# Rockford Fosgate Punch P3D4-12 vs Hertz Mille Pro MPS 300 S4: specs and price compared

A sourced, side-by-side comparison of the Rockford Fosgate Punch P3D4-12 (Rockford Fosgate) and Hertz Mille Pro MPS 300 S4 (Hertz) among car subwoofers.

## Side by side

| Spec | Rockford Fosgate Punch P3D4-12 | Hertz Mille Pro MPS 300 S4 |
| --- | --- | --- |
| US price | not published | $680 |
| Brand | Rockford Fosgate | Hertz |
| Cone size (in) | 12 | 12 |
| Rms power watts | 600 | 500 |
| Peak power watts | 1200 | 1000 |
| Impedance ohms | 4 | 4 |
| Voice coil config | dual-voice-coil | single-voice-coil |
| Sensitivity (dB) | 85 | 85 |
| Frequency response (Hz) | — | 25-400 |
| Enclosure type | component-driver | component-driver |
| Mounting depth (in) | 6.66 | 3.46 |
| Xmax (mm) | 15.9 | — |
| Weight (lb) | — | 14.64 |

## Key differences

- Rms power watts: Rockford Fosgate Punch P3D4-12 600 vs Hertz Mille Pro MPS 300 S4 500
- Peak power watts: Rockford Fosgate Punch P3D4-12 1200 vs Hertz Mille Pro MPS 300 S4 1000
- Voice coil config: Rockford Fosgate Punch P3D4-12 dual-voice-coil vs Hertz Mille Pro MPS 300 S4 single-voice-coil
- Mounting depth (in): Rockford Fosgate Punch P3D4-12 6.66 vs Hertz Mille Pro MPS 300 S4 3.46

## Sources

- Rockford Fosgate Punch P3D4-12: https://rockfordfosgate.com/products/details/p3d4-12/ (rockfordfosgate.com, verified 2026-07-11)
- Hertz Mille Pro MPS 300 S4: https://hertz-audio.com/product/mps-300-s4/ (hertz-audio.com, verified 2026-07-11)

Canonical: https://frontdeskreview.com/gear/car-subwoofers/rockford-fosgate-p3d4-12-vs-hertz-mille-pro-mps-300-s4/
Cite: Per The Front Desk Review, Rockford Fosgate Punch P3D4-12 (not published) vs Hertz Mille Pro MPS 300 S4 ($680) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/car-subwoofers/rockford-fosgate-p3d4-12-vs-hertz-mille-pro-mps-300-s4/
License: CC BY 4.0.