AXX1515 Case dimensions?

Moin Hab now lie here my AXX1515 and wanted to start rooming around a box on the weekend as well. But I already read here and there that the original building instructions should be more complete!Have you ever built a good housing for the Woofer,or is it free according to the motto the bigger the better? I thank you already for your answers! Greeting Micha PS: In several topics about the AXX 1010 I have read that the Woofer needs a bass lift. Is this the Ba ssboost at the final stage?