Edifier 4001352 R1700BT 66-Watt-RMS Amplified Bluetooth Bookshelf Speaker System - Walmart.com
Edifier R1700BT Bluetooth Bookshelf Speakers - Active Near-field Studio Monitors - Powered Speakers 2.0 Setup Wooden Enclosure - 4 inch Subwoofer - 66 - Reviews | Headphone Reviews and Discussion - Head-Fi.org
All-in-one Bluetooth Bookshelf Speakers | R1700BT -【Edifier】
All-in-one Bluetooth Bookshelf Speakers | R1700BT -【Edifier】
I bought a second set of Edifier 1700BT Bluetooth speakers | Boing Boing
Just got these edifier r1700bt speakers. I love them but im confused on what these 2 buttons do. All I know is they control something called "sound field extension". Anyone know? :