passive subwofer speaker box with 10 inches woofers 1, subwoofer speaker without amplifier. 2, 10 inches subwoofer speaker. 1, subwoofer speaker model No ... : 1000A 2, Woofers unit: 10 inchesPower: 55W3, power supply: DC12Vconnect to the car/motorbike/batterycar ... ailiangyayidahotmail.com passive subwofer speaker box / car audio box with 10 inches woofers (1000A)