4 inch bass passive square Cement speaker

Integrated perfusion cement speaker, wooden skeleton lock wooden panel Reflective square bass speakers can be used with 2.1-channel amplifier, allowing you to listen to music when the bass is more thick full Material: Cement, sand, integrated wood panels, sound-absorbing cotton Monomer: Wando 8 ohm bass monomer, power: 30W (monomer repair can be replaced in the future) Size: 20cm (height) x 20cm (length) x20cm (width); wall thickness 1.5cm; Volume: Single speaker volume of about 4.3 liters **◎ banana plug or Y plug are applicable** **◎ passive speaker, need to access the amplifier to use, can be purchased with the store full range speakers Buy** **◎ monomer can be specified with, make up the difference can be**