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