Dust Control System and Shop Vac

Just received the dust control system and am ready to buy a vac. Many seem to have a 1.125" diameter hose and not a 2.25". Can I just find an adapter or should I really try and match hose diameters up? Thanks.

Larger hose = more air flow

More air flow = better dust pickup ie; better performance
Using an adapter would be rather pointless as the overall size of the hose is only as large as the smallest point. Kind of like a chain is only as strong as it’s weakest link.
If you look into the larger “shop vacs” you should find the larger hoses.

Certainly makes sense - thanks very much for your input!