Rockford-Fosgate Punch P1S4-15

Features:

• 15" Single 4 ohm Punch Stage 1 Subwoofer
• Power Handling:
• Peak: 500 watts
• RMS: 250 watts
• Recommended power range: 125 - 300 watts RMS
• CEA-2031 Compliant
• Klippel Verified
• Flex-fit™ Mounting pattern
• Proprietary spider venting/cooling technique
• StampCast basket with integrated spider venting
• Sturdy 16 gauge compound bend frame geometry
• High modulus Kevlar™ re-inforced paper-pulp cone
• Semi-flexible, PVC removable protective motor cover
• Multi-point high-temp/high-strength neck joint bonding technique
• Tall-profile VAST™ Santoprene™ surround for larger surface area
• Dual tear & fatigue resistant poly-cotton spider with woven tinsel leads
• Fatigue resistant and reduced strain "stitched on" flexible lead wire design
• Proprietary all metal, radially oriented compression input terminal assembly
• Optimized motor magnetics with extended pole and bumped vented backplate
• High temp 2" voice coil w/ spun-laced Nomex™ insulating re-inforcement collar
• Die-Cast aluminum soft-touch painted trim ring allows for optional integrated grill
• Mounting Depth: 6.98"
• Cutout Diameter: 13.85"
• Magnet Weight: 60 oz
• Frequency Response: 18 - 250 Hz
• Xmax: 9mm
• Sensitivity: 87 dB @ 1 watt / 1 meter
• Recommended Ported Enclosure: 2.66ft³
• Recommended Sealed Enclosure: 1.58ft³
• Matching Amplifiers: (one subwoofer)
• Rockford Fosgate R750-1D, @4ohms 
  ✔ Preferred Match
• Rockford Fosgate R500X1D, @4ohms
• Rockford Fosgate P300X1, @4ohms
• Matching Amplifier: (two subwoofers)
• Rockford Fosgate R750-1D, Parallel @2ohms
  ✔ Preferred Match
• Rockford Fosgate R500X1D, Parallel @2ohms
• Rockford Fosgate P1000X1bd, Parallel @2ohms