The P1-1X12 is a single P1 12 vented enclosure with 250 Watts RMS power handling wired to a 4-Ohm load. The enclosure is constructed with 5/8 MDF, covered in high density carpet, and features quick release compression terminals. Constructed with 5/8 MDF. Proprietary high-flow, low-noise port. High current binding posts. Woofer Quantity: 1. Woofer Size: 12 . Woofer Series: Punch P1 (P1S4-12). Nominal Impedance (ea): 4-Ohm. Internally wired to create a 4-Ohm amplifier load. Power Handling: 250 Watts RMS-500 Watts Max. System Configuration: Vented. Enclosure Material: 5/8 MDF (Medium Density Fiberboard). Speaker Connector: Up to 10 AWG compression terminals. Dimensions: 15.125 x 19.125 x 15.75 -(38.4cm x 48.6cm x 40cm).