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  • Eminence NSW6021-6 21" Tour Grade Subwoofer Driver 6" Voice Coil 21mm Xmax - In Stock

Eminence NSW6021-6 21" Tour Grade Subwoofer Driver 6" Voice Coil 21mm Xmax - In Stock

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The Eminence 21-inch NSW6021-6 subwoofer driver is renowned for its superior performance, thanks to its use of advanced measurement systems and FEA optimization tools. Its next generation design allows for impressive displacement and high power handling, making it suitable for use in small to large-vented enclosures. This subwoofer is considered by many to be the best in its class on the market.


Klippel Tested - see attached images.


SPECIFICATIONS

Nominal Basket Diameter: 21", 533 mm

Nominal Impedance* 6Ω

Power Rating*

  • Program Power: 5000 W
  • Continuous (AES): 2500 W

Resonance (fs): 29 Hz

Usable Frequency Range: 25 Hz - 0.6 kHz

Sensitivity*: 97.0 dB

Magnet Weight: 45 oz.

Gap Height: 0.75", 19 mm

Voice Coil Diameter: 6", 152 mm


THIELE & SMALL PARAMETERS

Resonant Frequency (fs): 29 Hz

DC Resistance (Re): 3.8 Ω

Coil Inductance (Le): 1.38mH

Mechanical Q (Qms): 15.35

Electromagnetic Q (Qes): 0.31

Total Q (Qts): 0.31

Compliance Equivalent Volume (Vas): 224.58 liters / 7.93 cu.ft.

Peak Diaphragm Displacement Volume (Vd): 3448.2 cc

Mechanical Compliance of Suspension (Cms): 0.06 mm/N

BL Product (BL): 33.79 T-M

Diaphragm Mass Inc. Airload (MMs): 508 grams

Efficiency Bandwidth Product (EBP): 94

Maximum Linear Excursion (Xmax): 21 mm

Surface Area of Cone (Sd): 1642 cm2

Maximum Mechanical Limit (Xlim): 40.4 mm


MOUNTING INFORMATION

Eminence's Recommended Enclosure Volume

  • Sealed: N/a
  • Vented: 155.74-481.39 liters / 5.50-17.00 cu.ft.

Driver Volume Displaced: 0.379 cu.ft. / 10.72 liters

Overall Diameter: L 21.65", 549.9 mm

Baffle Hole Diameter: 19.83", 503.7 mm

Front Sealing Gasket: YES

Rear Sealing Gasket:

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 has established itself as the premier choice for professional audio and musical instrument loudspeakers, with a strong reputation among audio professionals and enthusiasts worldwide. The company is dedicated to providing the highest quality products and service to its customers, and this commitment is reflected in its wide selection of products, industry-leading seven-year warranty, and exceptional customer support. Eminence's products are all designed and hand-assembled in the USA, which has contributed to the company's status as the most trusted name in the industry. It is no surprise that many top brands and musicians around the globe rely on Eminence for their audio needs.




Eminence Speaker Tech Notes


Multiple units exceed published ratings evaluated under EIA 426A specification while tested in a free-air, non-temperature-controlled environment. Multiple compression drivers exceeded published ratings evaluated under EIA-426A or AES specification while mounted on Eminence’s H290, H290S, or H2EA horn in a non-temperature-controlled environment.

Eminence Speaker frequency response curves are an average of multiple units measured while applying 1W/1m into the speakers’ nominal impedance (e.g. 2.83V/8Ω, 4V/16Ω, etc.). All speakers are measured in a temperature controlled environment using monthly calibrated LMS software with supplied 0.25" microphone mounted on axis 1m distance from baffle. 2 ft. x 2 ft. baffle is flush with anechoic wall and speaker is rear mounted against a thin steel ring for minimum diffraction. Measurements performed using monthly calibrated Yamaha P3500S amplifier and a 2700 cubic foot anechoic chamber with custom made fiberglass surface treatments. Measurements below 200Hz are tail corrected to compensate for chamber volume. Compression drivers measured using a 2ft x 2ft baffle flush with anechoic wall and horn front mounted.

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*** 1 x Open-Box NSW6021-6 available ***


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Please note: BETA 8CX, 10CX and 12CX are coaxial speakers with tweeter sold separately. The data for these coaxial woofers was calculated with the ASD:1001 driver screwed into the woofer, but not active.

Prices, specifications and product cosmetics are subject to change without notice.

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