BETA-15A 15" American Standard Series Speaker

Recommended for professional audio as a woofer in sealed and vented enclosures.

SPECIFICATION
Nominal Basket Diameter	15", 381 mm
Nominal Impedance*	8 Ω
Power Rating*
Program Power	600 W
Watts	300 W
Resonance	35 Hz
Usable Frequency Range	45 Hz - 3.7 kHz
Sensitivity*	98.2 dB
Magnet Weight	34 oz.
Gap Height	0.312", 7.9 mm
Voice Coil Diameter	2", 51 mm
THIELE & SMALL PARAMETERS
Resonant Frequency (fs)	35 Hz
DC Resistance (Re)	6.32 Ω
Coil Inductance (Le)	1.1m H
Mechanical Q (Qms)	8.1
Electromagnetic Q (Qes)	0.63
Total Q (Qts)	0.58
Compliance Equivalent Volume (Vas)	334.6 liters / 11.82 cu.ft.
Peak Diaphragm Displacement Volume (Vd)	330 cc
Mechanical Compliance of Suspension (Cms)	0.35 mm/N
BL Product (BL)	11.5 T-M
Diaphragm Mass Inc. Airload (MMs)	60 grams
Efficiency Bandwidth Product (EBP)	56
Maximum Linear Excursion (Xmax)	4 mm
Surface Area of Cone (Sd)	823.7 cm2
Maximum Mechanical Limit (Xlim)	11.6 mm
MOUNTING INFORMATION
Recommended Enclosure Volume
Sealed	45-62 liters / 1.6-2.2 cu.ft.
Vented	99-175.6 liters / 3.5-6.2 cu.ft.
Driver Volume Displaced	0.118 cu.ft. / 3.33 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	8.8 lbs, 3.99 kg
Shipping Weight	10.8 lbs, 4.9 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