DELTA 12B 12" American Standard Series Speaker | 16-Ohms

Recommended for professional audio as a mid-bass or woofer (with high-pass filter) in vented enclosures.

SPECIFICATION
Nominal Basket Diameter	12", 305 mm
Nominal Impedance*	16 Ω
Power Rating*
Program Power	800 W
Watts	400 W
Resonance	58 Hz
Usable Frequency Range	65 Hz - 5 kHz
Sensitivity*	98.3 dB
Magnet Weight	56 oz.
Gap Height	0.375", 9.5 mm
Voice Coil Diameter	2.5", 64 mm
THIELE & SMALL PARAMETERS
Resonant Frequency (fs)	58 Hz
DC Resistance (Re)	11.4 Ω
Coil Inductance (Le)	0.77m H
Mechanical Q (Qms)	7.04
Electromagnetic Q (Qes)	0.52
Total Q (Qts)	0.48
Compliance Equivalent Volume (Vas)	87 liters / 3.07 cu.ft.
Peak Diaphragm Displacement Volume (Vd)	140 cc
Mechanical Compliance of Suspension (Cms)	0.23 mm/N
BL Product (BL)	16 T-M
Diaphragm Mass Inc. Airload (MMs)	32 grams
Efficiency Bandwidth Product (EBP)	112
Maximum Linear Excursion (Xmax)	2.7 mm
Surface Area of Cone (Sd)	519.5 cm2
Maximum Mechanical Limit (Xlim)	9 mm
MOUNTING INFORMATION
Recommended Enclosure Volume
Sealed	15.6-18.4 liters / 0.55-0.65 cu.ft.
Vented	34-68 liters / 1.2-2.4 cu.ft.
Driver Volume Displaced	0.079 cu.ft. / 2.25 liters
Overall Diameter	12.03", 305.6 mm
Baffle Hole Diameter	11.07", 281.2 mm
Front Sealing Gasket	Yes
Rear Sealing Gasket	Yes
Mounting Holes Diameter	0.25", 6.4mm
Mounting Holes B.C.D.	11.59", 294.4mm
Depth	5.35", 135.9 mm
Net Weight	11.4 lbs, 5.17 kg
Shipping Weight	13.5 lbs, 6.12 kgs
MATERIALS OF CONSTRUCTION
Coil Construction	Copper 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 felt dust cap