Tips for Troels's 3WC-12 cabinet please?

[Sebas75003]

If the front face goes from 375 mm to 400 mm, do you really think that the crossover for the tweeter and the medium should be modified (not for bass)?

 

[danny_66]

The effect will be minor.
You can see it for yourself with Basta! Tools, Baffle Designer.
Run it in Windows 8 compatibility mode and use the serial number D4E5-EEA9-A5CE-8BD0 to get it started.
Get the 6RS140 Basta! T/S file from loudspeakerdatabase