I just ordered a set of these and am very excited to get my feet wet with the waveguide speakers, just on a small scale. I wanted to see how these worked/performed before getting the Fusion-12 Tempests for LCR. I plan on using these Karma's for surrounds.

Instead of building standard rectangular boxes, I wanted to build them with 45's on the backside as these will be sitting sideways up in the corners of the room to save space. I'm pretty sure I figured the math out and got pretty dang close (see attached spreadsheet). The formula for the area of the triangles is =((A9*C9)/2)*B9 or basically base x depth divided by 2 for square inches x height for cubic inches. Should be correct if I remember my 8th grade Geometry right I could have obviously made the airpsace exactly the same but I wanted to use standard imperial dimensions so its not exact. I think it'll be close enough though.

Any thoughts on my box, does the math look correct? Here's a picture of a similar box that is close enough (except the angles are not symmetrical but you get the idea):

I'll keep this updated as I get the speakers but wanted to at least get this started and get input on the basic design.

Thanks all for doing the legwork and making this all possible!

Scott

Karma-8 Box.xlsx 11k .xlsx file

Instead of building standard rectangular boxes, I wanted to build them with 45's on the backside as these will be sitting sideways up in the corners of the room to save space. I'm pretty sure I figured the math out and got pretty dang close (see attached spreadsheet). The formula for the area of the triangles is =((A9*C9)/2)*B9 or basically base x depth divided by 2 for square inches x height for cubic inches. Should be correct if I remember my 8th grade Geometry right I could have obviously made the airpsace exactly the same but I wanted to use standard imperial dimensions so its not exact. I think it'll be close enough though.

Any thoughts on my box, does the math look correct? Here's a picture of a similar box that is close enough (except the angles are not symmetrical but you get the idea):

I'll keep this updated as I get the speakers but wanted to at least get this started and get input on the basic design.

Thanks all for doing the legwork and making this all possible!

Scott

Karma-8 Box.xlsx 11k .xlsx file