The Delta Pro 12-450 is a lighter weight version of the Delta Pro 12. Recommended as a woofer or mid/bass in vented enclosures. Also makes a perfect replacement in many portable PA cabinets.

SPECIFICATION
Nominal Basket Diameter	12", 305 mm
Nominal Impedance*	4 Ω
Power Rating*
Program Power	900 W
Watts	450 W
Resonance	45 Hz
Usable Frequency Range	45 Hz - 3.8 kHz
Sensitivity*	97.4 dB
Magnet Weight	56 oz.
Gap Height	0.3125", 7.9 mm
Voice Coil Diameter	2.5", 64 mm
THIELE & SMALL PARAMETERS
Resonant Frequency (fs)	45 Hz
DC Resistance (Re)	3.65 Ω
Coil Inductance (Le)	0.45m H
Mechanical Q (Qms)	7.97
Electromagnetic Q (Qes)	0.41
Total Q (Qts)	0.39
Compliance Equivalent Volume (Vas)	137.73 liters / 4.86 cu.ft.
Peak Diaphragm Displacement Volume (Vd)	271.5 cc
Mechanical Compliance of Suspension (Cms)	0.35 mm/N
BL Product (BL)	9.51 T-M
Diaphragm Mass Inc. Airload (MMs)	36 grams
Efficiency Bandwidth Product (EBP)	110
Maximum Linear Excursion (Xmax)	5.2 mm
Surface Area of Cone (Sd)	532.4 cm2
Maximum Mechanical Limit (Xlim)	13.7 mm
MOUNTING INFORMATION
Recommended Enclosure Volume
Sealed	N/a
Vented	33.97-99.1 liters / 1.2-3.5 cu.ft.
Driver Volume Displaced	0.079 cu.ft. / 2.25 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.	11.57", 293.9mm
Depth	5.5", 139.7 mm
Net Weight	11.7 lbs, 5.31 kg
Shipping Weight	14 lbs, 6.35 kgs
MATERIALS OF CONSTRUCTION
Coil Construction	Aluminium 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	Paper dust cap

Eminence DELTA PRO 12-450-4 12" 450 Watts

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