Recommended for professional
audio as a mid-bass or vocal wedge
in a sealed enclosure. Also suitable
as a mid-bass or woofer in vented
enclosures.
SPECIFICATION :
Nominal Basket Diameter 15" , 381 mm
Nominal Impedance* 8 ©
Power Rating* *
Watts 400 W
Music Program 800 W
Resonance 40 Hz
Usable Frequency Range 48 Hz - 4 kHz
Sensitivity* * * 100 dB
Magnet Weight 56 oz.
Gap Height 0.375" , 9.5 mm
Voice Coil Diameter 2.5" , 64 mm
EMINENCE DELTA 15A
THIELE & SMALL PARAMETERS :
Resonant Frequency ( fs) 40 Hz
DC Resistance ( Re) 6.3 ©
Coil Inductance ( Le) 0.64m H
Mechanical Q ( Qms) 8.05
Electromagnetic Q ( Qes) 0.57
Total Q ( Qts) 0.53
Compliance Equivalent Volume ( Vas) 270.7 liters / 9.56 cu.ft.
Peak Diaphragm Displacement Volume ( Vd) 233 cc
Mechanical Compliance of Suspension ( Cms) 0.26 mm/ N
BL Product ( BL) 13.2 T-M
Diaphragm Mass Inc. Airload ( MMs) 62 grams
Efficiency Bandwidth Product ( EBP) 70
Maximum Linear Excursion ( Xmax) 2.7 mm
Surface Area of Cone ( Sd) 864.6 cm2
Maximum Mechanical Limit ( Xlim) 11.1 mm
MOUNTING INFORMATION :
Recommended Enclosure Volume
Sealed 37-42.5 liters / 1.3-1.5 cu.ft.
Vented 82-161.4 liters / 2.9-5.7 cu.ft.
Driver Volume Displaced 0.128 cu.ft. / 3.62 liters
Overall Diameter 15.15" , 384.8 mm
Baffle Hole Diameter 13.87" , 352.3 mm
Front Sealing Gasket Yes
Rear Sealing Gasket Yes
Mounting Holes Diameter 0.25" , 6.4mm
Mounting Holes B.C.D. 14.56" , 369.8mm
Depth 6.05" , 153.7 mm
Net Weight 12.3 lbs, 5.58 kg
Shipping Weight 14.4 lbs, 6.53 kgs
MATERIALS OF CONSTRUCTION :
Coil Construction Aluminum voice coil
Coil Former Polyimide former
Magnet Composition Ferrite magnet
Core Details Vented core
Basket Materials Pressed steel basket
Cone Composition Paper cone
Cone Edge Composition Cloth cone edge
Dust Cap Composition Solid composition paper dust cap