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Rockford Fosgate

Punch P2D2-8 / P2D4-8

8" (20cm) Subwoofer

Technical Highlights

  • Power RMS 250 watts, impedance D2 or D4.
  • Kevlar fiber reinforced paper membrane, VAST technology.
  • StampCast basket, integrated spider ventilation, PVC magnetic cover.
  • More technical details
Normal price €159,00
Normal price €159,00 Selling price €159,00
5% discount with prepayment
inkl. VAT , possibly plus shipping
Impedance: D2 (2x2 Ohm)
Only a few left in stock (1 pieces available)
In stock
Apr 5, - Apr 6,
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Normal price €159,00
Normal price €159,00 Selling price €159,00

Punch P2D2-8 / P2D4-8 by Rockford Fosgate

Punch P2D2-8 / P2D4-8 is an 8 inch (200 mm) Subwoofer from Rockford Fosgate with 250 Watts RMS and 500 Watts Max. It features a Kevlar fiber reinforced paper diaphragm and VAST technology with up to 25% larger diaphragm area. The StampCast basket with integrated spider ventilation, a dual linear spider with embedded 16 AWG lead wires, and custom 4 mm² nickel-plated push terminals are included. A high-temperature voice coil with spun Nomex reinforcement collar, extended pole shoe, and compact, ventilated back plate complete the design. A textured PVC magnet cover and a diamond-cut aluminum cast ring are included; an optional grille insert is available. Mounting depth 120.8 mm, cutout diameter 181 mm, voice coil diameter 57.7 mm, magnet weight 2.06 kg, and displacement 1.2 liters; available as D2 (2x2 Ohm) and D4 (2x4 Ohm), suitable for closed and bass reflex enclosures.

Features
  • 8 inch (200 mm) Subwoofer
  • 250 Watts RMS
  • 500 Watts Max
  • Available as D2 (2x2 Ohm) and D4 (2x4 Ohm)
  • Kevlar fiber reinforced paper diaphragm
  • VAST technology with up to 25% larger diaphragm area
  • StampCast basket with integrated spider ventilation
  • Dual linear spider with embedded 16 AWG lead wires
  • Custom 4 mm² nickel-plated push terminals
  • High-temperature voice coil with spun Nomex reinforcement collar
  • Extended pole shoe and compact, ventilated back plate
  • Textured PVC magnet cover
  • Diamond-cut aluminum cast ring, optional grille insert
  • Mounting depth 120.8 mm
  • Cutout diameter 181 mm
  • Voice coil diameter 57.7 mm
  • Magnet weight 2.06 kg
  • Displacement of the woofer 1.2 liters
  • Suitable for closed and bass reflex enclosures
Technical specifications
  • Shipping weight 1.38 kg
  • D2 (2x2 Ohm) variant:
    • Nominal impedance dual 2 Ohm
    • Voice coil type dual voice coil
    • Qts 0.46
    • Qms 5.40
    • Xmax 7.8 mm
    • SPL 83 dB (1 W/1 m)
    • Fs 39.6 Hz
    • Qes 0.51
    • Vas 9.9 liters
    • Re 3.40 Ohm
    • Le 2.9 mH
    • Sd 221 cm²
    • Closed enclosure volume 6.5 liters
    • Bass reflex enclosure volume 18.4 liters
  • D4 (2x4 Ohm) variant:
    • Nominal impedance dual 4 Ohm
    • Voice coil type dual voice coil
    • SPL 83 dB (1 W/1 m)
    • Fs 43 Hz
    • Re 6.90 Ohm
    • Sd 221 cm²
    • Qts 0.52
    • Qes 0.58
    • Qms 5.40
    • Vas 9.9 liters
    • Xmax 7.7 mm
    • Le 4.3 mH
    • Closed enclosure volume 6.5 liters
    • Bass reflex enclosure volume 18.4 liters

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Frequently Asked Questions about Punch P2D2-8 / P2D4-8


What are the performance features of the Rockford Fosgate Punch P2D2-8 Subwoofer?

The Rockford Fosgate Punch P2D2-8 Subwoofer is equipped with an RMS power of 250 watts and a maximum power of 500 watts. With a mounting depth of 120.8 mm, it features a dual voice coil type with a nominal impedance of Dual 2-ohm. The Kevlar-reinforced paper cone ensures impressive bass reproduction, and the VAST technology increases the cone area by up to 25%. These features not only protect the speaker but also significantly enhance sound quality. The voice coil has a diameter of 57.7 mm, the magnet weighs 2.06 kg, and the displacement of the woofer is 1.2 liters.

What enclosure types are suitable for the Rockford Fosgate P2D2-8?

Both sealed and bass reflex enclosures are suitable for the Rockford Fosgate P2D2-8 Subwoofer. The recommended sealed enclosure volume is 6.5 liters, and the bass reflex enclosure volume is 18.4 liters. The specific design, such as the VAST technology that increases the cone area by 25%, and the StampCast basket with integrated spider ventilation, makes the P2D2-8 particularly flexible in use. The enclosure volume plays a crucial role in bass quality and resonance, which is why it is important to adhere to the recommended volume specifications for optimal performance.

What are the differences between the P2D2-8 and P2D4-8 models?

The main differences between the P2D2-8 and P2D4-8 Subwoofers from Rockford Fosgate lie in the impedance. The P2D2-8 has a dual voice coil with 2x2 ohm, while the P2D4-8 offers a dual voice coil with 2x4 ohm impedance. The differences in impedance affect compatibility with various amplifier circuits. Additionally, some specifications vary slightly, with both models featuring the same cone area of 221 cm² and the VAST technology, which increases the cone area by up to 25%.

How is the Punch P2D2-8 Subwoofer installed?

The installation of the Punch P2D2-8 requires careful preparation regarding the installation depth and cutout diameter. With an installation depth of 120.8 mm and a cutout diameter of 181 mm, it is important to mount the Subwoofer in a compatible enclosure. The StampCast basket with integrated spider ventilation facilitates installation. Make sure that the wiring is compatible with the 4mm² nickel-plated push terminals. The positioning of the Subwoofer in the vehicle can significantly affect the sound. Experiment with placement to achieve optimal bass reproduction.

What technical advantages does VAST technology offer?

The VAST technology from Rockford Fosgate, used in the Punch P2D2-8 Subwoofer, stands for 'Vertical Attach Surround Technique'. This technology increases the effective diaphragm area by up to 25%, resulting in increased bass output and improved sound quality. The special attachment of the surround edge achieves a larger diaphragm area without the need for a larger chassis. This allows for more efficiency and pressure, essential for bass lovers and those who desire peak performance without the installation compromise of a larger Subwoofer.

What role does the voice coil play in the Punch P2D2-8?

The voice coil in the Punch P2D2-8 plays a crucial role in handling high power levels and heat dissipation. The Subwoofer is equipped with a high-temperature resistant voice coil and a spun Nomex reinforcement collar. This increases durability and resilience, which are important when high electrical and thermal loads occur. Combined with a diameter of 57.7 mm, the voice coil is designed to deliver distortion-free sound at high volumes. It is a key element for the performance of the Subwoofer.

How does the StampCast basket improve the performance of the P2D2-8?

The StampCast basket of the Punch P2D2-8 Subwoofer from Rockford Fosgate features integrated spider ventilation that contributes to the effective cooling of the voice coil. This technical innovation improves thermal management and reduces the risk of overheating and performance loss. With increased stability and precise guidance of the moving parts, it enables the transmission of the highest sound quality. Even under extreme conditions, the basket does not develop deformations or vibrations that could compromise the sound, making it the ideal choice for performance-oriented audio systems.

Are the P2D2-8 Subwoofers compatible with all vehicle types?

The compatibility of the Rockford Fosgate P2D2-8 Subwoofers depends on several factors, primarily the installation size and the available volume for the Subwoofer enclosure. The installation depth is 120.8 mm, which allows for installation in many common vehicle models, provided the cutout diameter of 181 mm is taken into account. Without specific brand compatibility in the description, it is crucial to check the dimensions of the installation location in the vehicle beforehand. The choice between a sealed or bass reflex enclosure must also be considered to ensure optimal sound quality and avoid space issues.

What materials are used in the Punch P2D2-8 Subwoofer?

The Rockford Fosgate Punch P2D2-8 is made from a variety of high-quality materials that contribute to its durability and impressive performance. The diaphragm is made of Kevlar-reinforced paper, which provides strength and flexibility. The dual linear spider uses embedded 16 AWG lead wires, which are crucial for insensitivity to high temperatures. The StampCast basket includes a smart ventilation system, while the diamond-cut aluminum cast ring offers additional stability and protection. The combination of these materials allows for clean, distortion-free sound even at high volumes.

What are the TSP (Thiele-Small Parameters) of the Punch P2D2-8 Subwoofer?

The Thiele-Small Parameters of the Rockford Fosgate Punch P2D2-8 Subwoofer provide important information about its acoustic properties and are critical for enclosure design. Key parameters include: Qts 0.46, Qms 5.40, Qes 0.51, and Vas 9.9 liters. The resonance frequency (Fs) is 39.6 Hz, indicating accurate bass reproduction. The Xmax of 7.8 mm reflects the maximum linear excursion, and the sound pressure level (SPL) is 83 dB at 1W/1m, ensuring high efficiency. These values are essential for high-quality acoustic performance.

Manufacturer information / responsible person

Audio Design Loudspeaker Sales GmbH
Am Breilingsweg 3
76709 Kronau
Germany

Authorized Managing Director:
Bruno Dammert

Contact: info@audiodesign.de

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