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21"pro audio subwoofer -
Availability: 10 In Stock
Your Price: $654.00
Shipping: $28.50
Total With Shipping: $682.50
3 Yr Plan add $75.95 
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The 21SW4000-NDY-4 21'' neodymium subwoofer from PRV Audio is the perfect solution for extreme systems where a measly 18'' driver just will not do. With nearly 60% more surface area than most 18'' drivers and an incredible 18 mm xmax, this driver can move serious amounts of air. The 21SW4000-NDY-4 is an ideal choice for use in clubs, live venues, and high output car audio systems.

The 21SW4000-NDY-4 features everything you have come to expect from PRV's high power drivers. The massive neodymium motor has extensive venting (vented pole piece, 10 radial vents in the back plate, and venting between the motor and frame) to create forced convection cooling for the voice coil reducing power compression and retaining sensitivity at high output. The 6'' high temperature voice coil uses an inside/outside winding configuration, further increasing power handling. Dual spiders and a heavy-duty cloth surround support the pulp paper cone, which has edge reinforcement to ensure no deformation around the high stress cone-to-surround joint. An incredibly rigid cast aluminum frame holds all of this together.


  • Capable of over 6 liters of displacement with each stroke for incredible output
  • Massive 6" inside/outside wound voice coil handles easily 2000 watts
  • Extensive motor and coil venting keeps power compression to a minimum
    UPC: 799928733526
    Model #: 21SW4000NDY4

  • *Warranty: Full manufacturer's warranty applies. This item is accompanied by a manufacturer's warranty. Most items, if found to be defective, may be returned to Savinglots.com for replacement within 30 days from the original date of purchase with proper return authorization. After the 30 day time period, products must be returned to their original manufacturer for the remainder of the manufacturer's warranty period. Most manufacturers offer at least a 1 year warranty. Please check with the specific manufacturer for their warranty periods. Please email or call us with any questions if you are unable to find specific information.

    Large items such as refrigerators, freezers will be serviced under warranty by the manufacturers recommended servicer at your location.
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    Model:# 21SW4000NDY4