Thanks to all. I would thought so that the spec disclosed in the website / user manual (40Hz - 40kHz) is for the system: mini + woofer panel.
Just saw the ads in the latest TAS Sept issue.

I'm hoping my 3.7 ordered last month would be assembled soon and before Wendell caught up with orders for the Minis.

BTW, the $1,495 MSRP complete system comes with one or two panel(s) of DMW woofer?