The Rockford Fosgate P3SD4-8 is an 8-inch shallow-mount car subwoofer built for depth-limited installations. It combines 150 watts RMS power handling, dual 4-ohm voice coils, an anodized aluminum cone, and compatibility with sealed or vented enclosures.
$199.99
Out of stock
The Rockford Fosgate P3SD4-8 brings deep, physical bass into vehicles where mounting depth is limited. Its 8-inch shallow design delivers the low-end rumble and impact that fills out music without requiring space for a traditional deep subwoofer. With flexible dual 4-ohm voice coils and support for sealed or vented enclosures, it can adapt to a wide range of compact bass installations.
| Subwoofer Specifications | |
|---|---|
| Sub Size | 8in |
| Sub Type | Shallow |
| Sub Power RMS | 150 Watts |
| Sub Max Power | 300 Watts |
| Sub Impedance | Dual 4 Ohm |
| Voice Coils | Dual |
| Voice Coil Diameter | 2in (51.6 mm) |
| Performance & Thiele/Small Parameters | |
|---|---|
| Maximum Linear Excursion (Xmax) | 8.5mm |
| Sound Pressure Level (SPL) @ 1W/1m | 82dB |
| Resonant Frequency (Fs) | 39Hz |
| DC Resistance (Re) | 6.0Ohm |
| Voice Coil Inductance (Le) | 1.46mH |
| Total Q (Qts) | 0.87 |
| Electrical Q (Qes) | 1.05 |
| Mechanical Q (Qms) | 5 |
| Equivalent Compliance Volume (Vas) | 15.8Liters |
| Effective Cone Area (Sd) | 220cm² |
| Fitment & Dimensions | |
|---|---|
| Woofer Displacement | 0.040 cu. ft. (1.13 Liters) |
| Mounting Depth | 2.66 in. (67.5 mm) |
| Cutout Diameter | 7.13 in. (181.0 mm) |
| Magnet Weight (oz) | 37.5 oz. (1.06 Kg) |
| Sealed Box Volume (Vb) | 0.25 cu. ft. (7.0 Liters) |
| Vented Box Volume (Vb) | 0.75 cu. ft. (21.2 Liters) |
| Speaker Connector | Dual 10 AWG Compression |
| Shipping Weight | 8.8 Lbs. (3.99 Kg.) |
| Weight | 9 lbs |
|---|---|
| Sub Size | |
| Sub Impedance | |
| Sub Max Power | 300 Watts Max |
| Sub Power RMS | |
| Sub Type | Shallow |
| Voice Coils | Dual |
| Series | Punch |