NSW6021-124 21" Speaker
NSW6021-124 21" Speaker
NSW6021-124 21" Speaker
NSW6021-124 21" Speaker
NSW6021-124 21" Speaker
NSW6021-124 21" Speaker
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We currently have 46 in stock.

NSW6021-124 21" Speaker

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Our most technologically advanced, high-performance subwoofer now has the flexibility to meet any amplifier and enclosure combination. Its unique bifilar, low-inductance, inside/outside wound, dual 2Ω voice coil features heavy gauge pure copper windings and a reinforced high-temperature fiberglass former. Mirror-image spiders spaced 13 mm apart provide effortless coil control and dynamic balance at maximum excursion.

Designed using advanced measurement and FEA optimization tools, the NSW6021-124 enables easy switching between 1, 2, or 4-ohm amplifier loads while ensuring near zero-inductance transient response. One woofer for all your designs whether vented, horn-loaded, or sealed. Any amplifier, any cabinet, allow us to surpass your expectations.

FEATURES INCLUDE:

  • Bifilar, Low Inductance Voice Coil
  • Selectable 1, 2+2, or 4Ω  
  • 21” Nominal Diameter
  • 5000 W Program Power
  • Spaced Dual Spiders
  • 24mm Xvar

Applications 

Subwoofer  | Pro Audio

Box Type: Vented, Sealed, Scoop Loading, Horn Loading



Specifications


SPECIFICATION
Nominal Basket Diameter 21", 533 mm
Nominal Impedance* 1, 2, or 4 Ω
Power Rating*
Program Power 5000 W
Watts (AES) 2500 W
Resonance 30.67 Hz
Usable Frequency Range 25 Hz - 0.6 kHz
Sensitivity* 95.0 dB
Magnet Weight 45 oz.
Gap Height 0.75", 19 mm
Voice Coil Diameter 6", 152 mm
Mirror Image Twin Spiders
13 mm Spacing
THIELE & SMALL PARAMETERS
Resonant Frequency (fs) 30.67 Hz
DC Resistance (Re) 2,9 Ω
Coil Inductance (Le) 1.2m H
Mechanical Q (Qms) 10.38
Electromagnetic Q (Qes) 0.33
Total Q (Qts) 0.32
Compliance Equivalent Volume (Vas) 224.58 liters / 7.93 cu.ft.
Peak Diaphragm Displacement Volume (Vd) 3448.2 cc
Mechanical Compliance of Suspension (Cms) 0.05 mm/N
BL Product (BL) 30.5 T-M
Diaphragm Mass Inc. Airload (MMs) 551 grams
Efficiency Bandwidth Product (EBP) 92.68
Maximum Linear Excursion (Xmax) 21 mm
Surface Area of Cone (Sd) 1642 cm2
Maximum Mechanical Limit (Xlim) 40.4 mm
MOUNTING INFORMATION
Recommended Enclosure Volume
Sealed 122.61–181.79 liters/4.33–6.42 cu.ft.
Vented 155.74-481.39 liters / 5.50-17.00 cu.ft.
Driver Volume Displaced 0.379 cu.ft. / 10.72 liters
Overall Diameter 21.65", 549.9 mm
Baffle Hole Diameter 19.83", 503.7 mm
Front Sealing Gasket YES
Rear Sealing Gasket N/A
Mounting Holes Diameter 0.34", 8.6mm
Mounting Holes B.C.D. 20.67", 525mm
Depth 10.39", 263.9 mm
Net Weight 48.1 lbs, 21.82 kg
Shipping Weight 51.6 lbs, 23.41 kgs
MATERIALS OF CONSTRUCTION
Coil Construction I/O Copper voice coil
Coil Former Fiberglass former
Magnet Composition Neodymium magnet
Core Details Vented motor
   
Basket Materials Die-cast aluminum basket
Cone Composition Wet pressed, X5 cone pulp
Cone Edge Composition Advanced Polycotton surround
Dust Cap Composition Wet pressed, X5 dust cap pulp

Spec Sheet and Cab Designs 

Download Spec Sheet  Download Cab Design


Frequency Response

response graph