4-inch full-range passive square Cement speaker

Cube cube has a modern feel One-piece infusion cement speaker, wooden skeleton perfusion, lock wooden panel Reflective square speaker for small space listening https://youtu.be/bY0hRmQQOmw Material: cement, sand, integrated wood__(This time changed to white oak, the color is white, as shown in the film group)__, sound-absorbing cotton Single: Wanyin 8 ohm bullet full-range single unit, power: 30W (can be replaced in the future) Dimensions: 21cm (height) x 20cm (length) x 20cm (width); wall thickness 1.5cm; Volume: a single speaker volume of about 4.3 liters **◎ banana plug or Y plug are applicable** **◎ Passive speaker, need to connect to the amplifier to use** **◎The new version of the front and rear panel screws changed to black, the banana mother plug changed to another specification, does not affect the use** *The screw is shown as out of stock, changed to black on the film*