Does any one know about to create a combo speaker guitar cabinet in Reaktor?
Different options are possible.
You can model it with a bunch of tuned filters
Or build/borrow a convolution processor and use impulse responses taken from guitar cabinets.
or even use neural networks like NI did in guitar rig!
In U/L keyword convolution you'll find this
A bunch of options in the UL, but this one is amazing: TooB Amp Constructor Kit | Entry | Reaktor User Library (native-instruments.com)
Looks like a fun project, resonators are a big help, mimicking a speaker cone is over my head.