brace, it will be crucial to build these things square and true with NO racking or it will turn into a disaster quick.

I am hoping that the speaker front will be a nice veneer of wood and not just an ugly giant grill cloth stretched over everything.

We could make the detachable port board rectangular to match the horn, we just need some attractive seam cover to hide the joints. I suppose the entire front baffle could be detachable and could be attache to the speaker around the edges, but we would need to make sure nothing rattles at the sound decibels you will be able to achieve.

Since these speakers a designed to be rotatable, we should come up with a turntable for both linked together with belts and pulleys such that they will both always be in unison and aimed at the center of the room. Otherwise you will have to have permanent lasers installed to help with aiming.
VolvoHeretic,

Yes, I meant the faceted (Octagon) shaped one, your drawings helped me immensely. I am leaning towards the Octagon than the bending ply option.

For the Octagon shaped, for vertical braces (7 of them) I am thinking of using either the 2" pine or 1.25" wooden dowel. I am planning to finish with nice veneer front and if possible all sides.

From GM's suggestion, I like to have the entire front baffle removable also, the port removable (nice idea to have an attractive seam). This front baffle removable enables me to use this cabinet for dual 416 drivers in the future, where the bigger horn (511B) will be used on top of the cabinet and with different crossover or a 604.

I love your idea of the turntable

Thank you,
Sri