Rockford Fosgate P1S4-15

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The Rockford Fosgate Punch P1S4-15 is a 15-inch subwoofer with a single 4Ω voice coil. The sub features a StampCast steel frame, quick-release compression terminals, a Kevlar fiber reinforced paper cone, and NBR surround (Nitrile Butadiene Rubber). An anodized aluminum voice coil former and spider venting help keep the subwoofer cool.

Product Highlights:

• 15" 4-ohm subwoofer
• Kevlar® reinforced paper cone
• Nitrile butadiene rubber (NBR) surround
• Hybrid StampCast basket provides strength while minimizing weight and resonance
• Vertical Attach Surround Technique (VAST™) increases cone area
• Power range: 50-250 watts RMS (500 watts peak power)
• Frequency response: 23-250 Hz
• Sensitivity: 87.5 dB
• Top-mount depth: 7"
• Sealed box volume: 1.3-3.5 cubic feet
• Ported box volume: 2.66 cubic feet
• Grille not included
• Warranty: 1 year

Specifications:

• Size - 15 -inch
• Impedance - 4 ohms
• Cone Material - Kevlar reinforced paper
• Surround Material - NBR
• Ideal Sealed Box Volume (cubic feet) - 1.58
• Ideal Ported Box Volume (cubic feet) - 2.66
• Port diameter (inches) - 4
• Port length (inches) - 8
• Free-Air - No
• Dual Voice Coil - No
• Sensitivity - 87.5 dB at 1 watt
• Frequency Response - 23 - 250 Hz
• Max RMS Power Handling - 250
• Peak Power Handling (Watts) - 500
• Top Mount Depth (inches) - 7
• Cutout Diameter or Length (inches) - 13 3/4
• Vas (liters) - 191.5
• Fs (Hz) - 23
• Qts - 0.52
• Xmax (millimeters) - 7