GM3

Frequency response of HE-400i (2020) with and without grille Frequency response of HE-400i with grille + 3mm felt behind the driver...

Wow that is nuts, looking at the left pic, almost looks like it's 2 inch thick aluminum...! How much would just 5 feet of that weigh...

I have CNC, in order to reduce the splicing between the plates, so I consider using round tubes for machining, of course I don't have...

This is true, IME if you design something yourself it rarely fits on the first try. This is why DIY for something like this is vastly...

Rings? It would be quite a bit more complex though than just rings, since you're going from curve to flat... Either the front of the...

It will vary a lot. If a friend of mine came to me and asked for help with this, and gave me exact dimensions, I would not charge them...

You'll still need to adapt a flat speaker basket to a curved shape. You can try to do this by hand, but it's also not an easy feat to...

Ok yeah if he's going to machine the cylinder using a CNC or whatnot sure, I had imaged he had cylinders available and would cut holes...

IMHO, if you have to ask, you can't afford it. It's a cool solution, but you'll also need a CAD design where you'll provide the exact...

o_Oo_Oo_O Are you going to use the exact same coaxial driver used in the KEF LS60? And if so, can't you also use the same woofers? If...

3D printing adapters would be an obvious and relatively simple option.

I previously built Valeria, a compact bookshelf speaker using pro-audio drivers, namely a 6.5" mid-bass and a 1" horn-loaded compression...

Could it be that not all felts are equal? Wilson audio also uses felt, but it's used much more sparingly. Theirs might also be less...

Integrating the woofers to the cylinder might be a challenge, how would you attach the the drivers to the alu? (flat to curved isn't...

Looks serious. Would need to know more about the goals and intent before offering any advice. I would just say for now that if you...