For Crystal Clear Sound! STP Crystal PRO Speaker KitThe STP STPCRPRO comes with an industry-leading 3-layer back wave dispersion pad, made from aluminium foil which will properly disperse those unwanted back waves and won't hold water and rot like many other foam alternatives. The included closed-cell foam rings come in a variety of sizes making them suitable for use in virtually any installation. Sealing drivers-to-door trims, spacers-to-door skins, holding tweeters in place, your imagination is the limit! Features: Designed for the absorption of speaker back wave distortion for high-quality sound Seal drivers to door trims and spacers to door skins Industry-leading 3 layers back wave dispersion pad Multiple-size foam rings are included to suit most common speaker installation size requirements from 200mm to 45mm Closed-cell waterproof foam material, will not absorb water or retain moisture Includes enough material for the installation of a pair of speakers Specifications: Application: Speaker Installation (Pair) Thickness:Acoustic Lenses: 10mmSealing Rings: 10mm Sound Absorption Co-Efficiency: 0.1 - 0.9 (Depending On The Frequency) Mechanical Loss Factor (Frequency of 200Hz @ 20 Degrees Celsius – 0.6mm Thick Steel): 0.2 Operating Temperature Range: -40 ~ +80 Degrees Celsius Ring Sizes: 200mm, 160mm, 141mm, 120mm, 96mm, 66mm, 45mm Hexagon Panel Size: 190mm x 220mm x 15mm Weight: 0.44kg Inclusions: 2x Crystal Backwave 3 Layer Adhesive Pads 2x Speaker Closed Cell Foam Rings (Each With 7 Sizes)
