Eminence Delta Pro 12A

12" 400 Watt

Recommended for pro audio in a sealed midrange, vented mid-bass, and bass enclosure.

SPECIFICATION
Nominal Basket Diameter	12", 305 mm
Nominal Impedance*	8 Ω
Power Rating*
Program Power	800 W
Watts	400 W
Resonance	51 Hz
Usable Frequency Range	52 Hz - 4.5 kHz
Sensitivity*	99.2 dB
Magnet Weight	80 oz.
Gap Height	0.37", 9.5 mm
Voice Coil Diameter	2.5", 64 mm
THIELE & SMALL PARAMETERS
Resonant Frequency (fs)	51 Hz
DC Resistance (Re)	5.71 Ω
Coil Inductance (Le)	0.84m H
Mechanical Q (Qms)	7.56
Electromagnetic Q (Qes)	0.37
Total Q (Qts)	0.35
Compliance Equivalent Volume (Vas)	81.7 liters / 2.89 cu.ft.
Peak Diaphragm Displacement Volume (Vd)	242 cc
Mechanical Compliance of Suspension (Cms)	0.21 mm/N
BL Product (BL)	15.3 T-M
Diaphragm Mass Inc. Airload (MMs)	48 grams
Efficiency Bandwidth Product (EBP)	138
Maximum Linear Excursion (Xmax)	4.6 mm
Surface Area of Cone (Sd)	532.4 cm2
Maximum Mechanical Limit (Xlim)	13.7 mm
MOUNTING INFORMATION
Recommended Enclosure Volume
Sealed	28-35 liters / 1-1.25 cu.ft.
Vented	31-91 liters / 1.1-3.2 cu.ft.
Driver Volume Displaced	0.09 cu.ft. / 2.55 liters
Overall Diameter	12.38", 314.5 mm
Baffle Hole Diameter	11.07", 281.2 mm
Front Sealing Gasket	Yes
Rear Sealing Gasket	Yes
Mounting Holes Diameter	0.27", 6.9mm
Mounting Holes B.C.D.	11.69", 296.9mm
Depth	6.22", 158 mm
Net Weight	16.3 lbs, 7.39 kg
Shipping Weight	18 lbs, 8.16 kgs
MATERIALS OF CONSTRUCTION
Coil Construction	Aluminum voice coil
Coil Former	Polyimide former
Magnet Composition	Ferrite magnet
Core Details	Vented and extended core

Basket Materials	Die-cast aluminum basket
Cone Composition	Paper cone
Cone Edge Composition	Cloth cone edge
Dust Cap Composition	Solid composition paper dust cap

Eminence Delta Pro 12A - 12" 400 Watt

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