Rtings.com finally did a full review of the Bose Soundbar 700 with surround speakers and bass module: https://www.rtings.com/soundbar/reviews/bose /soundbar-700-with-speakers-bass-module : r/bose
Bose Bass Module 700 | Bose
Bose Bass Module 700 Wireless Subwoofer for Bose Soundbars, Black - Walmart.com
Bose - Bass Module 700 Wireless Subwoofer - Black
Bose Soundbar 700 review: Voice control can't save this lacklustre soundbar | Expert Reviews