P3D2/D4-15

The Rockford Fosgate P3D2-15 and P3D4-15 subwoofers from the legendary Punch P3 series deliver powerful, precise bass and high power handling. With their rugged, anodized aluminum cone, oversized Santoprene surround, and a powerful magnet system, these 38 cm (15-inch) subwoofers deliver deep, punchy bass.

Thanks to the innovative VAST™ (Vertical Attach Surround Technique) technology, the effective usable diaphragm area is increased, enabling exceptionally high air displacement. The 64 mm voice coil with a heat-resistant Nomex® collar ensures high thermal endurance, while the sturdy StampCast basket with integrated ventilation supports reliable heat dissipation.

With an RMS power handling capacity of 600 watts, a maximum power handling capacity of 1,200 watts, and generous linear cone excursion, the Punch P3 subwoofers are ideal for high-performance car audio systems. Thanks to the various dual voice coil options, the subwoofers can be flexibly adapted to different amplifier configurations.

Technical Specifications

General Characteristics

• Manufacturer: Rockford Fosgate

• Series: Punch P3

• Model: P3D2-15 / P3D4-15

• Type: Passive Car Audio Subwoofer

• Nominal diameter: 38 cm (15 inches)

• RMS Power Handling: 600 watts

• Maximum power handling: 1,200 watts

• Sound pressure level (1 W / 1 m): 86 dB

• Voice coils: 2 x 64 mm (2.5 inches)

• Voice coil height: 41.8 mm

• Linear travel (Xmax): ±15.9 mm

• Maximum mechanical deflection: ±28.6 mm

• Effective membrane area (Sd): 894 cm²
  
  

Impedance Variations

• P3D2-15: 2 x 2 ohms dual voice coil

• P3D2-15: Can be configured for 1 ohm or 4 ohms

• P3D4-15: 2 x 4-ohm dual voice coil

• P3D4-15: Can be configured for 2 ohms or 8 ohms
  
  

Materials and Construction

• Diaphragm: Anodized aluminum

• Dust cover: Aluminum

• Bead: Highly Flexible Santoprene

• Basket: Sturdy StampCast metal basket

• Voice coil former: Aluminum

• Voice coil collar: Heat-resistant Nomex®

• Centering: Double centering spider

• VAST™ technology for an increased effective membrane area

• Flex Fit™ basket design with slotted mounting holes

• Integrated ventilation in the area of the centering spider

• Diamond-Turned Aluminum Trim Ring

• Optional protective grille: Rockford Fosgate P2P3G-15
  
  

Dimensions

• Outer diameter, including decorative ring: 410 mm

• Installation diameter: 353 mm

• Installation depth: 193 mm

• Shipping weight: approx. 11.4 kg
  
  

Thiele-Small parameters (TSP)

Rockford Fosgate P3D2-15 (2 x 2 ohms)

• DC resistance (Re): 2 × 1.6 ohms

• Resonance frequency (Fs): 21.7 Hz

• Mechanical Quality (Qms): 7.2

• Electrical quality (Qes): 0.58

• Overall Quality (Qts): 0.54

• Equivalent air volume (Vas): 155.8 liters

• Mass in motion (Mms): 393.1 g

• Voice coil inductance (Le): 4.1 mH

• Force factor (BL): 17.1 N/A

• Voice coil height: 40.4 mm

• Linear stroke (Xmax): ±15.2 mm
  

Rockford Fosgate P3D4-15 (2 x 4 ohms)

• DC resistance (Re): 2 × 3.2 ohms

• Resonance frequency (Fs): 22.4 Hz

• Mechanical Quality (Qms): 4.9

• Electrical quality (Qes): 0.64

• Overall Quality (Qts): 0.57

• Equivalent air volume (Vas): 155.8 liters

• Mass in motion (Mms): 368.6 g

• Voice coil inductance (Le): 6.5 mH

• Force factor (BL): 22.7 N/A

• Voice coil height: 41.8 mm

• Linear travel (Xmax): ±15.9 mm
  
  

Recommended Cases

Enclosed housing

• Recommended net volume: 44.7 liters

• Lower cutoff frequency (-3 dB): 38 Hz

Bass-reflex enclosure

• Recommended net volume: 75.3 liters

• Bass reflex port diameter: 100 mm

• Bass reflex port: 80 cm²

• Bass reflex tube length: 25 cm

• Tuning frequency (Fb): 32 Hz

• Lower cutoff frequency (-3 dB): 30 Hz (P3D2-15) / 31 Hz (P3D4-15)

What's Included

• 1 Rockford Fosgate Punch P3D2-15 or P3D4-15 subwoofer

• Aluminum Trim Ring

• Installation accessories as specified on the manufacturer's packaging

• User and Installation Manual