Eminence's NSW4018-8 18" tour grade subwoofer is designed to produce extremely high output for extended periods while producing low distortion. The lightweight neodymium motor has been optimized for maximum excursion capabilities with extensive ventilation allowing the 4" voice coil to handle up to 1,600 watts RMS with minimal power compression.
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\n18" Tour Grade - American Muscle - Advanced FEA optimization tools were implemented on this next generation of touring grade worthy subwoofers by Eminence. The result is an extremely long throw, light weight, and exceptionally high power handling driver.
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\n| SPECIFICATION |
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\n| Nominal Basket Diameter |
\n18", 457 mm |
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\n| Nominal Impedance* |
\n8 Ω |
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\n| Power Rating* |
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\n| Program Power |
\n3200 W |
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\n| Watts |
\n1600 W |
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\n| Resonance |
\n36 Hz |
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\n| Usable Frequency Range |
\n27 Hz - 1.3 kHz |
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\n| Sensitivity* |
\n96.6 dB |
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\n| Magnet Weight |
\n33 oz. |
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\n| Gap Height |
\n0.5", 12.7 mm |
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\n| Voice Coil Diameter |
\n4", 102 mm |
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\n| THIELE & SMALL PARAMETERS |
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\n| Resonant Frequency (fs) |
\n36 Hz |
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\n| DC Resistance (Re) |
\n5.86 Ω |
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\n| Coil Inductance (Le) |
\n1.54m H |
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\n| Mechanical Q (Qms) |
\n8.46 |
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\n| Electromagnetic Q (Qes) |
\n0.39 |
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\n| Total Q (Qts) |
\n0.38 |
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\n| Compliance Equivalent Volume (Vas) |
\n164.49 liters / 5.81 cu.ft. |
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\n| Peak Diaphragm Displacement Volume (Vd) |
\n1851.1 cc |
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\n| Mechanical Compliance of Suspension (Cms) |
\n0.08 mm/N |
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\n| BL Product (BL) |
\n28.24 T-M |
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\n| Diaphragm Mass Inc. Airload (MMs) |
\n237 grams |
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\n| Efficiency Bandwidth Product (EBP) |
\n91 |
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\n| Maximum Linear Excursion (Xmax) |
\n15.21 mm |
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\n| Surface Area of Cone (Sd) |
\n1217 cm2 |
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\n| Maximum Mechanical Limit (Xlim) |
\n31.5 mm |
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\n| MOUNTING INFORMATION |
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\n| Recommended Enclosure Volume |
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\n| Sealed |
\nN/a |
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\n| Vented |
\n99.11-339.80 liters / 3.50-12.00 cu.ft. |
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\n| Driver Volume Displaced |
\n0.205 cu.ft. / 5.81 liters |
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\n| Overall Diameter |
\n18.13", 460.5 mm |
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\n| Baffle Hole Diameter |
\n16.6", 421.6 mm |
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\n| Front Sealing Gasket |
\nYES |
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\n| Rear Sealing Gasket |
\nYES |
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\n| Mounting Holes Diameter |
\n0.28", 7.1mm |
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\n| Mounting Holes B.C.D. |
\n17.32", 439.9mm |
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\n| Depth |
\n8.9", 226.1 mm |
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\n| Net Weight |
\n20.9 lbs, 9.48 kg |
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\n| Shipping Weight |
\n23.4 lbs, 10.61 kgs |
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\n| MATERIALS OF CONSTRUCTION |
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\n| Coil Construction |
\nI/O Copper voice coil |
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\n| Coil Former |
\nFiberglass former |
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\n| Magnet Composition |
\nNeodymium magnet |
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\n| Core Details |
\nVented motor |
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\n| Basket Materials |
\nDie-cast aluminum basket |
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\n| Cone Composition |
\nX5 cone pulp |
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\n| Cone Edge Composition |
\nAdvanced Polycotton surround |
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\n| Dust Cap Composition |
\nX5 dust cap pulp |
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