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Eminence DEFINIMAX 4018LF: 18 inch Pro Woofer

Price: $269.99 $254.99

Recommended for professional audio and bass as a low distortion sub-woofer in single or multi-driver designs.
1200 watts / 31-200Hz / 4″ voice coil
Die-cast aluminum basket
8 ohms

SKU: DEFINIMAX 4018LF Categories: , ,

Description

DEFINIMAX™ 4018LF

Recommended for professional audio and bass as a low distortion sub-woofer in single or multi-driver designs.

Click Here to Download PDF Spec Sheet

Click Here to Download PDF Cabinet Design

Specs:

Nominal Basket Diameter 18″, 457 mm

Nominal Impedance* 8 Ω

Power Rating** Watts 1200 W

Music Program 2400 W

Resonance 30 Hz

Usable Frequency Range 31 Hz- 0.2 kHz

Sensitivity*** 94.9 dB

Magnet Weight 109 oz.

Gap Height 0.375″, 9.5 mm

Voice Coil Diameter 4″, 102 mm

Thiele & Small Parameters:

Resonant Frequency (fs) 30 Hz

DC Resistance (Re) 6.1 Ω

Coil Inductance (Le) 4.54m H

Mechanical Q (Qms) 11.95

Electromagnetic Q (Qes) 0.35

Total Q (Qts) 0.34

Compliance Equivalent Volume (Vas) 254.71 liters / 9 cu.ft.

Peak Diaphragm Displacement Volume (Vd) 1018.1 cc

Mechanical Compliance of Suspension (Cms) 0.13 mm/N

BL Product (BL) 26.75 T-M Diaphragm Mass Inc.

Airload (MMs) 217 grams

Efficiency Bandwidth Product (EBP) 86

Maximum Linear Excursion (Xmax) 8.57 mm

Surface Area of Cone (Sd) 1188 cm2

Maximum Mechanical Limit (Xlim) 15.9 mm

Mounting Information:

Recommended Enclosure Volume

Sealed N/a

Vented 99.11-226.54 liters / 3.50-8.00 cu.ft.

Driver Volume Displaced 0.234 cu.ft. / 6.62 liters

Overall Diameter 18″, 457.2 mm

Baffle Hole Diameter 16.56″, 420.6 mm

Front Sealing Gasket Yes

Rear Sealing Gasket Yes

Mounting Holes Diameter 0.28″, 7.1mm

Mounting Holes B.C.D. 17.25″, 438.2mm

Depth 8.13″, 206.5 mm

Net Weight 24 lbs, 10.89 kg

Shipping Weight 26 lbs, 11.79 kgs

Materials of Construction:

Coil Construction Copper voice coil

Coil Former Polyimide former

Magnet Composition Ferrite magnet

Core Details Undercut with aluminum shorting ring and Core Periphery Ventilation

Basket Materials Die-cast aluminum basket

Cone Composition Water resistant paper cone

Cone Edge Composition Cloth cone edge

Dust Cap Composition Water resistant treated paper dust cap