how to carpet a subwoofer box

{"cid":"91195403","title":"Professional 8 Inch Custom Subwoofer Box , Car Underseat Subwoofer Portable","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/30\/ed\/0fa567c0a80b221aef7c3312d2fd-200x200-1.jpg","attrs":{"Price":"Negotionation","Brand Name":"CR","Model Number":"BB-08AT","Minimum Order Quantity":"Negotionation","Delivery Time":"45 days after receipt of order","Certification":"CE","Place of Origin":"China","Payment Terms":"Western Union, T\/T, L\/C, MoneyGram","Supply Ability":"50000pcs\/month","Packaging Details":"Carton","Color":"black","RMS power":"150w","subwoofer size":"8\"","Amplifier Channel":"MONO","speaker q'ty":"1","Peak Power":"300w"}}

{"cid":"91120536","title":"SINGLE 12 INCH PORTED SUBWOOFER BOX","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/4c\/2a\/cc2c73c5533fedaaac7d2b94723d-200x200-1.jpg","attrs":{"Price":"USD35-45\/PC","Brand Name":"SUB","Model Number":"WB-121K5","Minimum Order Quantity":"100PCS","Delivery Time":"45DAYS","Place of Origin":"zhejiang","Certification":"CE&Rohs","Packaging Details":"CARTON","Payment Terms":"TT","Supply Ability":"3000PCS PER MONTH"}}