Wholesale 20-40W 3 Inch Speaker Unit Subwoofer Home Low Frequency Powerful LoudSpeaker Woofer Steel Cannon Hifi Car Bass Speaker Unit From m.alibaba.com
Multimedia Speaker 8" Inch 4 Ohm 40W Audio Sub Woofer HiFi
Ghxamp 4 Inch 40w Round Subwoofer Speaker Woofer High Power Bass Home Theater 2.1 Subwoofer Unit Crossover Louspeakers Diy 1pc - Speakers - AliExpress
Source Professional Subwoofer 40W Surround Sound Home Theater System Wooden Blue tooth Speaker on m.alibaba.com