Cubo Kick

Good morning, I have some 15hpl76s and I'd like them to go as high as possible. I saw that you can reduce the width to increase the frequency. How much should I reduce it?
I also saw a group of people who adapted a 15" woofer to the 12" cubo by modifying the front panel cutout and enlarging the baffle to 40cm with the same dimensions as the 15" cubo cutout (18cm). Is this a good idea?

thanks

I've never looked at the 18LW2400 that way but it's actually a pretty good (Cubo) kick driver (low Le, medium Vas, EBP > 100, good BL).

@ Marcuzzo: Looking at the Qts and Vas of the B&C, it is not really well suited for small rear chambers like Cubo Kick 12, I would adjust Cubo Kick 15 to 45 cm width and roll with it.
The same goes for the adaptation you saw, a 15" driver with a Qts x Vas product nearing that of a the average 12" is going to be happier in that situation than one that is not. With the right driver it is something that could work but it's going to be situation specific as well.

Thank you very much for the quick response!

That's great to hear, I'll go for it! I have one more little question. I'd like to increase the width of the cabinet from 62 cm tot 63,6 cm (so they perfectly fit on my subs), will this have a big effect on the output?

Have a great day,
Jim

It will have a slightly positive, hardly noticeable effect