CNC copy of an 2328 adapter

[Lee in Montreal]

I have started drafting a 2328 from an actual unit I have in hand. I understand there might be inconsistencies between units and that castings can vary widely. This is a work-in-progress and I am trying to understand the progression rate from throat to mouth.

[1audiohack]

Here's some dimensions to add to your pool of averages.

I have two with an exit width of 3.915" and three at 3.850" and one with a vertical exit at 1.370", three at 1.390" and one at 1.400".

[Lee in Montreal]

Thanks for the info.

Looks like the average width could be 3.875" (3-7/8") and height could be 1.375" (1-3/8")

[Mr. Widget]

Your drawings don't seem to show the greater negative draft of the "balloon" portion just after the round entry. I believe this detail is significant and not at all considered on the simple throat plates used by Westlake on their later horns and by others.

I think your averages seem correct.


Widget

[Lee in Montreal]

That "balloon" irregularity is what puzzles me. I want to transfer the drawing into Solidworks and measure the area progression.

[Ruediger]

That "balloon" irregularity is what puzzles me. I want to transfer the drawing into Solidworks and measure the area progression.

Can You post a few detailed pics of the balloon?

Ruediger

[1audiohack]

I would wager that the "balloon" is intentional. A transitional form to help manipulate a plane or spherical wave front into a fan shape. Also used on more than the 2397 so it is anyones guess to what if any particular horn it is optimized.