Amazon.com: Sound Town Woofer de marco de aluminio fundido de 21 pulgadas y 1000 W (controlador de baja frecuencia), woofer de repuesto para gabinetes de subwoofer PA/DJ (STLF-21500A) : Instrumentos Musicales
Amazon.com: DS18 PRO-BX21N.1 Car Subwoofer Audio Speaker - 21" in Neodymium Magnet, 6" Voice Coil, 1 Ohm Impedance, 3000W Rms Power, 6000W Max Power - Reinforced Paper Cone for Outstanding Performance : Electronics
Amazon.com: SOUND TOWN 18" RAW WOOFER SPEAKER, 400 WATTS PRO AUDIO PA DJ REPLACEMENT SUBWOOFER LOW FREQUENCY DRIVER (STLF-1890) : Musical Instruments