Eminence NSW6021-124 21 1-2-4 Ohm Selectable Woofer

This item is brand-new, factory sealed.

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 2 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 4 21 Nominal Diameter 5000 W Program Power Spaced Dual Spiders 24mm Xvar SPECIFICATION Nominal Basket Diameter 21", 533 mm Nominal Impedance 1, 2, or 4 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 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 122.61181.79 liters/4.336.42 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
Eminence NSW6021-124 21 in. 1-2-4 Ohm Selectable Woofer