P1S2/S4-10

The Rockford Fosgate Punch P1 subwoofers impress with powerful bass reproduction, rugged construction, and an excellent price-to-performance ratio. The 25 cm (10-inch) woofers were specifically designed for use in compact sealed and bass-reflex enclosures and are ideal for enhancing the sound quality of existing car audio systems.

The Kevlar-reinforced paper cone, combined with the durable foam surround, ensures precise and controlled bass reproduction. The sturdy steel basket, the generously sized 50-mm voice coil, and the robust drive mechanism ensure reliable performance even at higher volumes.

With a power handling capacity of 250 watts RMS and 500 watts maximum, the Punch P1 Series offers a balanced combination of deep bass, dynamics, and everyday practicality. The subwoofers are available in either 2-ohm or 4-ohm versions, allowing for optimal compatibility with a variety of amplifiers.

Technical Specifications

• Manufacturer: Rockford Fosgate

• Series: Punch P1

• Model: P1S2-10 / P1S4-10

• Type: Passive Car Audio Subwoofer

• Size: 25 cm (10 inches)

• Rated Power Handling (RMS): 250 watts

• Maximum power handling: 500 watts

• Impedance P1S2-10: 2 ohms

• Impedance P1S4-10: 4 ohms

• Voice coils: 1 x Single Voice Coil (SVC)

• Voice coil diameter: 50 mm (2 inches)

• Diaphragm material: Kevlar-reinforced paper diaphragm

• Dust cap: Kevlar

• Bead: Foam

• Basket material: Steel

• Voice coil former: Aluminum

• Centering: Single Spider

• Sound pressure level (1 W / 1 m): 85 dB

• Linear diaphragm stroke (Xmax): ±9 mm

• Maximum mechanical stroke: ±26 mm

• Effective membrane area (Sd): 370 cm²

• Outer diameter with decorative ring: 286 mm

• Installation opening: 232 mm

• Installation depth: 135 mm
  
  

Thiele-Small parameters

• Resonance frequency (Fs): 30 Hz

• DC resistance (Re): 1.8 ohms

• Mechanical quality (Qms): 2.70

• Electrical quality (Qes): 0.75

• Total Quality (Qts): 0.52

• Equivalent air volume (Vas): 39.6 liters

• Mass in motion (Mms): 132.1 g

• Force factor (BL): 7.7 N/A

• Effective membrane area (Sd): 370 cm²

• Voice coil winding height: 28 mm
  
  

Recommended Case

Enclosed housing:

• Recommended net volume: 16.7 liters

• Lower cutoff frequency (F3): 48 Hz

Bass-reflex enclosure:

• Recommended net volume: 39.6 liters

• Bass reflex port diameter: 76 mm

• Bass reflex port cross-sectional area: 45 cm²

• Bass reflex tube length: 20 cm

• Tuning frequency (Fb): 37 Hz

• Lower cutoff frequency (F3): 32 Hz
  
  

What's Included

• 1 Rockford Fosgate Punch P1 25 cm subwoofer (P1S2-10 or P1S4-10)

• 1 x decorative ring

• 1 x User and Installation Manual