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  5. Punch P2D2-15 / P2D4-15

Punch P2D2-15 / P2D4-15

400 Watt

Punch P2D2-15 / P2D4-15

Technical Highlights

  • Power RMS 400 watts, impedance D2 or D4.
  • Kevlar fiber reinforced paper membrane, VAST technology.
  • StampCast basket, integrated spider ventilation, PVC magnetic cover.
  • More technical details
€236.55
-5% €249.00 €236.55
2% discount with credit card

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ProductPunch P2D2-15 / P2D4-15 · D2 (2x2 Ohm)

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Impedance: D2 (2x2 Ohm)
Estimated delivery: Sep 15–Sep 18.
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The Rockford Fosgate Punch P2D2-15 / P2D4-15 is a black and gray 15 subwoofer with red internal parts and dual voice coils, shown angled on a white background.
€236.55
€249.00 €236.55

Punch P2D2-15 / P2D4-15 is a 15-inch (38 cm) Subwoofer from Rockford Fosgate. The model comes with 400 watts RMS and 800 watts Max, featuring a dual voice coil in D2 with Dual 2 Ohm and D4 with Dual 4 Ohm variants. A Kevlar fiber-reinforced paper cone and VAST technology increase the cone area by up to 25%. It includes a dual linear spider with embedded 16 AWG tinsel leads, a high-temperature voice coil with spun Nomex reinforcement collar, and a StampCast basket with integrated spider ventilation. The construction is complemented by an extended pole shoe, compact and ventilated back plate, textured PVC magnet cover, and a diamond-cut aluminum die-cast ring with an optional grille insert. Mounting depth 186.5 mm, voice coil diameter 57.15 mm, cutout 353 mm, magnet weight 2.06 kg, displacement 3.8 liters, shipping weight 8.11 kg, SPL 86 dB, Xmax 13.3 mm (D2) or 12.2 mm (D4), and Fs 20 Hz (D2) or 20.9 Hz (D4).

Features
  • 15-inch Subwoofer (38 cm)
  • Kevlar fiber-reinforced paper cone
  • VAST technology for increased cone area up to 25%
  • Dual linear spider with embedded 16 AWG tinsel leads, 16 AWG ≈ 1.31 mm²
  • Custom nickel-plated push terminals, 4 mm²
  • High-temperature voice coil with spun Nomex reinforcement collar
  • Extended pole shoe and compact, ventilated back plate
  • StampCast basket with integrated spider ventilation
  • Protective, textured PVC magnet cover
  • Diamond-cut aluminum die-cast ring; optional grille insert
  • Available as D2 (Dual 2 Ohm) and D4 (Dual 4 Ohm)
Technical specifications
  • Size: 381 mm (15 inches)
  • RMS power: 400 watts
  • Max power: 800 watts
  • Mounting depth: 186.5 mm
  • Diameter of the voice coil: 57.15 mm
  • Magnet weight: 2.06 kg
  • Displacement of the woofer: 3.8 liters
  • Shipping weight: 8.11 kg
  • Cutout diameter: 353 mm
  • D2 (2x2 Ohm)
    • Nominal impedance: Dual 2 Ohm
    • Voice coil type: Dual voice coil
    • Fs: 20 Hz
    • Qts: 0.62
    • Qes: 0.69
    • Qms: 6.40
    • Re: 3.30 Ohm
    • Le: 3.4 mH
    • SPL: 86 dB @ 1 W/1 m
    • Xmax: 13.3 mm
    • Sd: 894 cm²
    • Volume: 219.6 liters
    • Closed enclosure volume (Vb): 44.7 liters
    • Bass reflex enclosure volume (Vb): 75.3 liters
  • D4 (2x4 Ohm)
    • Nominal impedance: Dual 4 Ohm
    • Voice coil type: Dual voice coil
    • Fs: 20.9 Hz
    • Qts: 0.66
    • Qes: 0.74
    • Qms: 5.70
    • Re: 6.40 Ohm
    • Le: 5.4 mH
    • SPL: 86 dB @ 1 W/1 m
    • Xmax: 12.2 mm
    • Sd: 894 cm²
    • Vas: 219.6 liters
    • Closed enclosure volume (Vb): 44.7 liters
    • Bass reflex enclosure volume (Vb): 75.3 liters

Frequently Asked Questions about Punch P2D2-15 / P2D4-15

What are the main performance features of the Punch P2D2-15 Subwoofer?

The Punch P2D2-15 Subwoofer from Rockford Fosgate delivers an RMS power of 400 Watts and a maximum power of 800 Watts. With a diameter of 15 inches, it features Kevlar-reinforced paper cones that increase the cone area by up to 25% through VAST technology. Its high SPL value of 86 dB at 1W/1m ensures high efficiency. The dual 2-ohm voice coil and the voice coil size of 57.15 mm contribute to excellent sound quality. Additional features include a diamond-cut aluminum cast ring that provides improved rigidity and built-in 16 AWG lead wires in the linear spider for better performance.

What are the installation requirements and dimensions for the Punch P2D2-15?

Installing the Punch P2D2-15 Subwoofer requires a mounting depth of 186.5 mm and a cutout diameter of 353 mm. Its StampCast basket with integrated spider ventilation offers a solid structure. For best performance, either a sealed enclosure with a volume of 44.7 liters or a bass reflex enclosure with 75.3 liters should be used. These specifications ensure optimal bass sound and protection of the subwoofer. The magnet weight of 2.06 kg provides a robust construction and contributes to the stability of the device. Shipping occurs at a total weight of 8.11 kg.

What impedance options does the Punch P2D2-15 Subwoofer offer?

The Punch P2D2-15 Subwoofer is equipped with a dual 2-ohm voice coil configuration, providing additional flexibility for installation and adaptation to various amplifier systems. This dual voice coil allows for parallel or series wiring to adjust the overall impedance to the amplifier. The Re value of 3.3 ohms and the inductance of 3.4 mH are technical details that may be of interest to serious enthusiasts and installers. Adjusting the impedance is essential to ensure optimal performance and sound quality of the subwoofer.

How does the design of the cone affect the sound quality of the Punch P2D2-15?

The diaphragm of the Punch P2D2-15 is made from Kevlar fiber-reinforced paper, which promotes stable and reliable reproduction of low frequencies. This design prevents unwanted distortions and increases the overall stability of the diaphragm at high excursions. The VAST technology significantly contributes to increasing the effective diaphragm area by up to 25%. This means more air displacement and thus stronger bass reproduction. These technical details ensure precise bass reproduction, which is essential for audio playback in vehicles, especially at high volumes. The unique construction enhances durability and dynamics.

What mounting options are available for the Punch P2D2-15?

The Punch P2D2-15 offers secure and robust connection options thanks to its custom 4 mm² nickel-plated push terminals, ensuring a stable connection. These connections are designed to meet the challenges of demanding sound and reduce any potential signal losses. The diamond-cut aluminum cast ring serves as a solid mounting point that stabilizes the mounting structure. Additionally, there is the option to use an additional grille insert to protect the Subwoofer, especially in mobile installations. The combination of versatile mounting points and accessories contributes to adaptability in various installation environments.

What frequency ranges are supported by the Punch P2D2-15?

The Rockford Fosgate Punch P2D2-15 Subwoofer is optimized for low-frequency reproduction, particularly thanks to an Fs value of 20 Hz, allowing for precise reproduction of very low tones. With a Qts of 0.62 and a Qes of 0.69, the Subwoofer adaptation in various enclosure types is facilitated, enabling efficient handling of different frequency ranges. These parameters are important for fine-tuning and adjusting enclosures to maximize the sound performance of the Subwoofer. Additionally, these settings allow for diverse applications in various acoustic environments.

Can the Punch P2D2-15 be combined with different vehicle models?

Yes, the Punch P2D2-15 can be integrated into various vehicle models due to its flexible installation. Important are the installation depth of 186.5 mm and the cutout diameter of 353 mm. These dimensions should be considered when planning the installation to securely mount the Subwoofer. The StampCast design with integrated spider ventilation ensures optimized airflow and cooling, which is particularly advantageous in compact vehicles. However, no specific information about brands or models is provided in the product description, so general compatibility should be checked based on the technical dimensions.

What advantages do the Thiele-Small parameters of the Punch P2D2-15 offer?

The Thiele-Small parameters of the Punch P2D2-15 are crucial for application in various enclosures. With a Vas of 219.6 liters, the Subwoofer shows the required volume for maximum bass reproduction. The Qms value of 6.40 reflects the mechanical quality of the system, while the Qts value of 0.62 provides an optimal balance between efficiency and bandwidth. These parameters allow for precise calculation of enclosure requirements, which is beneficial for building or adapting existing enclosures. The correct application of these parameters ensures efficient sound reproduction and adaptation to various acoustic scenarios.

How do I correctly install the Punch P2D2-15 Subwoofer?

For the correct installation of the Punch P2D2-15, it should be installed in either a sealed or a bass reflex enclosure with a recommended volume of 44.7 or 75.3 liters. The installation depth of 186.5 mm and the cutout diameter of 353 mm are important measurements for the installation location in the vehicle. When connecting, the 4 mm² nickel-plated push terminals ensure an optimal connection with the Amplifier. Mount the Subwoofer in such a way that the integrated spider ventilation of the StampCast basket improves airflow efficiency to avoid overheating. It is also important to ensure the correct fit of the diamond-cut aluminum cast ring.

What technical parameters define the sound of the Punch P2D2-15?

The sound of the Punch P2D2-15 Subwoofer is defined by several technical parameters: First, the high SPL value of 86 dB, which indicates volume efficiency, as well as the sensational Xmax of 13.3 mm, which allows for significant diaphragm displacement and thus powerfully reproduces low frequencies. The use of high-temperature voice coils with spun Nomex reinforcement collar ensures high load capacity. Additionally, parameters such as the Qts of 0.62, the Qes of 0.69, and the Qms of 6.40 influence the system's response under various operating conditions and contribute to the generation of a finely tuned bass spectrum.

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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