{"product_id":"tropo-18-18-inch-3-inch-voice-coil","title":"Tropo 18 18-Inch 3-Inch Voice Coil","description":"The CT Sounds Tropo 18 Inch 650W RMS Car Subwoofer is engineered to provide substantial bass performance without a high price tag. It allows users to experience significant atmospheric pressure from CT Sounds subwoofers, whether for filling in the low-end of a stereo system or creating a powerful auditory experience.\n\nConstructed with quality in mind, this 18-inch subwoofer features a robust 3-inch, 4-layer high-temperature copper voice coil, a double-slug Y30 grade optimized motor, and a durable stamped steel basket. It also includes a flexible high-density mega foam surround with dual white stitching, dual round weaved copper tinsel leads, and a premium grade poly-cotton blend spider pack. The composite paper cone is reinforced with 3% carbon fiber for enhanced rigidity and performance.\n\nBoasting a conservative RMS power rating of 650 Watts and a peak power handling of 1300 Watts, the Tropo 18 is designed to be a balanced blend of affordability and performance. Its T\/S parameters, including an Fs of 22.3 Hz and an Xmax of 13.5 mm, indicate its capability for deep bass reproduction. Enclosure recommendations are provided for both flat response (SQ) and boomer (SPL) curves, with suggested sealed box volumes of 4 cu ft and ported box volumes ranging from 5.25 to 6.5 cu ft, tuned to 28 Hz.","brand":"CT Sounds","offers":[{"title":"Default Title","offer_id":52687561523512,"sku":"TROPO-18-D2","price":189.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/664190652.webp?v=1784885106","url":"https:\/\/store.motormia.co\/products\/tropo-18-18-inch-3-inch-voice-coil","provider":"MOTORMIA","version":"1.0","type":"link"}