8" P3S Shallow 2-Ohm DVC Subwoofer 150W RMS, Anodised Aluminium Cone, M-Roll Santoprene Surround, Shallow Motor Assembly. Sealed and Vented Compatible.

Product Overview

The Rockford Fosgate Punch P3SD2-8 is an 8" 2-Ohm Dual Voice Coil (DVC) shallow subwoofer rated at 150W RMS from the P3S (Punch P3 Shallow) series, designed for depth-constrained installations where a standard-depth subwoofer cannot be fitted. Unlike the R2SD shallow series (sealed only), the P3SD2-8 is confirmed compatible with both sealed and vented enclosures providing enclosure design flexibility not typically available in shallow-mount subwoofers.

The P3S introduces the M-Roll Santoprene surround a different surround geometry from the standard P3 models, chosen for the controlled compliance characteristics appropriate to a shallow-motor driver. The anodised aluminium cone and dustcap from the P3 platform are carried across. The 2-Ohm DVC provides wiring options of 1-Ohm (parallel), 4-Ohm (series), or 2-Ohm per coil for bi-amplification. Sold as an individual unit.

Full technical specifications mounting depth, sensitivity, Xmax, cutout diameter, enclosure volumes are not provided in the supplier data and must be pulled from the official Rockford Fosgate P3SD2-8 datasheet.

Key Specifications

• Subwoofer size: 8 inch (shallow)
• Voice coil configuration: Dual Voice Coil (DVC)
• Impedance: 2-Ohm per coil (1-Ohm parallel / 4-Ohm series / 2-Ohm biamp)
• Power handling (RMS): 150W (confirmed)
• Peak power: Not specified — confirm with Rockford Fosgate
• Motor assembly: Shallow (exact depth not confirmed)
• Sensitivity: Not specified — confirm with Rockford Fosgate
• Frequency response: Not specified — confirm with Rockford Fosgate
• Xmax: Not specified — confirm with Rockford Fosgate
• Cutout diameter: Not specified — confirm with Rockford Fosgate
• Mounting depth: Shallow — exact depth not confirmed
• Voice coil: Not specified — confirm with Rockford Fosgate
• Cone: Anodised aluminium ✓
• Dustcap: Anodised aluminium ✓
• Surround: M-Roll Santoprene ✓
• Spider: Dual linear with embedded 16 AWG tinsel leads ✓
• Basket: StampCast with integrated spider venting ✓
• Input terminals: Not specified — confirm with Rockford Fosgate
• Trim ring: Diamond-cut cast aluminium (grille insert compatible) ✓
• Enclosure compatibility: Sealed and vented ✓
• Sealed enclosure volume: Not specified — confirm with Rockford Fosgate
• Vented enclosure volume: 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

• Shallow Motor Assembly — Both Sealed and Vented Compatible — The P3SD2-8 uses an elevated shallow motor structure to reduce mounting depth, enabling installation in tight-space locations. Unlike many shallow subwoofers that are restricted to sealed enclosures, the P3SD2-8 is confirmed to perform well in both sealed and vented configurations — a meaningful installation flexibility advantage.
• 150W RMS — Confirmed 150W RMS — appropriate for a shallow 8" driver operating within the constraints of a reduced motor excursion range. Match to an amplifier rated at 150W RMS at the intended wiring impedance.
• Anodised Aluminium Cone and Dustcap — The P3S carries the anodised aluminium cone and dustcap from the standard Punch P3 range into the shallow platform — providing rigidity, heat conduction, and breakup resistance appropriate for a premium shallow-mount driver.
• M-Roll Santoprene Surround — The M-Roll surround profile is a specific rolled-edge geometry chosen for the compliance characteristics appropriate to a shallow motor's reduced excursion range. Santoprene (thermoplastic vulcanizate elastomer) provides excellent UV resistance, temperature stability, and long-term durability.
• Dual Linear Spider — Two spiders for improved suspension compliance and cone control — particularly important in a shallow driver where the reduced motor gap requires tighter suspension geometry control.
• StampCast Basket with Integrated Spider Venting — Motor cooling during sustained operation.
• Diamond-Cut Cast Aluminium Trim Ring — Premium machined aluminium finish with optional grille insert provision.

Technical Specs

Compatible With / Goes Well With

Suitable enclosure types:

• Sealed — confirmed
• Vented — confirmed

Wiring:

• 1-Ohm → parallel (confirm amplifier stability)
• 4-Ohm → series
• 2-Ohm per coil → biamp

Pairs well with:

• A mono amplifier rated at 150W RMS at the selected wiring impedance
• A shallow sealed or vented 8" enclosure to Rockford Fosgate's recommended volume

Frequently Asked Questions

Can the P3SD2-8 be used in a vented enclosure?

Yes — unlike many shallow-mount subwoofers that are restricted to sealed designs, the P3SD2-8 is confirmed compatible with both sealed and vented enclosures. This is a meaningful installation flexibility advantage. Confirm Rockford Fosgate's recommended enclosure volumes from the official P3SD2-8 datasheet.

What is an M-Roll Santoprene surround?

M-Roll describes the profile of the surround at the cone edge — a rolled-edge geometry selected for the compliance characteristics appropriate to the P3S shallow motor's reduced excursion range. Santoprene is a thermoplastic vulcanizate (TPV) elastomer with excellent UV resistance, temperature stability, and long-term durability — suited to Australian vehicle environments.

What wiring options does the 2-Ohm DVC provide?

1-Ohm (both coils in parallel — requires amplifier rated stable at 1-Ohm), 4-Ohm (both coils in series — broadly compatible), and 2-Ohm per coil for bi-amplification.

What mounting depth does the P3SD2-8 require?

Confirmed as shallow, but the exact millimetre figure is not in the supplier data. Pull from the official Rockford Fosgate P3SD2-8 datasheet before purchasing for any depth-constrained installation.

Why is the P3SD2-8 rated at 150W RMS rather than the 500–600W of the standard P3?

The shallow motor assembly produces a reduced linear excursion (Xmax) compared to a full-depth motor of the same diameter. Less excursion means the driver can safely handle less sustained power before the voice coil reaches the limits of the magnetic gap. The 150W RMS rating reflects this constraint — matched to the shallow motor's capacity rather than the driver's material quality.