PRV Audio 21SW4000-NDY-2 Reinforced Edition 21" 4000W RMS (8000W Peak Power Handling) at 2-Ohms, Single Voice Coil Neodymium Component Car Subwoofer (Sold as Single)
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What's Inside?
- • 21" Reinforced Edition Single Voice Coil Neodymium Component Car Subwoofer
- • Installation Accessories
- • Owner's Manual
Massive 21 Inch Bass That Hits Like Nothing Else
The PRV Audio 21SW4000-NDY-2 is built for one thing and that is pure, overwhelming bass. With a huge 21 inch cone, this sub moves serious air to deliver deep and powerful low frequencies that you can feel in your chest. Backed by 4000 watts RMS and up to 8000 watts peak power, it brings extreme output that is perfect for competition level builds and high performance systems that demand maximum impact.
Advanced Power And Control For Extreme Builds
This subwoofer is engineered for serious performance with a massive 5.3 inch inside outside wound copper voice coil that keeps heat under control even during long sessions. The neodymium motor design gives you incredible magnetic strength without the extra weight, while the high excursion capability and strong BL motor structure keep every movement tight and precise. Add in a reinforced carbon fiber loaded cone with a triple roll surround, and you get durability and control that can handle extreme bass without losing accuracy. Designed for inverter box setups, it delivers clean, powerful output with minimal distortion, making it the ultimate choice for serious car audio enthusiasts.
Frequently Asked Questions (FAQ)
- • Why is my PRV Audio 21SW4000-NDY-2 not producing the massive bass I expected?
The most common causes are an enclosure that is too small, incorrect port tuning, or amplifier settings that limit the subwoofer's full potential. Proper system design is critical for a 21 inch subwoofer.
- • Can the PRV Audio 21SW4000-NDY-2 be used for daily music listening?
Yes. While it is built for extreme output, many users install it in daily driven vehicles. A properly tuned system can provide both powerful bass and enjoyable music playback.
- • Why does my PRV Audio 21SW4000-NDY-2 cause my headlights to dim?
This usually indicates that your vehicle's electrical system is struggling to supply enough current. Upgrading the battery, alternator, or power wiring can improve voltage stability.
- • Does the PRV Audio 21SW4000-NDY-2 require a custom enclosure?
Most users achieve the best performance with a custom enclosure designed around the manufacturer's recommended specifications. A properly built enclosure helps maximize output and efficiency.
- • Why is my PRV Audio 21SW4000-NDY-2 getting hot after a demo session?
Heat buildup is normal during extended high power use. Excessive temperatures are often caused by amplifier clipping, overpowering, or inadequate cooling around the installation.
- • Can I wire two PRV Audio 21SW4000-NDY-2 subwoofers to one amplifier?
Yes. Since each subwoofer features a dual 2 Ohm voice coil, there are several wiring configurations available. Always calculate the final impedance to ensure it matches your amplifier's safe operating range.
- • Why does my PRV Audio 21SW4000-NDY-2 make a loud mechanical noise at very low frequencies?
This may occur when the subwoofer exceeds its safe cone excursion. Using a properly adjusted subsonic filter can help protect the speaker from unnecessary mechanical stress.
- • Is the PRV Audio 21SW4000-NDY-2 a good option for SPL competitions?
Yes. Its high power capability and neodymium motor design make it a popular choice for high output installations where maximum bass performance is the goal.
- • Why does my PRV Audio 21SW4000-NDY-2 seem quieter after playing for a long time?
This can happen because of thermal compression, where the voice coil heats up during extended use. Adequate cooling and clean amplifier power help maintain consistent performance.
- • What is the best way to get the most from the PRV Audio 21SW4000-NDY-2?
Pair it with a high quality amplifier that matches its RMS power rating, build the enclosure to the recommended specifications, maintain a strong electrical system, and carefully tune the crossover, gain, and subsonic filter for maximum output and reliability.
- Diameter : 21 Inch
- Sensitivity : 97 dB
- Impedance : 2 Ohm
- Frequency Response : 45-1200 Hz
- Peak Power Handling : 8000 Watts
- Design : 1 Way
- RMS Power Handling : 4000 Watts
Features:
- Extreme 4000 Watt Output Capability: Built to handle 4000 watts RMS with up to 8000 watts peak power, delivering massive low frequency energy for competition level car audio systems.
- Massive 21 Inch Bass Authority: Engineered with a large cone area to move more air, producing deep and powerful sub bass with exceptional impact.
- Advanced 5.3 Inch Voice Coil Design: Features a large inside outside wound copper voice coil on a glass fiber former for superior heat dissipation and long term durability.
- High Excursion Performance Control: Provides over 15 mm Xmax with 72 mm peak to peak excursion, ensuring deep bass output with precise cone movement.
- Neodymium Motor Efficiency: Utilizes a high strength neodymium magnet structure to deliver powerful motor force while reducing overall system weight.
- Dual Forced Cooling System: Incorporates advanced ventilation design to efficiently cool the voice coil and minimize power compression during extended high output use.
- Reinforced Carbon Fiber Loaded Cone: Built with a proprietary reinforced cone and triple roll surround to withstand extreme pressure and maintain structural integrity.
- High BL Motor Strength: Designed for superior cone control, delivering tight, accurate, and distortion free bass response at high output levels.
- Inverter Box System Optimization: Specifically engineered for inverter enclosure designs, maximizing performance and efficiency in advanced custom car audio builds.
Specifications:
- Nominal Diameter: 21″ (553 mm)
- Nominal impedance: 2 Ohm
- Continuous Program Power (RMS): 4000 Watts
- Max Peak Power: 8000 Watts
- Sensitivity 1.41V at 1m: 97 dB
- Frequency Response at -10dB: 45 – 1,200 Hz
- Voice Coil Diameter: 5.3″ (135 mm)
- Voice Coil Wire: Copper
- Voice Coil Winding Depth: 39.0 mm
- Former Material: Glass Fiber
- Magnetic Gap Depth: 18.0 mm
- Excursion (mathematical): 15.00 mm
- Frame Material: Die Cast Aluminum
- Cone Material Reinforced Cone: Reinforced Cone – PRV’s Proprietary Formula
- Overall Diameter: 21.53” (547 mm)
- Front Mount Baffle Cutout: 20.0” (508 mm)
- Mounting Depth: 9.64” (245 mm)
- Overall Depth: 10.23” (265 mm)
- UPC: 602938021722
- Weight: 30.2
- Authorized Internet Dealer
Warranty: 1 Year Warranty.
This item is accompanied by a manufacturer's warranty. If it is found to be defective, it may be returned to OnlineCarstereo.com for replacement within 1 Year from the original date of purchase with proper return authorization.
