Rockford Fosgate P2D4-8 Punch 8" P2 4-Ohm DVC Subwoofer

8" 4-Ohm DVC Punch P2 Subwoofer 250W RMS, Kevlar Cone, VAST, Dual Spider, Diamond-Cut Cast Aluminium Trim Ring, Extended Pole Piece.

---

Product Overview

The Rockford Fosgate Punch P2D4-8 is an 8" 4-Ohm Dual Voice Coil (DVC) subwoofer rated at 250W RMS the 4-Ohm variant of the Punch P2 8" platform. Identical construction to the P2D2-8 with the sole difference being 4-Ohm voice coil impedance per coil, providing wiring options of 2-Ohm (parallel), 8-Ohm (series), or 4-Ohm per coil for bi-amplification broader amplifier compatibility than the 2-Ohm DVC variant. Optimised for sealed and vented enclosures. Sold as an individual unit.

All confirmed Punch P2 construction applies: Kevlar fibre-reinforced paper cone, VAST surround (up to 25% increased cone area), high-temperature voice coil with spun-laced Nomex® reinforcement collar, dual linear spider with embedded 16 AWG tinsel leads, extended pole piece with bumped vented backplate, StampCast basket with integrated spider venting, 10-AWG nickel-plated push terminals, diamond-cut cast aluminium trim ring with grille insert provision, and protective PVC textured magnet cover.

---

Key Specifications

• Subwoofer size: 8 inch
• Voice coil configuration: Dual Voice Coil (DVC)
• Impedance: 4-Ohm per coil (2-Ohm parallel / 8-Ohm series / 4-Ohm biamp)
• Power handling (RMS): 250W (confirmed)
• Peak power: Not specified — confirm with Rockford Fosgate
• Surround technique: VAST (up to 25% increased cone area)
• Sensitivity: Not specified — confirm with Rockford Fosgate
• Frequency response: Not specified — confirm with Rockford Fosgate
• Xmax: Not specified — confirm with Rockford Fosgate
• Voice coil: High-temp, Nomex® reinforcement collar
• Cone: Kevlar fibre-reinforced paper
• Spider: Dual linear with embedded 16 AWG tinsel leads
• Basket: StampCast with integrated spider venting
• Pole piece: Extended
• Backplate: Bumped and vented
• Input terminals: 10-AWG nickel-plated push terminals
• Trim ring: Diamond-cut cast aluminium (grille insert compatible)
• Magnet cover: Protective PVC textured
• Enclosure compatibility: Sealed and vented ✓
• Mounting depth: Not specified — confirm with Rockford Fosgate
• Cutout diameter: Not specified — confirm with Rockford Fosgate
• Sold as: Individual unit
• Weight: Not specified — confirm with Rockford Fosgate
• Warranty: Not specified — confirm with Rockford Fosgate

---

Features & Benefits

• 4-Ohm DVC — Three Wiring Configurations:
  • 2-Ohm (parallel): Most common configuration — compatible with most 2-Ohm-rated mono amplifiers
  • 8-Ohm (series): Suits amplifiers with minimum impedance requirements above 4-Ohm
  • 4-Ohm per coil (biamp): Each coil to a separate amplifier channel
• 250W RMS — Confirmed 250W RMS in a compact 8" format.
• Diamond-Cut Cast Aluminium Trim Ring — Die-cast aluminium with a precision diamond-cut machined finish — a premium visual and structural step above rubberized ABS trim rings.
• Dual Linear Spider — Two spiders for improved compliance linearity and cone control at high excursion levels.
• Kevlar Fibre-Reinforced Paper Cone — Kevlar reinforcement for improved stiffness and breakup resistance with paper's natural damping.
• VAST — Up to 25% increased effective cone area at the same basket diameter.
• Nomex® Voice Coil Reinforcement Collar — Thermal and mechanical reinforcement at the highest-stress junction of the moving assembly.
• Extended Pole Piece and Bumped Vented Backplate — Extended pole for increased Xmax; vented backplate eliminates air spring compression.
• 10-AWG Nickel-Plated Push Terminals — Heavier gauge connection for 250W operation.
• StampCast Basket with Integrated Spider Venting — Motor cooling during sustained use.

---

Technical Specs

---

Compatible With / Goes Well With

Suitable enclosure types:

• Sealed — tight, accurate bass
• Vented — higher efficiency at tuning frequency

Wiring:

• 2-Ohm → parallel (most common)
• 8-Ohm → series
• 4-Ohm per coil → biamp

Pairs well with:

• Rockford Fosgate T1000-1BDCP or T1500-1BDCP mono amplifiers at 2-Ohm or 4-Ohm

---

Frequently Asked Questions

What is the difference between the P2D4-8 and P2D2-8?

Both are identical 8" Punch P2 subwoofers with the same 250W RMS rating and construction. The difference is voice coil impedance: P2D4-8 is 4-Ohm per coil (2-Ohm parallel / 8-Ohm series), while the P2D2-8 is 2-Ohm per coil (1-Ohm parallel / 4-Ohm series). The 4-Ohm DVC's 2-Ohm parallel configuration is more universally compatible with mono amplifiers than the 2-Ohm DVC's 1-Ohm parallel option.

What amplifier power is appropriate?

250W RMS at the selected wiring impedance. Confirm the amplifier's RMS output at 2-Ohm (parallel) or 4-Ohm before purchasing.

What enclosure volume is recommended?

Not confirmed in the supplier data. Pull the official Rockford Fosgate P2D4-8 datasheet for sealed and vented recommendations.

Is a grille available?

The diamond-cut cast aluminium trim ring accommodates an optional grille insert. Confirm the compatible grille SKU with Rockford Fosgate.

Why does the P2 use a dual spider?

Two spiders provide greater mechanical damping and more linear suspension compliance across the full excursion range of the voice coil — reducing distortion and improving cone control at high output levels compared to a single spider design.