A Pair of Alpine SWA-12S4 12" Single 4-Ohm Type-E Series Car Subwoofer

General Features:

• A Pair Of Alpine SWA-1254 12" 750W 4 Ohm BASSLINE Series Car Audio Subwoofer
• Power Handling:
  • Peak: 750 watts
  • RMS: 250 watts
• RMS Power Range: 50-250 watts
• Polypropylene & mica damped cone with Progressive Wavelet Rib (PWR) design
• High-excursion poly-foam surround
• Polyester progressive spider
• Two-piece yoke with vented pole for improved air flow and voice coil cooling
• High strength custom steel frame
• 8 Gauge push pin terminals
• 2" Aluminum voice coil
• 60 oz. Single stacked magnet
• Resonance Frequency (Fs): 30 Hz
• Top-mount depth: 5-1/2"
• Sensitivity: 87.6 dB
• Weight: 13 LBS
• Recommended Enclosure Type: Ported / Vented Sealed
  • Minimum Sealed Box Volume: 0.75 cubic feet
  • Optimum Sealed Box Volume: 1.09 cubic feet
  • Maximum Sealed Box Volume: 1.5 cubic feet
  • Minimum Ported Box Volume: 1.5 cubic feet
  • Optimum Ported Box Volume: 1.91 cubic feet
  • Maximum Ported Box Volume: 2.5 cubic feet
  • Top-Mount Depth: 5-1/2"
  • Cutout Diameter: 10-9/16"