DEFINIMAX™ 4018LF Professional Series
Recommended for professional audio and bass as a low distortion sub-woofer in single or multi-driver designs.
SPECIFICATION - Nominal Basket Diameter 18", 457.2 mm
- Nominal Impedance 8 ohms
- Power Rating Watts 800 W / Music Program 1600 W
- Resonance 32Hz Usable Frequency Range 36 Hz -200 Hz
- Sensitivity 95
- Magnet Weight 109
- Gap Height 0.375",
- Voice Coil Diameter 4", 101.6 mm
THIELE & Small Parameters - Resonant Frequency (fs) 32 Hz
- DC Resistance (Re) 6.19
- Coil Inductance (Le) 4.78 mH
- Mechanical Q (Qms) 10.38
- Electromagnetic Q (Qes) 0.36
- Total Q (Qts) 0.35
- Compliance Equivalent Volume (Vas) 237.9 liters / 8.4 cu. ft.
- Peak Diaphragm Displacement Volume 939 cc
- Mechanical Compliance of Suspension (Cms) 0.12 mm/N
- BL Product (BL) 27.0
- Diaphragm Mass inc. Airload (Mms) 211 grams
- Efficiency Bandwidth Product (EBP) 89
- Maximum Linear Excursion (Xmax) 7.9 mm
- Surface Area of Cone (Sd) 1188.0 cm²
- Maximum Mechanical Limit (Xlim) 15.9 mm
MOUNTING Information - Recommended Enclosure Volume
Sealed N/A
Vented 125-210 - Overall Diameter 18",
- Baffle Hole Diameter 16.57",
- Front Sealing Gasket fitted as standard
- Rear Sealing Gasket fitted as standard
- Mounting Holes Diameter 0.28", 7 mm
- Mounting Holes B.C.D. 17.25", 438.2 mm
- Depth 8.13", 206.4 mm
MATERIALS of Construction - Copper voice coil
- Polyimide former
- Ferrite magnet
- Undercut with copper shorting ring and Core Periphery Ventilation
- Die-cast aluminum basket
- Acrylic Wetlook Paper Cone
- Cloth cone edge
- Acrylic wetlook paper dust cap
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Data sheet - EDM4018LFA [452,2 KB]
