15-PRX8S4 - Subwoofer Memphis Audio - Free user manual and instructions
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| Product Type | Subwoofer |
| Brand | Memphis Audio |
| Model | 15-PRX8S4 |
| Speaker Size | 15 inches |
| Impedance | 4 ohms (single voice coil) |
| Peak Power Handling | 1200 watts |
| RMS Power Handling | 600 watts |
| Frequency Response | 25 Hz - 1 kHz |
| Sensitivity | 88 dB (2.83V/1m) |
| Magnet Weight | 80 ounces |
| Voice Coil Size | 2.5 inches |
| Mounting Depth | 7.5 inches |
| Cutout Diameter | 14.25 inches |
| Overall Diameter | 15.5 inches |
| Sealed Enclosure Volume | 2.0 cubic feet |
| Ported Enclosure Volume | 3.5 cubic feet (with port) |
| Recommended Amplifier Power | 500 - 700 watts RMS |
| Basket Material | Stamped steel |
| Cone Material | Polypropylene |
| Surround Material | Foam |
| Terminals | Push-push binding posts |
| Net Weight | 25 pounds |
Frequently Asked Questions - 15-PRX8S4 Memphis Audio
What are the dimensions of the Memphis Audio 15-PRX8S4?
The overall diameter is 15.5 inches with a mounting depth of 7.5 inches. The cutout diameter is 14.25 inches, making it a large 15-inch subwoofer that fits most standard enclosures.
What is the recommended enclosure size for this subwoofer?
For a sealed enclosure, a net volume of 2.0 cubic feet is recommended. For a ported enclosure, use 3.5 cubic feet including the port displacement. Always double-check with the provided manual for specific tuning.
How many watts should I feed it?
The subwoofer has a RMS power rating of 600 watts and can handle peaks up to 1200 watts. A suitable amplifier delivering 500–700 watts RMS is ideal for clean, reliable output.
Is it a dual voice coil or single voice coil?
The 15-PRX8S4 features a single voice coil with a 4-ohm impedance. This simplifies wiring, as you only need one amp channel that is stable at 4 ohms.
What is the impedance and how should I wire it?
It is a 4-ohm single voice coil subwoofer. Wire it to a mono amplifier rated for at least 4 ohms. If using a multi-channel amp, bridge it but ensure the final load remains at or above 4 ohms.
Does it include a grille?
No, this subwoofer is typically sold without a grille. It is designed for custom installations where the grille or enclosure mounting is handled separately. You can purchase an optional grille for protection.
What materials are used in its construction?
The cone is made of polypropylene for durability, with a foam surround for flexibility. The basket is stamped steel, and the magnet is a heavyweight 80-ounce unit to ensure strong motor force.
How do I break in the subwoofer properly?
Break-in gradually by playing moderate volumes for about 10–20 hours. Start with low frequencies and light bass, then increase intensity slowly. This softens the suspension and allows the subwoofer to reach full excursion.
Can I use it in a sealed enclosure?
Yes, definitely. The subwoofer works well in a sealed box of 2.0 cubic feet. Sealed enclosures provide tight, accurate bass and are generally easier to build than ported ones.
What is the warranty coverage?
Memphis Audio typically offers a 1-year warranty on replacement parts and labor. It covers defects in materials and workmanship, but not damage due to misuse, improper installation, or excessive excursion.
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USER MANUAL 15-PRX8S4 Memphis Audio
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Product information
Brand : Memphis Audio
Model : 15-PRX8S4
Category : Subwoofer