DELTA-12LFA 12" American Standard Series Speaker

Low frequency woofer for pro audio mid-bass or floor monitor applications in a sealed enclosure. Also suitable as a woofer in vented, bass guitar or PA enclosures in vented, bass guitar or PA enclosures.

SPECIFICATION
Nominal Basket Diameter	12", 305 mm
Nominal Impedance*	8 Ω
Power Rating*
Program Power	1000 W
Watts	500 W
Resonance	51 Hz
Usable Frequency Range	44 Hz - 3 kHz
Sensitivity*	94.6 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)	51 Hz
DC Resistance (Re)	6.06 Ω
Coil Inductance (Le)	1.45m H
Mechanical Q (Qms)	7.28
Electromagnetic Q (Qes)	0.51
Total Q (Qts)	0.47
Compliance Equivalent Volume (Vas)	67.9 liters / 2.4 cu.ft.
Peak Diaphragm Displacement Volume (Vd)	243 cc
Mechanical Compliance of Suspension (Cms)	0.19 mm/N
BL Product (BL)	14.1 T-M
Diaphragm Mass Inc. Airload (MMs)	51 grams
Efficiency Bandwidth Product (EBP)	100
Maximum Linear Excursion (Xmax)	4.8 mm
Surface Area of Cone (Sd)	506.7 cm2
Maximum Mechanical Limit (Xlim)	13.5 mm
MOUNTING INFORMATION
Recommended Enclosure Volume
Sealed	19.8-28 liters / 0.7-1 cu.ft.
Vented	25.5-102 liters / 0.9-3.6 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	11.8 lbs, 5.35 kg
Shipping Weight	14 lbs, 6.35 kgs
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
Dust Cap Composition	Solid composition paper dust cap