Active cardioid build and questions

[frangus]

I have some questions regarding active cardioid speakers like Kii 3 as I'm considering building my own simpler version for the fun of it.

I have a minidsp 2x4 HD and will use passive crossover for the mid-woofer to the tweeter in waveguide so CD will be taken care of by the waveguide above say 1.5-2k. Amp channel 1 for mid/tweeter and amp channel for the cancellation drivers. Active cardioid between 100hz - 1.5-2khz is the aim

Box will be sealed with separate compartments for the main drivers to avoid interaction between them inside the enclosure

Question are as follows:

1. Is minidsp HD able to achieve this with the standard PEQ or do I need FIR?
2. Are side mounted drivers better then a rear mounted driver for the cardioid cancellation?
3. Are there any tricks /traps that I should be aware of?
4. Any other thoughts on the concept above?

Thanks

 

[wonderfulaudio]

Good project. Subscribed.

 

[manninen]

You can do simulations with Vituixcad diffraction tool.
Sure it´s best to measure whole thing by yourself

 

[frangus]

You can do simulations with Vituixcad diffraction tool.
Sure it´s best to measure whole thing by yourself

I will look up that software, thanks