Package: 1 EaDual 4ohm voice coils Polypropylene & spruce pulp 2.5" 4-layer voice coil & heat sink Royal blue finish with diamond-cut accents Die-cast aluminum voice-coil heat sink Die-cast aluminum frame Vented pole piece 373oz motor assembly Nonpressed pulp cone Polyether foam surround Dual poly-cotton spiders Nickel-plated 8-gauge compression wire terminals 15" 3,000W max Mounting depth: 8.13"