This bundle contains two of Alpine SWT-10S2 10" Subwoofer (2Ω) SPECIFICATIONS Power Handling CEA-2031 Power Rating: 350 Watts Power Range: 100W - 350W RMS Power Handling: 350 Watts Peak Power Handling: 1000 Watts Dimensions Mounting Depth: 105.5 mm (4-3/16'') Mounting Diameter: 227 mm (8-15/16'') Displacement: -0.02 cu. ft. Added Volume: +0.03 cu. ft. General Frequency Response: 30Hz - 200Hz FEATURES Diaphram Material: Poly-Mica Dust Cap & Pulp-Kevlar Design: 2-Piece Shallow Cone Structure Surround Material: Polyurethane Foam Surround Design: H.A.M.R. Surround Technology Spider Material: Conex Spider with Reinforced Layer Tinsel Leads Design: Progressive Voice Coil Material: Spiral Cut Aluminum Former Design: 65mm Voice Coil with High-Temp 4-Layer SVC Winding Motor Structure Pole Geometry: Compound Radius Curve Configuration: Dual Flare Pole Vent with Airflow Back Plate Frame Material: High Strength Steel Design: Perimeter Venting with Airflow Management System Terminals Layout: Push Terminals Design: 8AWG Gasket Design: Concealed Mount Gasket (Integrated Grille System Ready, US Pat #7,760,900)