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DELTA-15LFA
SPECIFICATION
Nominal Basket Diameter 15", 381mm
Nominal Impedance* 8 ohms
Power Rating
Watts 500W
Music Program 1000W
Resonance 39Hz
Usable Frequency Range 42Hz-3.2kHz
Sensitivity*** 96
Magnet Weight 56 oz.
Gap Height 0.375", 9.53mm
Voice Coil Diameter 2.5", 63.5mm

THIELE & SMALL PARAMETERS
Resonant Frequency (fs) 39Hz
DC Resistance (Re) 6.11
Coil Inductance (Le) 1.37mH
Mechanical Q (Qms) 6.3
Electromagnetic Q (Qes) 0.52
Total Q (Qts) 0.48
Compliance Equivalent Volume (Vas) 241.0 liters / 8.51 cu.ft.
Peak Diaphragm Displacement Volume (Vd) 419cc
Mechanical Compliance of Suspension (Cms) 0.23mm/N
BL Product (BL) 14.6 T-M
Diaphram Mass inc. Airload (Mms) 75 grams
Efficiency Bandwidth Product (EBP) 75
Maximum Linear Excursion (Xmax) 4.8mm
Surface Area of Cone (Sd) 873.0 cm2
Maximum Mechanical Limit (Xlim) 16.5mm

MOUNTING INFORMATION
Recommended Enclosure
Sealed 36.8-42.5 liters/1.3-1.5 cu.ft.
Vented 85-167 liters/3-5.9 cu.ft.
Overall Diameter 15.15", 384.8mm
Baffle Hole Diameter 13.77", 349.6mm
Front Sealing Gasket Fitted as standard
Rear Sealing Gasket Fitted as standard
Mounting Holes Diameter 0.25", 6.4mm
Mounting Holes B.C. D. 14.56", 369.9mm
Depth 6.3", 160mm
Net Weight 12.8 lbs., 5.8 kg
Shipping Weight 14.8 lbs., 6.7 kg

MATERIALS OF CONSTRUCTION
Coil Construction Copper voice coil
Coil Former Polyimide former
Magnet Composition Ferrite magnet
Core Details Vented and extended core
Basket Materials Pressed steel basket
Cone Composition Paper Cone
Cone Edge Composition Cloth cone edge
Dustcap Composition Solid composition paper dust cap