Amazon.com: Edifier R1700BTs Active Bluetooth Bookshelf Speakers - 2.0 Wireless Near Field Studio Monitor Speaker - 66w RMS with Subwoofer Line Out : Electronics
Edifier R1700BT review | What Hi-Fi?
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? :