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  • Eminence NSW6021-6 21" 6 Ohm Driver

Eminence NSW6021-6 21" 6 Ohm Driver

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21-inch Tour Grade - American Muscle Arguably the best 21-inch subwoofer on the market. Advanced measurement systems and FEA optimization tools were implemented on this next generation of tour grade worthy subwoofers by Eminence. The result is absurd, unrivaled displacement and exceptionally high power handling with top of the line performance in small to large vented enclosures.



SPECIFICATIONS

Nominal Basket Diameter21", 533 mmNominal Impedance*6 ΩPower Rating*Program Power5000 WWatts2500 WResonance29 HzUsable Frequency Range25 Hz - 0.6 kHzSensitivity*97.0 dBMagnet Weight45 oz.Gap Height0.75", 19 mmVoice Coil Diameter6", 152 mm



THIELE & SMALL PARAMETERS

Resonant Frequency (fs): 29Hz

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

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: 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



Footnotes

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.

The average output across the usable frequency range when applying 1W/1m into the nominal impedance. i.e: 2.83V/8Ω, 4V/16Ω. Eminence response curves are measured under the following conditions: All speakers are tested at 1W/1m using a variety of test set-ups for the appropriate impedance | LMS using 0.25" supplied microphone (software calibrated) mounted 1m from wall/baffle | 2 ft. x 2 ft. baffle is built into the wall with the speaker mounted flush against a steel ring for minimum diffraction | Yamaha P3500S amplifier | 2700 cu. ft. chamber with fiberglass on all six surfaces (three with custom-made wedges). Compression drivers were tested using a 2ft x 2ft baffle built into the wall with horn front mounted.

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